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A single-family home meets the Indoor Environmental Quality Credit Prerequisite, Ventilation using a continuous exhaust strategy. Which of the following Indoor Environmental Quality credits are potential credit synergies?
Radon Control
Contaminant Control
Enhanced Combustion Venting
Enhanced Ventilation
TheLEED for Homes Rating System (v4)requires theIndoor Environmental Quality (EQ) Prerequisite: Ventilation, which can be met using a continuous exhaust strategy to provide adequate outdoor air. Certain EQ credits have synergies with this prerequisite, enhancing ventilation performance or indoor air quality.
According to theLEED Reference Guide for Homes Design and Construction (v4):
EQ Credit: Enhanced Ventilation (1–3 points)
Projects that meet the ventilation prerequisite using a continuous exhaust strategy can pursue the Enhanced Ventilation credit by providing additional outdoor air, improving air distribution, or installing advanced filtration systems. This credit builds on the prerequisite by optimizing ventilation performance.
Source: LEED Reference Guide for Homes Design and Construction, v4, Indoor Environmental Quality Credit: Enhanced Ventilation, p. 146.
TheLEED v4.1 Residential BD+Crating system confirms:
EQ Credit: Enhanced Ventilation
This credit synergizes with the ventilation prerequisite by offering points for exceeding minimum ventilation requirements, such as increasing outdoor air rates or using high-efficiency filters in continuous exhaust systems.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
TheEnhanced Ventilationcredit (Option D) is a direct synergy with the continuous exhaust strategy, as it builds on the prerequisite by improving ventilation rates, distribution, or filtration.
Why not the other options?
Which of the following credits awards exemplary performance?
Materials and Resources Credit, Durability Management Verification
Location and Transportation Credit, Compact Development
Sustainable Sites Credit, Heat Island Reduction
Energy and Atmosphere Credit, Envelope Insulation
TheLEED for Homes Rating System (v4)allows certain credits to award exemplary performance points under theInnovation (IN) Credit: Innovationfor exceeding standard credit thresholds, promoting exceptional sustainability achievements.
According to theLEED Reference Guide for Homes Design and Construction (v4):
IN Credit: Innovation (1–5 points)
Exemplary performance points are awarded for achieving significantly higher thresholds than required for specific credits. ForLocation and Transportation Credit: Compact Development, exemplary performance is awarded for exceeding the maximum density or proximity requirements (e.g., higher dwelling units per acre or closer proximity to services).
Source: LEED Reference Guide for Homes Design and Construction, v4, Innovation Credit: Innovation, p. 190; Location and Transportation Credit: Compact Development, p. 57.
TheLEED v4.1 Residential BD+Crating system confirms:
IN Credit: Innovation
Exemplary performance is available for credits likeLT Credit: Compact Developmentwhen projects achieve significantly higher densities or connectivity than the standard credit requirements.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer isLocation and Transportation Credit, Compact Development(Option B), as it is explicitly identified as offering exemplary performance points for surpassing density or connectivity thresholds.
Why not the other options?
The minimum required outdoor air ventilation is calculated based on the conditioned floor area of the home and the:
Volume of the home
Number of bedrooms
Number of bathrooms
Number of full-time occupants
TheLEED for Homes Rating System (v4)addresses minimum outdoor air ventilation in theIndoor Environmental Quality (EQ) Prerequisite: Ventilation, usingASHRAE Standard 62.2-2010to determine ventilation rates based on conditioned floor area and the number of bedrooms.
According to theLEED Reference Guide for Homes Design and Construction (v4):
EQ Prerequisite: Ventilation
Meet the minimum outdoor air ventilation requirements of ASHRAE Standard 62.2-2010, which calculates ventilation rates based on the conditioned floor area of the home and the number of bedrooms (as a proxy for occupancy). The formula is: Ventilation rate (cfm) = 0.01 × floor area (ft²) + 7.5 × (number of bedrooms + 1).
Source: LEED Reference Guide for Homes Design and Construction, v4, Indoor Environmental Quality Prerequisite: Ventilation, p. 142.
TheLEED v4.1 Residential BD+Crating system confirms:
EQ Prerequisite: Ventilation
Ventilation rates are determined using ASHRAE 62.2-2010, based on conditioned floor area and the number of bedrooms, which accounts for typical occupancy levels.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer isnumber of bedrooms(Option B), as ASHRAE 62.2-2010 uses this alongside conditioned floor area to calculate ventilation requirements.
Why not the other options?
In order for a LEED home to earn a point for Materials and Resources Credit, Environmentally Preferable Products, what minimum amount of insulation must be reclaimed or salvaged?
70%
80%
90%
100%
TheLEED for Homes Rating System (v4)awards points for theMaterials and Resources (MR) Credit: Environmentally Preferable Productswhen materials, including insulation, meet sustainable criteria such as being reclaimed or salvaged. The credit calculates compliance based on the percentage of total material cost.
According to theLEED Reference Guide for Homes Design and Construction (v4):
MR Credit: Environmentally Preferable Products (1–4 points)
Use products that meet one or more of the following criteria for at least 25% (1 point), 50% (2 points), or 90% (3–4 points) by cost of the total materials:
Reused or salvaged materials, such as reclaimed insulation.For specific material categories like insulation, at least 90% of the insulation (by cost) must be reclaimed, salvaged, or meet other environmentally preferable criteria to contribute significantly to the credit.Source: LEED Reference Guide for Homes Design and Construction, v4, Materials and Resources Credit: Environmentally Preferable Products, p. 160–161.
TheLEED v4.1 Residential BD+Crating system confirms:
MR Credit: Environmentally Preferable Products
To earn points, insulation must meet environmentally preferable criteria (e.g., 90% reclaimed or salvaged by cost) to contribute to the overall material cost percentage (25%, 50%, or 90%).
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
For insulation to contribute to earning a point under this credit, aminimum of 90%(by cost) must be reclaimed or salvaged (Option C), aligning with the credit’s threshold for significant material contributions.
Why not the other options?
What is the advantage of using native and adapted plant species instead of conventional turf?
Increased stormwater runoff
Decreased wildlife habitat
Decreased frequency of mowing
Increased use of potable water
TheLEED for Homes Rating System (v4)promotes the use of native and adapted plants in theWater Efficiency (WE) Credit: Outdoor Water UseandSustainable Sites (SS) Credit: Site Development – Protect or Restore Habitatto reduce maintenance and environmental impacts compared to conventional turf.
According to theLEED Reference Guide for Homes Design and Construction (v4):
WE Credit: Outdoor Water Use (1–4 points)
Native and adapted plant species require less maintenance, including decreased frequency of mowing, compared to conventional turf grass, which often needs frequent cutting to maintain appearance.
Source: LEED Reference Guide for Homes Design and Construction, v4, Water Efficiency Credit: Outdoor Water Use, p. 98.
TheLEED v4.1 Residential BD+Crating system confirms:
WE Credit: Outdoor Water Use
Using native and adapted plants reduces maintenance demands, such as mowing frequency, compared to turf grass, while also lowering irrigation needs.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer isdecreased frequency of mowing(Option C), as native and adapted plants typically require less frequent maintenance than turf grass.
Why not the other options?
Points can be earned for Energy and Atmosphere Credit: Efficient Hot Water Distribution System, Option 1 through which of the following measures?
Limiting branch line length
Installing central manifold distribution
Installing demand-controlled recirculation
Insulating all domestic hot water piping to R-4
TheLEED for Homes Rating System (v4)includes theEnergy and Atmosphere (EA) Credit: Efficient Hot Water Distribution System, which aims to reduce energy and water waste in hot water delivery.Option 1: Length of Pipingfocuses on minimizing the length of hot water piping to reduce heat loss and delivery time.
According to theLEED Reference Guide for Homes Design and Construction (v4):
EA Credit: Efficient Hot Water Distribution System, Option 1. Length of Piping (1–2 points)
Design and install the hot water distribution system to meet one of the following requirements:
Maximum branch line length: The length of any branch line from the water heater or hot water source to any fixture must not exceed 20 feet (6 meters) for 1 point, or 10 feet (3 meters) for 2 points.This reduces the volume of water that must be purged before hot water reaches the fixture, saving energy and water.Source: LEED Reference Guide for Homes Design and Construction, v4, Energy and Atmosphere Credit: Efficient Hot Water Distribution System, p. 132.
TheLEED v4.1 Residential BD+Crating system maintains this requirement:
EA Credit: Efficient Hot Water Distribution
Option 1: Limit the length of branch lines from the water heater to fixtures to 20 feet (6 meters) for 1 point or 10 feet (3 meters) for 2 points.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
Limiting branch line length(Option A) directly aligns with Option 1 of this credit, as it reduces the distance hot water must travel, minimizing heat loss and water waste.
Why not the other options?
Looking at the attached table, a project team is aiming for three points in Water Efficiency Credit, Outdoor Water Use. The site contains a total of 57,500 ft² (5,342 m²) of softscape. If the plan has 8,000 ft² (743 m²) of turf grass, what is the minimum area of native or adapted landscape required to achieve the desired three points for this credit?
Turf grass area
Native or adapted plant area
Points
< 60%
> 25%
1
< 40%
> 50%
2
< 20%
> 75%
3
< 5%
> 75%
4
38,967 ft² (3,620 m²) of native or adapted plant area
39,355 ft² (3,656 m²) of native or adapted plant area
43,126 ft² (4,007 m²) of native or adapted plant area
2,784 ft² (259 m²) of native or adapted plant area
TheLEED for Homes Rating System (v4)includes theWater Efficiency (WE) Credit: Outdoor Water Use, which awards points based on the ratio of turf grass (high water use) to native or adapted plants (low water use) in the softscape to reduce irrigation needs.
According to theLEED Reference Guide for Homes Design and Construction (v4):
WE Credit: Outdoor Water Use (1–4 points)
To achieve 3 points, the softscape must have less than 20% turf grass and more than 75% native or adapted plants, calculated by area.
Source: LEED Reference Guide for Homes Design and Construction, v4, Water Efficiency Credit: Outdoor Water Use, p. 98–99.
TheLEED v4.1 Residential BD+Crating system confirms:
WE Credit: Outdoor Water Use
For 3 points, the turf grass area must be less than 20% of the total softscape, and the native or adapted plant area must exceed 75%.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
Calculation:
Total softscape area: 57,500 ft² (5,342 m²).
Turf grass area: 8,000 ft² (743 m²).
Turf grass percentage: (8,000 ÷ 57,500) × 100 = 13.91% (< 20%, meets requirement).
Minimum native or adapted plant area for 3 points: > 75% of 57,500 ft² = 0.75 × 57,500 =43,125 ft².
Compare options:
A. 38,967 ft² (3,620 m²): 38,967 ÷ 57,500 = 67.77% (< 75%, does not meet).
B. 39,355 ft² (3,656 m²): 39,355 ÷ 57,500 = 68.44% (< 75%, does not meet).
C. 43,126 ft² (4,007 m²): 43,126 ÷ 57,500 = 75.00% (meets > 75% requirement).
D. 2,784 ft² (259 m²): 2,784 ÷ 57,500 = 4.84% (far below 75%, does not meet).
The correct answer is43,126 ft² (4,007 m²) of native or adapted plant area(Option C), as it meets the minimum requirement for 3 points.
TheLEED AP Homes Candidate Handbookemphasizes WE credits, including outdoor water use, and references theLEED Reference Guide for Homes Design and Constructionas a key resource. The exam is based onLEED v4, ensuring the relevance of the table’s criteria.
If the roof sheathing of a home is constructed of certified lumber approved for LEED, under what circumstances can points be earned?
If the certified content is greater than 45%
If the certified content is greater than 90%
If the certified wood is sourced from a 600 mi. (966 km) radius
No points are earned because certified lumber is a prerequisite
TheLEED for Homes Rating System (v4)awards points for theMaterials and Resources (MR) Credit: Environmentally Preferable Productswhen using certified lumber, specifically Forest Stewardship Council (FSC)-certified wood, which contributes to the required percentage of material cost.
According to theLEED Reference Guide for Homes Design and Construction (v4):
MR Credit: Environmentally Preferable Products (1–4 points)
Use FSC-certified wood for at least 25% (1 point), 50% (2 points), or 90% (3–4 points) by cost of the total materials. For specific material categories like roof sheathing, at least 90% of the component (by cost) must be FSC-certified to significantly contribute to the credit.
Source: LEED Reference Guide for Homes Design and Construction, v4, Materials and Resources Credit: Environmentally Preferable Products, p. 160–161.
TheLEED v4.1 Residential BD+Crating system confirms:
MR Credit: Environmentally Preferable Products
Points are awarded for FSC-certified lumber if it constitutes at least 90% of a specific component like roof sheathing (by cost) to meet higher point thresholds (e.g., 3–4 points). Certified lumber is not a prerequisite; it contributes to the credit.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer isif the certified content is greater than 90%(Option B), as this ensures the roof sheathing significantly contributes to the credit’s material cost threshold for points.
Why not the other options?
Introduction of outdoor air works to improve indoor air quality by:
Dilution
Source control
Pressurization
Source removal
TheLEED for Homes Rating System (v4)addresses indoor air quality in theIndoor Environmental Quality (EQ) Prerequisite: VentilationandEQ Credit: Enhanced Ventilation, which require outdoor air to improve indoor air quality by reducing pollutant concentrations.
According to theLEED Reference Guide for Homes Design and Construction (v4):
EQ Prerequisite: Ventilation
Introduce outdoor air to dilute indoor pollutants, improving air quality by reducing the concentration of contaminants such as volatile organic compounds (VOCs) and carbon dioxide.
Source: LEED Reference Guide for Homes Design and Construction, v4, Indoor Environmental Quality Prerequisite: Ventilation, p. 142.
TheLEED v4.1 Residential BD+Crating system confirms:
EQ Prerequisite: Ventilation
Outdoor air ventilation dilutes indoor pollutants, ensuring a healthier indoor environment by lowering contaminant levels.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The introduction of outdoor air improves indoor air quality primarily throughdilution(Option A), as it mixes with indoor air to reduce pollutant concentrations.
Why not the other options?
An existing home in a gut rehab LEED for Homes project reclaims all of the original framing. An addition is built with 90% FSC-certified wood. Which credit, if any, under Materials and Resources, will be earned?
Construction Waste Management
No credit will be awarded
Material-Efficient Framing
Environmentally Preferable Products
TheLEED for Homes Rating System (v4)includes several credits under theMaterials and Resources (MR)category that encourage sustainable material use, including reclaimed materials and certified wood. The scenario describes a gut rehab project that reclaims all original framing and builds an addition with 90% FSC-certified wood. We need to determine which MR credit applies.
According to theLEED Reference Guide for Homes Design and Construction (v4), theMR Credit: Environmentally Preferable Productsrewards the use of materials that have environmentally beneficial attributes, such as reclaimed materials and FSC (Forest Stewardship Council)-certified wood:
MR Credit: Environmentally Preferable Products (1–4 points)
Use products that meet one or more of the following criteria for at least 25%, 50%, or 90% (by cost) of the total materials in the project:
Reused or salvaged materials: Materials that are reclaimed from the same or another project.
FSC-certified wood: Wood products certified by the Forest Stewardship Council for sustainable forestry practices.For gut rehab projects, reclaimed framing materials and FSC-certified wood in additions contribute to the percentage of environmentally preferable products.Source: LEED Reference Guide for Homes Design and Construction, v4, Materials and Resources Credit: Environmentally Preferable Products, p. 160.
In this case:
Reclaimed framing: The gut rehab reclaims 100% of the original framing, which qualifies as reused or salvaged materials under the credit.
FSC-certified wood: The addition uses 90% FSC-certified wood, which also qualifies as an environmentally preferable product.
TheLEED v4.1 Residential BD+Crating system aligns with this approach:
MR Credit: Environmentally Preferable Products
Projects earn points by using products that are salvaged, recycled, or FSC-certified for at least 25%, 50%, or 90% of the material cost. For renovations, salvaged framing and certified wood in additions are eligible.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
Since the project uses both reclaimed framing (100% of the original) and 90% FSC-certified wood in the addition, it meets the criteria forEnvironmentally Preferable Products, provided the combined material cost meets the 25%, 50%, or 90% thresholds. The high percentage of FSC-certified wood and full reclamation of framing make it likely to achieve at least one point.
Why not the other options?
Energy simu-lation software used for ENERGY STAR Homes certification is approved by the:
Department of Energy (DOE)
U.S. Green Building Council (USGBC)
Environmental Protection Agency (EPA)
Residential Energy Services Network (RESNET)
TheLEED for Homes Rating System (v4)integrates ENERGY STAR Homes certification as part of theEnergy and Atmosphere (EA)category, specifically for theEA Prerequisite: Minimum Energy PerformanceandEA Credit: Annual Energy Use. ENERGY STAR Homes certification requires energy simulation software to model the home’s performance, and this software must be approved by a specific authority.
According to theLEED Reference Guide for Homes Design and Construction (v4):
EA Prerequisite: Minimum Energy Performance
Projects pursuing ENERGY STAR for Homes certification must use energy simulation software accredited by the Residential Energy Services Network (RESNET) to demonstrate compliance with ENERGY STAR performance requirements.
Source: LEED Reference Guide for Homes Design and Construction, v4, Energy and Atmosphere Prerequisite: Minimum Energy Performance, p. 112.
TheResidential Energy Services Network (RESNET)is the organization responsible for accrediting energy modeling software used for ENERGY STAR Homes certification, such as REM/Rate or Ekotrope. RESNET establishes standards for Home Energy Rating Systems (HERS) and ensures software accuracy for energy performance calculations.
TheLEED v4.1 Residential BD+Crating system aligns with this:
EA Prerequisite: Energy Performance
ENERGY STAR Homes certification requires the use of RESNET-accredited energy modeling tools to verify performance targets, such as HERS index scores.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
While theEnvironmental Protection Agency (EPA)oversees the ENERGY STAR program, it does not directly approve the simulation software; that responsibility lies with RESNET.
Why not the other options?
A project team for a home in a small town is pursuing LEED certification. The home is designed with the following site characteristics:
• The lot is square.
• Three sides of the square lot border undeveloped land.
• The previous home covering 78% of the lot is deconstructed and the new LEED home will be built in its place.
• One full side of the square lot borders a home that was built 10 years before the LEED project.
Compliance with which of the following options, if any, will qualify the home for Location and Transportation Credit, Site Selection?
Infill only
Previously Developed only
Infill and Previously Developed
None, this home does not comply with Location and Transportation Credit, Site Selection
TheLEED for Homes Rating System (v4)includes theLocation and Transportation (LT) Credit: Site Selection, which awards points for building on infill or previously developed sites to minimize environmental impact.
According to theLEED Reference Guide for Homes Design and Construction (v4):
LT Credit: Site Selection (1–3 points)
Option 1: Infill: At least 75% of the lot’s perimeter must border previously developed parcels (e.g., existing buildings or infrastructure).
Option 2: Previously Developed: The lot must have been previously altered by construction (e.g., a prior home covering a significant portion of the site) before the LEED project.A site with a previous home covering 78% of the lot qualifies as previously developed, but if only one side (25% of a square lot’s perimeter) borders a developed parcel, it does not meet the infill requirement.Source: LEED Reference Guide for Homes Design and Construction, v4, Location and Transportation Credit: Site Selection, p. 54.
TheLEED v4.1 Residential BD+Crating system confirms:
LT Credit: Site Selection
A site qualifies forOption 2: Previously Developedif it was previously altered (e.g., a home covering 78% of the lot). Infill requires 75% of the perimeter to border developed land, which a square lot with only one developed side (25%) does not meet.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
Evaluation:
Infill: The lot is square, with one side (25% of the perimeter) bordering a developed home. This does not meet the 75% perimeter requirement for infill.
Previously Developed: The previous home covered 78% of the lot, qualifying it as previously developed.
The correct answer isPreviously Developed only(Option B), as the site meets the criteria for Option 2 but not Option 1.
Why not the other options?
A. Infill only: The site does not meet the 75% perimeter requirement for infill (only 25% borders developed land).
C. Infill and Previously Developed: The site does not qualify for infill, so it cannot meet both options.
Of the following recommended strategies, which will receive credit under Sustainable Sites: Nontoxic Pest Control?
Seal all external cracks, joints, penetrations, edges, and entry points with caulking
Install plantings and landscaping elements that repel pests and encourage biodiversity
Use a sealed-to-the-wall vapor barrier for homes with crawl spaces on the floor or beneath a concrete slab
Design and install plastic barrier systems around pipes and electrical conduit extending through slab foundations
TheLEED for Homes Rating System (v4)includes theSustainable Sites (SS) Credit: Nontoxic Pest Control, which awards points for strategies that prevent pest entry without relying on toxic chemicals.
According to theLEED Reference Guide for Homes Design and Construction (v4):
SS Credit: Nontoxic Pest Control (1 point)
Implement physical barriers to prevent pest entry, such as sealing all external cracks, joints, penetrations, edges, and entry points with caulking or other durable materials to reduce the need for chemical pest control.
Source: LEED Reference Guide for Homes Design and Construction, v4, Sustainable Sites Credit: Nontoxic Pest Control, p. 82.
TheLEED v4.1 Residential BD+Crating system confirms:
SS Credit: Nontoxic Pest Control
Sealing external cracks, joints, and penetrations with caulking is a primary strategy to earn points by preventing pest access in a nontoxic manner.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer isseal all external cracks, joints, penetrations, edges, and entry points with caulking(Option A), as this is a direct, physical pest control strategy recognized by the credit.
Why not the other options?
To achieve Energy and Atmosphere Credit, Efficient Hot Water Distribution System, Option 3: Pipe Insulation, what insulation value is required?
R-2
R-3
R-4
R-10
TheLEED for Homes Rating System (v4)includes theEnergy and Atmosphere (EA) Credit: Efficient Hot Water Distribution System, Option 3: Pipe Insulation, which awards points for insulating hot water pipes to reduce heat loss and improve energy efficiency.
According to theLEED Reference Guide for Homes Design and Construction (v4):
EA Credit: Efficient Hot Water Distribution System, Option 3: Pipe Insulation (1 point)
Insulate all hot water piping with a minimum insulation value of R-4 to reduce heat loss and improve the efficiency of the hot water distribution system.
Source: LEED Reference Guide for Homes Design and Construction, v4, Energy and Atmosphere Credit: Efficient Hot Water Distribution System, p. 133.
TheLEED v4.1 Residential BD+Crating system confirms:
EA Credit: Efficient Hot Water Distribution System, Option 3: Pipe Insulation
Hot water pipes must be insulated to at least R-4 to qualify for the credit, minimizing energy losses during water distribution.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer isR-4(Option C), as this is the minimum insulation value required for hot water piping to earn the credit.
Why not the other options?
A. R-2: This is below the required insulation value for the credit.
B. R-3: This is also below the required R-4 value.
Which of the following products will be eligible for points toward Materials and Resources Credit, Environmentally Preferable Products, Option 1: Local Production?
Granite slabs extracted in China and manufactured and installed in New York City
Wood studs harvested and manufactured in Western Canada and installed in California within a 750 mi. (1,200 km) radius
Wood studs harvested and manufactured in Mexico within a 98 mi. (158 km) radius of the final installation in New Mexico
Wooden doors manufactured in Oshkosh, Wisconsin, assembled 1,463 mi. (2,354 km) away in Provo, Utah, and installed 1,246 mi. (2,005 km) away in Austin, Texas
TheLEED for Homes Rating System (v4)awards points for theMaterials and Resources (MR) Credit: Environmentally Preferable Products, Option 1: Local Production, which encourages the use of materials sourced locally to reduce transportation impacts.
According to theLEED Reference Guide for Homes Design and Construction (v4):
MR Credit: Environmentally Preferable Products, Option 1: Local Production (1–4 points)
Use products that have been extracted, harvested, or recovered, as well as manufactured, within 100 miles (160 km) of the project site for at least 25%, 50%, or 90% (by cost) of the total materials.
Source: LEED Reference Guide for Homes Design and Construction, v4, Materials and Resources Credit: Environmentally Preferable Products, p. 160.
TheLEED v4.1 Residential BD+Crating system confirms:
MR Credit: Environmentally Preferable Products, Option 1: Local Production
Materials must be extracted, harvested, or recovered and manufactured within 100 miles (160 km) of the project site to qualify for local production points.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
Evaluation of options:
A. Granite slabs extracted in China and manufactured and installed in New York City: Extracted in China, far exceeding the 100-mile (160 km) limit, so it does not qualify.
B. Wood studs harvested and manufactured in Western Canada and installed in California within a 750 mi. (1,200 km) radius: The 750-mile radius exceeds the 100-mile limit, so it does not qualify.
C. Wood studs harvested and manufactured in Mexico within a 98 mi. (158 km) radius of the final installation in New Mexico: Both harvesting and manufacturing are within 100 miles (160 km), meeting the local production criteria.
D. Wooden doors manufactured in Oshkosh, Wisconsin, assembled 1,463 mi. (2,354 km) away in Provo, Utah, and installed 1,246 mi. (2,005 km) away in Austin, Texas: The distances for manufacturing and assembly far exceed the 100-mile limit, so it does not qualify.
The correct answer isOption C, as the wood studs meet the local production requirement of being harvested and manufactured within 100 miles (160 km) of the project site.
TheLEED AP Homes Candidate Handbookemphasizes MR credits, including Environmentally Preferable Products, and references theLEED Reference Guide for Homes Design and Constructionas a key resource. The exam is based onLEED v4, ensuring the relevance of the 100-mile radius.
During the walk-through with a new home occupant, which of the following is NOT required?
Identification of all installed equipment
Instruction in how to use the measures and operate the equipment
Information on how to maintain the equipment
Information related to product return policies and rebates
TheLEED for Homes Rating System (v4)requires a walk-through as part of theInnovation (IN) Prerequisite: Education of the Homeowner, Tenant, or Building Managerto educate occupants on the operation and maintenance of sustainable systems.
According to theLEED Reference Guide for Homes Design and Construction (v4):
IN Prerequisite: Education of the Homeowner, Tenant, or Building Manager
Conduct a minimum two-hour walk-through with the homeowner, including:
Identification of all installed equipment (e.g., HVAC, water heating systems).
Instruction on how to use and operate the equipment and green measures.
Information on how to maintain the equipment to ensure ongoing performance.Information on product return policies or rebates is not required.Source: LEED Reference Guide for Homes Design and Construction, v4, Innovation Prerequisite: Education of the Homeowner, Tenant, or Building Manager, p. 188.
TheLEED v4.1 Residential BD+Crating system confirms:
IN Prerequisite: Education of the Homeowner or Tenant
The walk-through must cover equipment identification, operation, and maintenance instructions, but does not include product return policies or rebates.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer isinformation related to product return policies and rebates(Option D), as this is not a required component of the walk-through.
Why not the other options?
A. Identification of all installed equipment: This is required to familiarize occupants with sustainable systems.
B. Instruction in how to use the measures and operate the equipment: This is required to ensure proper operation.
Which of the following could be done to receive credit under Sustainable Sites Credit, Nontoxic Pest Control?
Treat all material with a borate product
Install landscaping within 24 in. (0.6 m) of home
Use treated wood for all wood-to-concrete connections
Treat all wood framing with a borate product to a minimum of 3 ft. (0.9 m) below foundation
TheLEED for Homes Rating System (v4)includes theSustainable Sites (SS) Credit: Nontoxic Pest Control, which awards points for physical or nontoxic strategies to prevent pest entry, such as termites, without relying on chemical treatments unless specifically allowed.
According to theLEED Reference Guide for Homes Design and Construction (v4):
SS Credit: Nontoxic Pest Control (1 point)
Use treated wood (e.g., pressure-treated or borate-treated) for all wood-to-concrete connections to prevent termite damage in a way that minimizes environmental impact compared to broad chemical treatments. This is considered a nontoxic or low-toxicity strategy for pest control.
Source: LEED Reference Guide for Homes Design and Construction, v4, Sustainable Sites Credit: Nontoxic Pest Control, p. 82.
TheLEED v4.1 Residential BD+Crating system confirms:
SS Credit: Nontoxic Pest Control
Using treated wood for wood-to-concrete connections is an acceptable strategy to earn points by preventing pest access while minimizing chemical use.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via LEED Online.
The correct answer isuse treated wood for all wood-to-concrete connections(Option C), as this is a recognized nontoxic pest control strategy for the credit.
Why not the other options?
A project team is pursuing Water Efficiency Credit, Outdoor Water Use. The site contains a total of 57,500 ft² (5,342 m²) of softscape. What ratio of turf grass and native or adapted landscape is required to achieve four points for this credit? (Refer to the table below)
Turf grass area
Native or adapted plant area
Points
< 60%
> 25%
1
< 40%
> 50%
2
< 20%
> 75%
3
< 5%
> 75%
4
12,600 ft² (1,171 m²) turf grass and 40,000 ft² (3,716 m²) native or adapted landscape
11,500 ft² (1,068 m²) turf grass and 40,000 ft² (3,716 m²) native or adapted landscape
2,500 ft² (232 m²) turf grass and 44,000 ft² (4,088 m²) native or adapted landscape
4,500 ft² (418 m²) turf grass and 44,000 ft² (4,088 m²) native or adapted landscape
TheLEED for Homes Rating System (v4)includes theWater Efficiency (WE) Credit: Outdoor Water Use, which awards points based on the ratio of turf grass (high water use) to native or adapted plants (low water use) in the softscape to reduce irrigation needs.
According to theLEED Reference Guide for Homes Design and Construction (v4):
WE Credit: Outdoor Water Use (1–4 points)
Reduce outdoor water use by selecting native or adapted plants and limiting turf grass. Points are awarded based on the percentage of softscape area:
< 5% turf grass and > 75% native or adapted plants: 4 points.The total softscape area is used to calculate the percentages of turf grass and native/adapted plants.Source: LEED Reference Guide for Homes Design and Construction, v4, Water Efficiency Credit: Outdoor Water Use, p. 98–99.
TheLEED v4.1 Residential BD+Crating system confirms:
WE Credit: Outdoor Water Use
Achieve 4 points by ensuring less than 5% of the softscape is turf grass and more than 75% is native or adapted plants, based on area calculations.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
Calculation for 4 points:
Total softscape area: 57,500 ft².
For 4 points:
Turf grass: < 5% of 57,500 ft² = < 0.05 × 57,500 = < 2,875 ft².
Native or adapted plants: > 75% of 57,500 ft² = > 0.75 × 57,500 = > 43,125 ft².
Evaluate options:
A. 12,600 ft² turf grass and 40,000 ft² native or adapted:
Turf grass: 12,600 / 57,500 = 21.91% (> 5%).
Native: 40,000 / 57,500 = 69.57% (< 75%).
Does not meet 4-point criteria (only qualifies for 1 point: < 60% turf, > 25% native).
B. 11,500 ft² turf grass and 40,000 ft² native or adapted:
Turf grass: 11,500 / 57,500 = 20% (> 5%).
Native: 40,000 / 57,500 = 69.57% (< 75%).
Does not meet 4-point criteria (qualifies for 2 points: < 40% turf, > 50% native).
C. 2,500 ft² turf grass and 44,000 ft² native or adapted:
Turf grass: 2,500 / 57,500 = 4.35% (< 5%).
Native: 44,000 / 57,500 = 76.52% (> 75%).
Meets 4-point criteria.
D. 4,500 ft² turf grass and 44,000 ft² native or adapted:
Turf grass: 4,500 / 57,500 = 7.83% (> 5%).
Native: 44,000 / 57,500 = 76.52% (> 75%).
Does not meet 4-point criteria (qualifies for 3 points: < 20% turf, > 75% native).
Answer:Option C(2,500 ft² turf grass and 44,000 ft² native or adapted landscape) meets the requirements for 4 points.
TheLEED AP Homes Candidate Handbookemphasizes WE credits, including outdoor water use, and references theLEED Reference Guide for Homes Design and Constructionas a key resource. The exam is based onLEED v4, ensuring the relevance of the table’s criteria.
What are the benefits of rainwater harvesting in areas with substantial rainfall spikes?
Helps to offset air pollution
Helps to maintain required firewater levels
Keeps water out of storm sewers
Little-to-no benefit since precipitation is seasonal
TheLEED for Homes Rating System (v4)addresses rainwater harvesting in theSustainable Sites (SS) Credit: Rainwater Management, which aims to reduce runoff and manage stormwater on-site, particularly in areas with significant rainfall events.
According to theLEED Reference Guide for Homes Design and Construction (v4):
SS Credit: Rainwater Management (1–3 points)
Implement rainwater harvesting systems (e.g., rain barrels, cisterns) to capture and store rainwater, reducing runoff volume and keeping water out of storm sewers. This is particularly beneficial in areas with substantial rainfall spikes, as it mitigates flooding and reduces strain on municipal stormwater systems.
Source: LEED Reference Guide for Homes Design and Construction, v4, Sustainable Sites Credit: Rainwater Management, p. 76.
TheLEED v4.1 Residential BD+Crating system confirms:
SS Credit: Rainwater Management
Rainwater harvesting reduces runoff by capturing water on-site, preventing it from entering storm sewers, which is especially effective during heavy rainfall events.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer iskeeps water out of storm sewers(Option C), as rainwater harvesting captures runoff, reducing the burden on stormwater infrastructure, particularly in areas with seasonal or substantial rainfall spikes.
Why not the other options?
A project team targets concrete as a material to receive Environmentally Preferable Products credit for fly ash content. Due to weather conditions, the structural engineer suggests reducing the fly ash content in a small portion of the suspended slab areas to speed the curing process and achieve the required strength. The adjusted calculation shows that reduced fly ash in these areas will result in failure to achieve the targeted point. Which of the following is the most effective strategy that the LEED AP could pursue?
Submit a CIR requesting the low fly ash suspended slab be removed from the calculations
Ignore the engineer’s recommendation and proceed with the original design
Apply for a Regional Priority exemption since the local climate interfered with the project team’s best effort to achieve the point
Demand the project team slow the construction schedule so additional curing time will allow the required amount of fly ash to be used
TheLEED for Homes Rating System (v4)awards points for theMaterials and Resources (MR) Credit: Environmentally Preferable Productsbased on the use of materials with sustainable attributes, such as concrete with fly ash (a recycled material that reduces the environmental impact of cement production). The scenario indicates that reducing fly ash content in some suspended slab areas due to weather-related curing concerns would cause the project to fall short of the credit’s threshold (e.g., 25%, 50%, or 90% by cost).
According to theLEED Reference Guide for Homes Design and Construction (v4):
MR Credit: Environmentally Preferable Products (1–4 points)
Use products that meet one or more of the following criteria for at least 25%, 50%, or 90% (by cost) of the total materials in the project:
Recycled content: Materials with pre- or post-consumer recycled content, such as fly ash in concrete.The percentage is calculated based on the total cost of qualifying materials across the project.Source: LEED Reference Guide for Homes Design and Construction, v4, Materials and Resources Credit: Environmentally Preferable Products, p. 160.
TheLEED v4.1 Residential BD+Crating system confirms this:
MR Credit: Environmentally Preferable Products
Concrete with fly ash qualifies as an environmentally preferable product if it contributes to the required percentage of material cost. Project teams must ensure compliance across all relevant components.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The most effective strategy is toignore the engineer’s recommendation and proceed with the original design(Option B). This ensures the project maintains the intended fly ash content to meet the credit threshold. Fly ash typically slows concrete curing, but modern mix designs and admixtures (e.g., accelerators) can mitigate weather-related delays without reducing fly ash content. The LEED AP should collaborate with the structural engineer to explore alternative solutions, such as adjusting the mix or using curing blankets, to maintain both structural integrity and credit compliance.
Why not the other options?
Which of the following strategies contributes to achieving Sustainable Sites Credit, Rainwater Management?
Use drought-resistant vegetation in all planting areas
Direct rainwater runoff toward an appropriate permanent infiltration feature
Install a graywater collection system with filtration for irrigation and non-potable use
Provide filtration of the stormwater runoff before discharging into the city storm system
TheLEED for Homes Rating System (v4)includes theSustainable Sites (SS) Credit: Rainwater Management, which aims to reduce stormwater runoff and its environmental impacts through on-site management strategies.
According to theLEED Reference Guide for Homes Design and Construction (v4):
SS Credit: Rainwater Management (1–3 points)
Manage stormwater runoff through strategies such as directing runoff to permanent infiltration features (e.g., rain gardens, permeable paving, or bioswales) to reduce the volume and rate of runoff entering storm sewers.
Source: LEED Reference Guide for Homes Design and Construction, v4, Sustainable Sites Credit: Rainwater Management, p. 76.
TheLEED v4.1 Residential BD+Crating system confirms:
SS Credit: Rainwater Management
Directing rainwater runoff to permanent infiltration features, such as rain gardens or infiltration trenches, contributes to credit achievement by promoting on-site retention and reducing stormwater discharge.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer isdirect rainwater runoff toward an appropriate permanent infiltration feature(Option B), as this directly reduces runoff volume, aligning with the credit’s intent.
Why not the other options?
The design charrette must occur no later than which phase in order to earn the Integrative Process Credit, Option 2: Design Charrette?
Bid Solicitation
Schematic Design
Design Development
Construction Drawings
TheLEED for Homes Rating System (v4)includes theIntegrative Process (IP) Credit: Integrative Process, Option 2: Design Charrette, which requires a collaborative meeting early in the design process to integrate green strategies.
According to theLEED Reference Guide for Homes Design and Construction (v4):
IP Credit: Integrative Process, Option 2: Design Charrette (1 point)
Conduct a design charrette no later than the schematic design phase to ensure early integration of green strategies across all project aspects, including energy, water, and materials.
Source: LEED Reference Guide for Homes Design and Construction, v4, Integrative Process Credit: Integrative Process, p. 45.
TheLEED v4.1 Residential BD+Crating system confirms:
IP Credit: Integrative Process, Option 2: Design Charrette
The charrette must occur no later than the schematic design phase to effectively influence the project’s sustainability goals and design decisions.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer isSchematic Design(Option B), as the charrette must occur by this phase to ensure early integration of sustainable strategies.
Why not the other options?
For a two-bedroom unit in a multi-family building, a kitchen’s minimum airflow requirement for intermittent local exhaust is:
100 cfm (47 lps)
200 cfm (94 lps)
1 cfm per ft² (5.08 lps per m²)
2.5 cfm per ft² (12.7 lps per m²)
TheLEED for Homes Rating System (v4)addresses kitchen ventilation requirements in theIndoor Environmental Quality (EQ) Prerequisite: Ventilation, which referencesASHRAE Standard 62.2-2010for minimum airflow rates in residential buildings, including multi-family units.
According to theLEED Reference Guide for Homes Design and Construction (v4):
EQ Prerequisite: Ventilation
For intermittent local exhaust in kitchens, ASHRAE Standard 62.2-2010 requires a minimum airflow rate of 100 cfm (47 lps) for each kitchen to effectively remove cooking-related pollutants and moisture, regardless of the number of bedrooms.
Source: LEED Reference Guide for Homes Design and Construction, v4, Indoor Environmental Quality Prerequisite: Ventilation, p. 142.
TheLEED v4.1 Residential BD+Crating system confirms:
EQ Prerequisite: Ventilation
Intermittent local exhaust in kitchens must provide at least 100 cfm (47 lps) per ASHRAE 62.2-2010 to ensure adequate ventilation in multi-family units, including two-bedroom units.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer is100 cfm (47 lps)(Option A), as this is the minimum airflow requirement for intermittent kitchen exhaust per ASHRAE 62.2-2010.
Why not the other options?
B. 200 cfm (94 lps): This exceeds the minimum requirement for intermittent kitchen exhaust.
C. 1 cfm per ft² (5.08 lps per m²): Kitchen exhaust is not based on floor area but on a fixed rate (100 cfm).
How does the size of a home affect LEED for Homes credits?
Smaller homes are awarded credit in the Water Efficiency category because they use less water
Smaller homes are awarded credit in the Materials and Resources category because they use fewer materials
Larger homes are awarded credit in the Energy and Atmosphere category because they save more energy
Smaller homes are awarded credit in the Energy and Atmosphere category because they use less energy
TheLEED for Homes Rating System (v4)incorporates aHome Size Adjustmentthat adjusts the point threshold for certification based on the home’s conditioned floor area and number of bedrooms, recognizing that smaller homes inherently use fewer resources and energy.
According to theLEED Reference Guide for Homes Design and Construction (v4):
Home Size Adjustment
Smaller homes require fewer points to achieve certification due to their lower energy and resource use, particularly in theEnergy and Atmosphere (EA)category. The adjustment rewards smaller homes for their reduced energy consumption, as reflected in credits likeEA Credit: Annual Energy Use, where smaller homes typically achieve lower HERS Index scores due to lower energy demand.
Source: LEED Reference Guide for Homes Design and Construction, v4, Introduction, p. 24; Energy and Atmosphere Credit: Annual Energy Use, p. 116.
TheLEED v4.1 Residential BD+Crating system confirms:
Home Size Adjustment
Smaller homes benefit from a lower point threshold for certification, reflecting their inherently lower energy use, which aligns withEA Credit: Annual Energy Useby requiring less energy to achieve efficiency targets.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via LEED Online.
The correct answer issmaller homes are awarded credit in the Energy and Atmosphere category because they use less energy(Option D), as smaller homes have lower energy demands, making it easier to achieve energy efficiency credits.
Why not the other options?
Which of the following written materials must be provided to a new home occupant to comply with Energy and Atmosphere Prerequisite, Education of the Homeowner, Tenant or Building Manager?
ASHRAE Standard 90.1-2006
Operations and maintenance manual
1990 Americans with Disabilities Act (ADA) guidelines
Environmental Protection Agency (EPA) for Homes guidelines
The question references an "Energy and Atmosphere Prerequisite" for education, which appears to be a misnomer, as theLEED for Homes Rating System (v4)includes this requirement under theInnovation (IN) Prerequisite: Education of the Homeowner, Tenant, or Building Manager. This prerequisite ensures occupants receive materials to understand and maintain the home’s sustainable features.
According to theLEED Reference Guide for Homes Design and Construction (v4):
IN Prerequisite: Education of the Homeowner, Tenant, or Building Manager
Provide an operations and maintenance manual to the homeowner or tenant, including product manuals for installed equipment (e.g., HVAC, water heating systems) and information on the operation and maintenance of green features.
Source: LEED Reference Guide for Homes Design and Construction, v4, Innovation Prerequisite: Education of the Homeowner, Tenant, or Building Manager, p. 188.
TheLEED v4.1 Residential BD+Crating system confirms:
IN Prerequisite: Education of the Homeowner or Tenant
An operations and maintenance manual must be provided to occupants, detailing the function, operation, and maintenance of sustainable systems and equipment in the home.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer isoperations and maintenance manual(Option B), as this is the required written material to comply with the prerequisite.
Why not the other options?
For a site in a town with a population of 10,000 to qualify under Location and Transportation Credit, Site Selection, Option 2: Infill Development, what portion of the site’s perimeter must border previously disturbed land?
25%
50%
75%
100%
TheLEED for Homes Rating System (v4)outlines the requirements for theLocation and Transportation (LT) Credit: Site Selection, which includesOption 2: Infill Development. This credit encourages development on sites that minimize environmental impact by utilizing previously disturbed or developed land. For a site to qualify as infill development, a specific portion of its perimeter must border land that has been previously disturbed.
According to theLEED Reference Guide for Homes Design and Construction (v4), the requirement forOption 2: Infill Developmentis as follows:
Option 2. Infill Development (1 point)
Select a lot such that at least 75% of the perimeter of the project site immediately borders parcels that are previously developed or that have been graded or otherwise altered by direct human activities.
Source: LEED Reference Guide for Homes Design and Construction, v4, Location and Transportation Credit: Site Selection, p. 54.
This means that75% of the site’s perimetermust border previously disturbed land to meet the infill development criteria. The population of the town (10,000 in this case) does not directly affect the infill development requirement but may be relevant for other LT credits, such asAccess to Quality TransitorNeighborhood Pattern and Design, which consider community size or density. However, forSite Selection, Option 2, the focus is solely on the perimeter bordering previously disturbed land.
TheLEED v4.1 for Homesrating system aligns with this requirement, as it maintains the same infill development criteria for residential projects under the LT category:
LT Credit: Site Selection, Option 2. Infill Development
At least 75% of the project site’s perimeter must border previously developed or disturbed parcels.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
TheLEED AP Homes Candidate Handbookconfirms that the exam tests knowledge of theLEED v4rating system, including the LT credits, and references theLEED Reference Guide for Homes Design and Constructionas a primary study resource. The handbook does not alter the technical requirements but emphasizes understanding credit intent and compliance paths, such as the infill development perimeter rule.
Why not the other options?
A. 25%: This is too low and does not meet the minimum threshold for infill development, which requires significant adjacency to previously disturbed land to ensure compact,sustainable development.
B. 50%: While closer, 50% still falls short of the 75% requirement, which is designed to prioritize sites fully integrated into existing developed areas.
D. 100%: Requiring 100% of the perimeter to border previously disturbed land is overly restrictive and not specified in the LEED v4 or v4.1 requirements.
What is a benefit of rainwater harvesting in areas with substantial rainfall spikes?
Mitigates on-site erosion
Helps to maintain required firewater levels
Little-to-no benefit since precipitation is seasonal
Eliminates the need for low-flow plumbing fixtures
TheLEED for Homes Rating System (v4)addresses rainwater harvesting in theSustainable Sites (SS) Credit: Rainwater Management, which aims to reduce runoff and its environmental impacts, particularly in areas with significant rainfall events.
According to theLEED Reference Guide for Homes Design and Construction (v4):
SS Credit: Rainwater Management (1–3 points)
Rainwater harvesting systems (e.g., rain barrels, cisterns) capture and store rainwater, reducing runoff volume and mitigating on-site erosion, especially during substantial rainfall spikes, by preventing excessive water flow across the site.
Source: LEED Reference Guide for Homes Design and Construction, v4, Sustainable Sites Credit: Rainwater Management, p. 76.
TheLEED v4.1 Residential BD+Crating system confirms:
SS Credit: Rainwater Management
A key benefit of rainwater harvesting is mitigating on-site erosion by capturing runoff, particularly in areas with heavy rainfall, reducing soil displacement and environmental damage.
Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.
The correct answer ismitigates on-site erosion(Option A), as rainwater harvesting reduces runoff, preventing erosion during rainfall spikes.
Why not the other options?
TESTED 13 Aug 2025