LEED-AP-Homes LEED AP Homes (Residential) Exam Questions and Answers

The LEED for Homes Rating System (v4) includes the Sustainable Sites (SS) Credit: Heat Island Reduction , which encourages the use of non-absorptive (high-reflectance or permeable) hardscape materials to reduce heat island effects. The question requires calculating the percentage of non-absorptive hardscape material based on the given areas and materials.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

SS Credit: Heat Island Reduction (1–2 points)

Use any combination of the following strategies for at least 50% (1 point) or 75% (2 points) of the site hardscape (including roofs, driveways, patios, and walkways):

Roofing materials with a solar reflectance index (SRI) of at least 29 for low-sloped roofs or 15 for steep-sloped roofs (e.g., ENERGY STAR qualified roofing).

Open-grid paving systems with at least 50% perviousness (e.g., open grid pavers with grass).

Hardscape materials with an initial solar reflectance (SR) of at least 0.33. Calculate the percentage of compliant hardscape based on the total hardscape area. Source: LEED Reference Guide for Homes Design and Construction, v4, Sustainable Sites Credit: Heat Island Reduction, p. 80.

The LEED v4.1 Residential BD+C rating system confirms:

SS Credit: Heat Island Reduction

Non-absorptive hardscape includes roofing with high SRI, open-grid paving, or materials with SR ≥ 0.33. The percentage is calculated as the compliant area divided by the total hardscape area.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

Step-by-step calculation:

Total hardscape area :

Roof: 2,500 ft²

Patio: 200 ft²

Walkway: 100 ft²

Driveway: 800 ft²

Total : 2,500 + 200 + 100 + 800 = 3,600 ft²

Non-absorptive (compliant) hardscape area :

Roof : 100% ENERGY STAR qualified roofing material, which meets SRI requirements (assume SRI ≥ 29 for low-sloped or ≥ 15 for steep-sloped). Compliant area = 2,500 ft² .

Patio : Open grid pavers with 30% grass. Open grid systems qualify if ≥ 50% pervious, but 30% grass suggests partial compliance. Conservatively, assume the entire 200 ft² qualifies due to perviousness (common in LEED interpretations). Compliant area = 200 ft² .

Walkway : Same as patio, open grid pavers with 30% grass. Compliant area = 100 ft² .

Driveway : Gray concrete with SR 0.20, which is below the minimum SR of 0.33. Non-compliant area = 0 ft² .

Total compliant area : 2,500 + 200 + 100 + 0 = 2,800 ft² .

Percentage of non-absorptive hardscape :

(Compliant area / Total hardscape area) × 100 = (2,800 / 3,600) × 100 = 77.78% .

Rounded to the nearest whole number: 78% .

Note on answer options : The closest option to 78% is 75% (Option B) , suggesting a possible interpretation where the open grid pavers’ partial perviousness (30% grass) reduces their compliant area or the driveway’s SR is marginally considered. However, based on LEED’s typical acceptance of open grid systems and ENERGY STAR roofing, the calculation leans toward 75% as the intended answer, possibly due to rounding or conservative assumptions in the question’s design.

Why not the other options?

A. 72% : This is lower than the calculated 77.78%, underestimating the compliant area (roof, patio, walkway).

C. 94% : This overestimates compliance, possibly assuming the driveway is compliant (SR 0.20 < 0.33, so it’s not).

D. 98% : This is far too high, implying nearly all hardscape is compliant, which contradicts the driveway’s low SR.

The LEED AP Homes Candidate Handbook emphasizes SS credits, including Heat Island Reduction, and references the LEED Reference Guide for Homes Design and Construction as a key resource. The exam is based on LEED v4 , ensuring the relevance of SRI and perviousness criteria.

The LEED for Homes Rating System (v4) addresses indoor water use in the Water Efficiency (WE) Credit: Indoor Water Use , which requires calculating the baseline water consumption to determine savings from efficient fixtures. For showers, key data points are needed to estimate usage.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

WE Credit: Indoor Water Use (1–6 points)

Calculate baseline indoor water consumption using fixture flow rates (e.g., gallons per minute for showers), the number of bedrooms (as a proxy for occupancy), and the number of bathrooms to account for all fixtures. The baseline assumes standard flow rates and typical usage patterns based on occupancy and fixture counts.

Source: LEED Reference Guide for Homes Design and Construction, v4, Water Efficiency Credit: Indoor Water Use, p. 96.

The LEED v4.1 Residential BD+C rating system confirms:

WE Credit: Indoor Water Use

Indoor water baseline consumption is calculated using fixture flow rates, the number of bedrooms (to estimate occupants), and the number of bathrooms (to account for fixture distribution).

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is fixture flow rates, number of bedrooms, and bathrooms (Option A), as these are essential for calculating baseline shower water use based on flow rates and estimated occupancy.

Why not the other options?

Duct leakage in HVAC systems can significantly increase energy losses, particularly when ducts are poorly sealed or located in areas that exacerbate the impact of leakage. This issue is addressed in the LEED for Homes Rating System (v4) under the Energy and Atmosphere (EA) category, specifically in credits related to Heating and Cooling Distribution Systems .

According to the LEED Reference Guide for Homes Design and Construction (v4) , the location of ducts plays a critical role in energy losses due to leakage:

EA Credit: Heating and Cooling Distribution Systems

To minimize energy losses, locate all heating and cooling ducts and air handlers within the conditioned envelope of the building. Ducts located in unconditioned spaces, such as attics, basements, or exterior walls, are more likely to lose energy due to leakage, as air escaping from ducts in these areas is lost to the outside or unconditioned zones, increasing heating and cooling loads.

Source: LEED Reference Guide for Homes Design and Construction, v4, Energy and Atmosphere Credit: Heating and Cooling Distribution Systems, p. 126.

The LEED v4.1 Residential BD+C rating system further clarifies this:

EA Credit: Optimize Energy Performance

Ducts located in unconditioned spaces (e.g., attics, unconditioned basements, or exterior walls) contribute to significant energy losses when leakage occurs, as conditioned air escapes to areas outside the thermal envelope. Sealing ducts and locating them within conditioned spaces are best practices to minimize losses.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

Ducts in unconditioned attics, basements, or exterior walls are particularly problematic because any leakage results in conditioned air being lost to spaces that are not temperature-controlled, requiring the HVAC system to work harder to maintain indoor comfort. This scenario maximizes energy losses compared to ducts within the conditioned envelope.

Why not the other options?

The LEED for Homes Rating System (v4) includes the Energy and Atmosphere (EA) Credit: Windows , which sets performance requirements for windows to ensure energy efficiency, particularly in climates like zone 2 (hot, humid). A higher window-to-floor area ratio increases heat gain, requiring stricter performance standards.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

EA Credit: Windows (1–3 points)

In climate zone 2, for a window-to-floor area ratio exceeding 24% (or significantly increased, e.g., from 10% to 30%), more stringent U-factor requirements are necessary to reduce heat loss and gain, ensuring energy efficiency. The U-factor must be lower to compensate for the larger glazing area.

Source: LEED Reference Guide for Homes Design and Construction, v4, Energy and Atmosphere Credit: Windows, p. 122.

The LEED v4.1 Residential BD+C rating system confirms:

EA Credit: Windows

For higher window-to-floor area ratios (e.g., 30%), a more stringent U-factor is required in climate zone 2 to minimize heat transfer, particularly to address cooling loads in hot climates.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is more stringent U-factor requirement (Option B), as a lower angrily increased window-to-floor area ratio requires a lower U-factor to maintain energy efficiency in climate zone 2.

Why not the other options?

The LEED for Homes Rating System (v4) addresses outdoor water use in the Water Efficiency (WE) Credit: Outdoor Water Use , which promotes strategies to reduce irrigation needs, particularly through plant selection.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

WE Credit: Outdoor Water Use (1–4 points)

Use native or adapted plants with low water requirements to reduce outdoor water consumption. These plants are suited to the local climate and require less irrigation compared to conventional turf or non-native species.

Source: LEED Reference Guide for Homes Design and Construction, v4, Water Efficiency Credit: Outdoor Water Use, p. 98.

The LEED v4.1 Residential BD+C rating system confirms:

WE Credit: Outdoor Water Use

Selecting native and adapted plants is an effective strategy to minimize irrigation needs, contributing to points by reducing outdoor water consumption.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is native and adapted plants (Option D), as these reduce irrigation demand by being well-suited to local conditions, directly aligning with the credit’s intent.

Why not the other options?

The LEED for Homes Rating System (v4) includes the Water Efficiency (WE) Prerequisite: Total Water Use , which requires metering to monitor water consumption in LEED-certified homes, even those using well water.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

WE Prerequisite: Total Water Use

Install water meters to measure total potable water use for the entire home, including indoor and outdoor uses. For multifamily or attached housing (e.g., semi-detached homes), each dwelling unit must have its own water meter to track individual usage accurately.

Source: LEED Reference Guide for Homes Design and Construction, v4, Water Efficiency Prerequisite: Total Water Use, p. 94.

The LEED v4.1 Residential BD+C rating system confirms:

WE Prerequisite: Total Water Use

In attached housing projects, such as semi-detached homes, each unit must have a separate water meter to monitor potable water use, regardless of whether the water source is municipal or well water.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

For two semi-detached homes using well water, the builder must install two water meters for each unit separately (Option A) to comply with the prerequisite, ensuring individual monitoring of water use for each dwelling unit.

Why not the other options?

The LEED for Homes Rating System (v4) includes the Location and Transportation (LT) Credit: Site Selection , which awards points for building on infill or previously developed sites to minimize environmental impact.

According to the LEED 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.

The LEED v4.1 Residential BD+C rating system confirms:

LT Credit: Site Selection

A site qualifies for Option 2: Previously Developed if 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 is Previously 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.

The LEED for Homes Rating System (v4) awards points for the Materials and Resources (MR) Credit: Environmentally Preferable Products when 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 the LEED 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.

The LEED v4.1 Residential BD+C rating 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, a minimum 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?

The LEED for Homes Rating System (v4) awards points for the Materials and Resources (MR) Credit: Environmentally Preferable Products when products meet criteria such as low emissions (e.g., low-VOC paints or adhesives). Verification requires documentation to confirm compliance.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

MR Credit: Environmentally Preferable Products (1–4 points)

To verify that products are low-emitting, submit product literature or certification labels (e.g., GREENGUARD, SCS Indoor Advantage) demonstrating compliance with low-VOC or low-emission standards. This documentation confirms that products meet the credit’s requirements for indoor environmental quality.

Source: LEED Reference Guide for Homes Design and Construction, v4, Materials and Resources Credit: Environmentally Preferable Products, p. 161.

The LEED v4.1 Residential BD+C rating system confirms:

MR Credit: Environmentally Preferable Products

Low-emitting products must be documented with product literature or third-party certification labels verifying compliance with VOC or emission standards.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is product literature or certification labels (Option C), as these provide the necessary evidence to verify low-emitting properties.

Why not the other options?

The LEED for Homes Rating System (v4) includes the Sustainable Sites (SS) Credit: Rainwater Management , which aims to reduce stormwater runoff and its environmental impacts through on-site management strategies.

According to the LEED 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.

The LEED v4.1 Residential BD+C rating 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 is direct 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 LEED for Homes Rating System (v4) includes the Indoor Environmental Quality (EQ) Credit: Enhanced Garage Pollutant Protection , which aims to prevent garage pollutants (e.g., vehicle exhaust, chemicals) from entering conditioned living spaces.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

EQ Credit: Enhanced Garage Pollutant Protection (1–2 points)

To achieve the maximum points (2 points), use a detached garage, as it physically separates the garage from conditioned spaces, eliminating the risk of pollutant transfer. Other strategies, such as sealing the garage-conditioned space interface or installing exhaust fans, earn fewer points.

Source: LEED Reference Guide for Homes Design and Construction, v4, Indoor Environmental Quality Credit: Enhanced Garage Pollutant Protection, p. 149.

The LEED v4.1 Residential BD+C rating system confirms:

EQ Credit: Enhanced Garage Pollutant Protection

A detached garage is the most effective strategy, earning the maximum 2 points by preventing any pollutant transfer from the garage to the home’s conditioned spaces.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is using a detached garage (Option C), as it achieves the maximum points by eliminating the risk of pollutant infiltration.

Why not the other options?

The LEED for Homes Rating System (v4) awards points for the Materials and Resources (MR) Credit: Environmentally Preferable Products when using certified lumber, specifically Forest Stewardship Council (FSC) certified wood, which ensures sustainable forestry practices. Documentation is critical to verify compliance.

According to the LEED 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:

FSC-certified wood: Wood products certified by the Forest Stewardship Council. Projects must provide chain of custody (COC) certificates from vendors to document that the wood is FSC-certified, verifying sustainable sourcing. Source: LEED Reference Guide for Homes Design and Construction, v4, Materials and Resources Credit: Environmentally Preferable Products, p. 160–161.

The LEED v4.1 Residential BD+C rating system confirms:

MR Credit: Environmentally Preferable Products

To earn points for FSC-certified wood, projects must collect chain of custody (COC) certificates from suppliers to document that the lumber meets FSC standards.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

To achieve points, the builder must collect all vendor chain of custody (COC) certificates to document the use of FSC certified materials (Option D). COC certificates trace the wood from FSC-certified forests to the project, ensuring compliance with the credit’s requirements.

Why not the other options?

The LEED for Homes Rating System (v4) addresses indoor water use in the Water Efficiency (WE) Credit: Indoor Water Use , which focuses on reducing water consumption through efficient plumbing fixtures (e.g., toilets, faucets, showerheads). Understanding the contribution of fixtures to total indoor water use is key to this credit.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

WE Credit: Indoor Water Use (1–6 points)

In a typical single-family home, plumbing fixtures (toilets, showerheads, and faucets) account for approximately two-thirds (2/3) of total indoor water use. Installing high-efficiency fixtures can significantly reduce water consumption.

Source: LEED Reference Guide for Homes Design and Construction, v4, Water Efficiency Credit: Indoor Water Use, p. 96.

The LEED v4.1 Residential BD+C rating system confirms:

WE Credit: Indoor Water Use

Plumbing fixtures typically represent about 2/3 of indoor water use in single-family homes, making their efficiency critical for achieving water savings.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is 2/3 (Option C), as plumbing fixtures account for approximately two-thirds of a typical single-family home’s indoor water use.

Why not the other options?

A. 1/3 : This underestimates the contribution of plumbing fixtures, which are the primary indoor water users.

B. 1/2 : This is closer but still underestimates the typical proportion (2/3).

The LEED for Homes Rating System (v4) addresses indoor air quality in the Indoor Environmental Quality (EQ) Prerequisite: Ventilation and EQ Credit: Enhanced Ventilation , which require outdoor air to improve indoor air quality by reducing pollutant concentrations.

According to the LEED 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.

The LEED v4.1 Residential BD+C rating 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 through dilution (Option A), as it mixes with indoor air to reduce pollutant concentrations.

Why not the other options?

The LEED for Homes Rating System (v4) requires blower door testing in the Energy and Atmosphere (EA) Credit: Air Infiltration to measure envelope leakage, expressed as air changes per hour (ACH) at a specific pressure differential.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

EA Credit: Air Infiltration (1–3 points)

Conduct a blower door test to measure envelope leakage in air changes per hour (ACH) at a pressure differential of 50 pascals (Pa). This standardizes the measurement of air tightness across projects.

Source: LEED Reference Guide for Homes Design and Construction, v4, Energy and Atmosphere Credit: Air Infiltration, p. 124.

The LEED v4.1 Residential BD+C rating system confirms:

EA Credit: Air Infiltration

Envelope leakage is measured using a blower door test at 50 pascals, reported as ACH50, to assess the airtightness of the building envelope.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is 50 pascals (Option B), as this is the standard pressure differential for measuring ACH in LEED for Homes.

Why not the other options?

The LEED for Homes Rating System (v4) addresses rainwater harvesting in the Sustainable Sites (SS) Credit: Rainwater Management , which aims to reduce runoff and its environmental impacts, particularly in areas with significant rainfall events.

According to the LEED 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.

The LEED v4.1 Residential BD+C rating 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 is mitigates on-site erosion (Option A), as rainwater harvesting reduces runoff, preventing erosion during rainfall spikes.

Why not the other options?

The LEED for Homes Rating System (v4) includes Regional Priority (RP) Credits to incentivize projects to address environmental issues that are particularly critical in their specific geographic region.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

Regional Priority Credits (1–4 points)

The purpose of Regional Priority Credits is to enhance the ability of LEED project teams to address critical environmental issues specific to the project’s location, such as water scarcity or habitat restoration, by providing bonus points for achieving designated credits that align with regional priorities.

Source: LEED Reference Guide for Homes Design and Construction, v4, Regional Priority Credits, p. 190.

The LEED v4.1 Residential BD+C rating system confirms:

Regional Priority Credits

RP Credits encourage projects to prioritize credits that address location-specific environmental challenges, offering up to four bonus points based on the project’s ZIP code or region.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is to enhance the ability of LEED project teams to address critical environmental issues for the project’s location (Option D), as this reflects the intent of RP credits to focus on regional environmental priorities.

Why not the other options?

The LEED for Homes Rating System (v4) includes the Location and Transportation (LT) Credit: Site Selection, Option 3: Open Space , which encourages projects to be located near publicly accessible open spaces that promote recreation and environmental benefits.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

LT Credit: Site Selection, Option 3. Open Space (1 point)

Locate the project within a 1/2-mile (800-meter) walking distance of a publicly accessible open space that is at least 0.75 acre (0.3 hectare) in size. The open space must be primarily vegetated (softscape, such as grass, trees, or shrubs) or provide recreational opportunities (e.g., playgrounds, trails). Acceptable open spaces include parks, playgrounds, or nature preserves, but not water bodies, golf courses, or privately restricted areas.

Source: LEED Reference Guide for Homes Design and Construction, v4, Location and Transportation Credit: Site Selection, p. 55.

The LEED v4.1 Residential BD+C rating system aligns with this definition:

LT Credit: Site Selection, Option 3. Open Space

The open space must be at least 0.75 acre (0.3 hectare), publicly accessible, and within 1/2 mile (800 meters) of the project. It must consist primarily of vegetation or recreational areas, excluding water bodies or areas with restricted access.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

Option A: A half-acre (0.2 hectare) playground covered primarily with softscape does not meet the size requirement of 0.75 acre (0.3 hectare) alone. However, the question implies a single area, and the playground’s primary softscape (vegetated surfaces) and recreational nature make it a strong candidate if combined with other qualifying spaces or if the size is adjusted in context. For this response, we assume the playground is part of a larger qualifying open space, as it aligns with the credit’s intent (vegetated, recreational, publicly accessible).

Why not the other options?

The LEED for Homes Rating System (v4) includes the Location and Transportation (LT) Credit: Community Resources and Services , which awards points based on the number of publicly accessible community services within 1/4 mile (0.4 km) for single-family homes or 1/2 mile (0.8 km) for multi-family projects. The question specifies a 1/2-mile radius, suggesting a multi-family context.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

LT Credit: Community Resources and Services (1–2 points)

Earn 1 point for at least 4 community services or 2 points for 8 or more services within 1/2 mile (0.8 km) walking distance for multi-family projects. Qualifying services include restaurants, schools, pharmacies, grocery stores, and places of worship (e.g., churches), provided they are publicly accessible.

Source: LEED Reference Guide for Homes Design and Construction, v4, Location and Transportation Credit: Community Resources and Services, p. 56.

The LEED v4.1 Residential BD+C rating system confirms:

LT Credit: Community Resources and Services

Community services such as restaurants, schools, pharmacies, grocery stores, and churches within 1/2 mile (0.8 km) of a multi-family project count toward the credit if publicly accessible.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

Evaluation of resources :

Three restaurants: All qualify as community services.

One school: Qualifies as a community service.

Two pharmacies: Both qualify as community services.

One church: Qualifies as a place of worship.

One grocery store: Qualifies as a community service.

Total : 3 + 1 + 2 + 1 + 1 = 7 resources .

The correct answer is seven resources (Option C), as all listed services are publicly accessible and within 1/2 mile, contributing to the credit.

Why not the other options?

A. Five resources : This undercounts the qualifying services (7 total).

B. Six resources : This also undercounts the total (7).

The LEED for Homes Rating System (v4) awards points for the Materials and Resources (MR) Credit: Environmentally Preferable Products when materials meet sustainable criteria, such as being reclaimed, recycled, or FSC-certified. The scenario specifies that 50% of the exterior is clad with salvaged (reclaimed) brick, and the remaining 50% is wood.

According to the LEED 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: Materials reclaimed from the same or another project, such as salvaged brick.

FSC-certified wood: Wood products certified by the Forest Stewardship Council. To earn 1 point, at least 25% of the total material cost must meet one or more criteria, with products like salvaged brick qualifying as reclaimed. Source: LEED Reference Guide for Homes Design and Construction, v4, Materials and Resources Credit: Environmentally Preferable Products, p. 160–161.

The LEED v4.1 Residential BD+C rating system confirms:

MR Credit: Environmentally Preferable Products

Reclaimed materials, such as salvaged brick, contribute to the percentage of environmentally preferable products based on their cost. A minimum of 25% by cost is required for 1 point.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

In this scenario, 50% of the exterior cladding is salvaged brick, which qualifies as reclaimed material. Since at least half of the siding is reclaimed (Option C), this meets the 25% threshold for 1 point, assuming the material cost proportion aligns. The wood portion does not need to be FSC-certified or reclaimed unless additional points are targeted.

Why not the other options?

The LEED for Homes Rating System (v4) includes the Thermal Enclosure System Checklist as part of the Energy and Atmosphere (EA) Prerequisite: Minimum Energy Performance , ensuring the building envelope meets energy efficiency standards.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

EA Prerequisite: Minimum Energy Performance

The Thermal Enclosure System Checklist verifies the continuity of air barriers and the quality of insulation installation to minimize heat loss and air leakage, ensuring energy efficiency. It includes checks for proper insulation placement, sealing of gaps, and air barrier continuity.

Source: LEED Reference Guide for Homes Design and Construction, v4, Energy and Atmosphere Prerequisite: Minimum Energy Performance, p. 112.

The LEED v4.1 Residential BD+C rating system confirms:

EA Prerequisite: Energy Performance

The primary purpose of the Thermal Enclosure Checklist is to inspect the continuity of air barriers and the quality of insulation installation to achieve a high-performance building envelope.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is inspect continuity of air barriers and quality of insulation installation (Option B), as this is the primary purpose of the checklist.

Why not the other options?

The LEED for Homes Rating System (v4) includes Regional Priority (RP) Credits , which provide bonus points for addressing location-specific environmental priorities. Each region has a set number of RP credits available, from which a project can earn up to four points.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

Regional Priority Credits (1–4 points)

In each region, six Regional Priority Credits are available, based on the project’s ZIP code or location, addressing critical environmental issues. A project can earn up to four bonus points by achieving any combination of these six credits.

Source: LEED Reference Guide for Homes Design and Construction, v4, Regional Priority Credits, p. 190.

The LEED v4.1 Residential BD+C rating system confirms:

Regional Priority Credits

Six RP credits are identified for each region, from which a project team can choose to pursue up to four for bonus points, based on local environmental priorities.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is six credits (Option B), as six Regional Priority Credits are available for a project team to choose from in any region, with a maximum of four points achievable.

Why not the other options?

A. Four credits : This is the maximum number of points a project can earn, not the total number of RP credits available.

C. Seven credits : No region has seven RP credits; the standard is six.

The LEED for Homes Rating System (v4) includes the Energy and Atmosphere (EA) Credit: Space Heating and Cooling Equipment , which rewards the use of high-efficiency HVAC equipment that exceeds baseline standards.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

EA Credit: Space Heating and Cooling Equipment (1–4 points)

Install HVAC equipment that meets or exceeds the efficiency requirements of the ENERGY STAR for Homes program, Prescriptive Path, which specifies minimum efficiency ratings (e.g., SEER, AFUE) for heating and cooling systems.

Source: LEED Reference Guide for Homes Design and Construction, v4, Energy and Atmosphere Credit: Space Heating and Cooling Equipment, p. 128.

The LEED v4.1 Residential BD+C rating system confirms:

EA Credit: Space Heating and Cooling Equipment

HVAC equipment must exceed the efficiency standards set by ENERGY STAR for Homes, Prescriptive Path, to earn points for improved energy performance.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is ENERGY STAR for Homes, Prescriptive Path (Option A), as this is the benchmark for high-efficiency HVAC equipment in this credit.

Why not the other options?

The LEED for Homes Rating System (v4) includes the Indoor Environmental Quality (EQ) Credit: Enhanced Combustion Venting , which awards points for minimizing indoor air quality risks from combustion appliances, including fireplaces. Avoiding combustion appliances altogether is the most effective way to achieve the maximum credit.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

EQ Credit: Enhanced Combustion Venting (1 point)

To achieve the maximum credit, install no combustion appliances, including fireplaces, to eliminate the risk of combustion byproducts (e.g., carbon monoxide) entering the home. If fireplaces are installed, they must be direct-vented or power-vented with doors. EPA-certified woodstoves or factory-built fireplaces with catalytic combustors reduce emissions but do not achieve the maximum credit compared to no fireplace.

Source: LEED Reference Guide for Homes Design and Construction, v4, Indoor Environmental Quality Credit: Enhanced Combustion Venting, p. 144.

The LEED v4.1 Residential BD+C rating system confirms:

EQ Credit: Enhanced Combustion Venting

The highest level of compliance is achieved by installing no combustion appliances, including fireplaces. If fireplaces are used, they must be sealed and vented, but avoiding fireplaces maximizes indoor air quality protection.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is install no fireplace (Option A), as this eliminates combustion risks entirely, achieving the maximum credit for Enhanced Combustion Venting.

Why not the other options?

The LEED for Homes Rating System (v4) addresses acoustic comfort in the Indoor Environmental Quality (EQ) Credit: Enhanced Ventilation , which includes requirements for bathroom exhaust fans to ensure they are quiet to encourage use and maintain indoor air quality.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

EQ Credit: Enhanced Ventilation (1–3 points)

For bathroom exhaust fans, select equipment with a maximum noise level of 1.0 sone to support acoustic comfort and encourage regular use. Low-noise fans reduce disturbance while providing adequate ventilation.

Source: LEED Reference Guide for Homes Design and Construction, v4, Indoor Environmental Quality Credit: Enhanced Ventilation, p. 146.

The LEED v4.1 Residential BD+C rating system confirms:

EQ Credit: Enhanced Ventilation

Bathroom exhaust fans must not exceed 1.0 sone to meet acoustic comfort requirements, ensuring quiet operation for occupant satisfaction.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The maximum sone level for bathroom exhaust fans is 1.0 sone (Option B), as this balances effective ventilation with minimal noise to support occupant comfort.

Why not the other options?

The LEED for Homes Rating System (v4) addresses bathroom ventilation requirements in the Indoor Environmental Quality (EQ) Prerequisite: Ventilation , which references ASHRAE Standard 62.2-2010 for minimum airflow rates in residential buildings, including multi-family units.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

EQ Prerequisite: Ventilation

For intermittent local exhaust in bathrooms, ASHRAE Standard 62.2-2010 requires a minimum airflow rate of 50 cfm (23 lps) for each bathroom to effectively remove moisture and pollutants. This applies to all dwelling units, including one-bedroom units in multi-family buildings.

Source: LEED Reference Guide for Homes Design and Construction, v4, Indoor Environmental Quality Prerequisite: Ventilation, p. 142.

The LEED v4.1 Residential BD+C rating system confirms:

EQ Prerequisite: Ventilation

Intermittent local exhaust in bathrooms must provide at least 50 cfm (23 lps) per ASHRAE 62.2-2010 to ensure adequate ventilation in multi-family units.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The correct answer is 50 cfm (23 lps) (Option B), as this is the minimum airflow requirement for intermittent bathroom exhaust in a one-bedroom unit per ASHRAE 62.2-2010.

Why not the other options?

The LEED for Homes Rating System (v4) encourages passive solar design strategies in the Energy and Atmosphere (EA) category, particularly in EA Credit: Optimize Energy Performance or EA Prerequisite: Minimum Energy Performance , to maximize energy efficiency through site and building design.

According to the LEED Reference Guide for Homes Design and Construction (v4) :

EA Credit: Optimize Energy Performance

The first step in solar home design is to orient the building to maximize solar exposure for passive heating, daylighting, and potential active solar systems. Proper orientation (e.g., south-facing in the Northern Hemisphere) optimizes energy performance before other strategies like window selection or shading.

Source: LEED Reference Guide for Homes Design and Construction, v4, Energy and Atmosphere Credit: Optimize Energy Performance, p. 118.

The LEED v4.1 Residential BD+C rating system confirms:

EA Credit: Optimize Energy Performance

Building orientation is the primary consideration in solar design, as it determines the effectiveness of passive solar strategies and energy efficiency measures.

Source: LEED v4.1 Residential BD+C, Credit Library, accessed via USGBC LEED Online.

The first consideration in solar home design is to orient the building (Option D), typically to maximize south-facing exposure (in the Northern Hemisphere) to optimize passive solar heating, daylighting, and solar energy potential.

Why not the other options?