Free US Green Building Council LEED AP Homes (Residential) Exam LEED-AP-Homes Exam Questions

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?

A . 25 cfm (11 lps): This is below the minimum required by ASHRAE 62.2-2010 for intermittent bathroom exhaust.

C . 1 cfm per ft (5.08 lps per m): Bathroom exhaust is not based on floor area but on a fixed rate (50 cfm for intermittent systems).

D . 2 cfm per ft (10.16 lps per m): This is also not based on floor area and is incorrect for bathroom exhaust requirements.

The LEED AP Homes Candidate Handbook emphasizes EQ prerequisites, including ventilation requirements, 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 ASHRAE 62.2-2010.

References:

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

LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).

LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).

USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4).

LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming bathroom exhaust requirements.

The LEED for Homes Rating System (v4) addresses fireplaces in the Indoor Environmental Quality (EQ) Credit: Enhanced Combustion Venting, which promotes safe combustion practices to prevent indoor air quality issues from fireplaces.

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

EQ Credit: Enhanced Combustion Venting (1 point)

For fireplaces, install doors and ensure they are direct-vented or power-vented to prevent combustion byproducts from entering the home. Unvented fireplaces or appliances are not permitted due to indoor air quality risks.

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

Fireplaces must have doors and be vented to the outdoors (e.g., direct-vent) to qualify for the credit, ensuring safe operation and minimal indoor air pollution.

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

The correct answer is install doors on the fireplace (Option A), as this, combined with proper venting (assumed in LEED-compliant fireplaces), ensures safe operation and compliance with the credit.

Why not the other options?

B . Use unvented combustion appliances: Unvented appliances are prohibited due to the risk of combustion byproducts like carbon monoxide entering the home.

C . Use an unvented decorative log fireplace: Unvented fireplaces are not allowed, as they pose significant indoor air quality risks.

D . Install carbon monoxide monitors in each room: While monitors are recommended for safety, they do not address the credit's requirement for vented fireplaces with doors.

The LEED AP Homes Candidate Handbook emphasizes EQ credits, including combustion venting, 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 fireplace doors.

References:

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

LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).

LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).

USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4).

LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming fireplace venting requirements.

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 to 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 (0.8-kilometer) 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 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 confirms:

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 (0.8 km) 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.

Evaluation of options:

A . 1/2 mi. (0.8 km) of a 3/4 acre (0.3 hectare) cornfield: A cornfield is agricultural land, not a publicly accessible recreational or vegetated open space as defined by LEED, so it does not qualify.

B . 3/4 mi. (1.2 km) of a publicly accessible park that is 3/4 acre (0.3 hectare) in size: The distance (3/4 mi.) exceeds the 1/2-mile (0.8 km) requirement, so it does not qualify.

C . 1/2 mi. (0.8 km) of a pond surrounded by a 1/2 acre (0.2 hectare) walkway, and across the street from a 1/4 acre (0.1 hectare) publicly accessible park: The pond is excluded (water bodies do not qualify), and the walkway (0.2 hectare) and park (0.1 hectare) together total 0.3 hectare (0.75 acre), meeting the size requirement within 1/2 mile. Assuming the walkway is vegetated or recreational, this qualifies.

D . 3/4 mi. (1.2 km) of a 1/4 acre (0.1 hectare) publicly accessible park, across the street from a 1/4 acre (0.1 hectare) lot which is private land open to the public: The distance (3/4 mi.) exceeds 1/2 mile, and the combined area (0.2 hectare) is below 0.3 hectare. Private land, even if publicly accessible, may not fully qualify without clear documentation.

The correct answer is Option C, as it meets the 1/2-mile distance and the combined 0.75-acre size requirement, assuming the walkway is vegetated or recreational.

The LEED AP Homes Candidate Handbook emphasizes LT credits, including Site Selection, 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 open space criteria.

References:

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

LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).

LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).

USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4).

LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming open space criteria.

The LEED for Homes Rating System (v4) includes the Innovation (IN) Credit: LEED Accredited Professional, which awards a point for having a LEED AP for Homes as a principal member of the project team to guide sustainable design and certification.

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

IN Credit: LEED Accredited Professional (1 point)

At least one principal participant of the project team must be a LEED AP for Homes and hold the credential prior to project registration. The LEED AP must be actively involved in the project to ensure effective implementation of LEED strategies.

Source: LEED Reference Guide for Homes Design and Construction, v4, Innovation Credit: LEED Accredited Professional, p. 189.

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

IN Credit: LEED Accredited Professional

The LEED AP for Homes must be a principal member of the project team (not the verification team) and possess the credential before project registration to earn the credit.

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

The correct answer is project team and possess the credential prior to project registration (Option B), as this meets the credit's requirements for the LEED AP's role and timing.

Why not the other options?

A . Project team and possess the credential prior to preliminary rating: The credential must be held before project registration, not preliminary rating.

C . Verification team and possess the credential prior to preliminary rating: The LEED AP must be on the project team, not the verification team.

D . Verification team and possess the credential prior to project registration: The LEED AP is part of the project team, not the verification team.

The LEED AP Homes Candidate Handbook emphasizes IN credits, including the LEED AP role, 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 the project team requirement.

References:

LEED Reference Guide for Homes Design and Construction, v4, USGBC, Innovation Credit: LEED Accredited Professional, p. 189.

LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).

LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).

USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4).

LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming LEED AP requirements.

The LEED for Homes Rating System (v4) promotes the use of native and adapted plants in the Water Efficiency (WE) Credit: Outdoor Water Use and Sustainable Sites (SS) Credit: Site Development -- Protect or Restore Habitat to reduce maintenance and environmental impacts compared to conventional turf.

According to the LEED 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.

The LEED v4.1 Residential BD+C rating 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 is decreased frequency of mowing (Option C), as native and adapted plants typically require less frequent maintenance than turf grass.

Why not the other options?

A . Increased stormwater runoff: Native plants reduce runoff by improving soil infiltration, unlike turf grass.

B . Decreased wildlife habitat: Native plants increase wildlife habitat, not decrease it, as per Question 75.

D . Increased use of potable water: Native plants reduce potable water use due to lower irrigation needs.

The LEED AP Homes Candidate Handbook emphasizes WE and SS credits, including benefits of native plants, 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 maintenance reduction.

References:

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

LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).

LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).

USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4).

LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming native plant advantages.

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?

A . Interior wall cavities are used to conduct return air: Using interior wall cavities for return air is not a best practice and may cause pressure imbalances or air quality issues, but it is less likely to cause significant energy losses due to supply duct leakage. Return air systems are typically within conditioned spaces, and the primary concern is airflow efficiency, not energy loss to unconditioned areas.

B . Duct layout includes multiple 90-degree bends on a single branch: Multiple 90-degree bends increase airflow resistance, reducing system efficiency, but they do not directly cause duct leakage. Leakage is related to unsealed joints or poor duct construction, not the geometry of the duct layout.

C . Ducts are located within conditioned envelope but joints are unsealed: While unsealed joints cause leakage, ducts within the conditioned envelope leak into spaces that are already temperature-controlled. This reduces the energy impact compared to leakage in unconditioned spaces, as the conditioned air remains within the thermal envelope.

The LEED AP Homes Candidate Handbook confirms that the exam tests knowledge of EA credits, including duct system design and energy performance, referencing the LEED Reference Guide for Homes Design and Construction as a primary resource. The handbook ensures that the exam is based on LEED v4, aligning with the focus on duct location and sealing.

References:

LEED Reference Guide for Homes Design and Construction, v4, USGBC, Energy and Atmosphere Credit: Heating and Cooling Distribution Systems, p. 126--127.

LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).

LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).

USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4).

LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming duct location impacts.

The LEED for Homes Rating System (v4) includes the Innovation (IN) Prerequisite: Education of the Homeowner, Tenant, or Building Manager, which ensures occupants are educated on the home's sustainable features and maintenance requirements.

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

IN Prerequisite: Education of the Homeowner, Tenant, or Building Manager

Provide a minimum of a two-hour walk-through of the home with the homeowner or tenant, including training on the operation and maintenance of equipment and systems, such as HVAC, water heating, and renewable energy systems.

Source: LEED Reference Guide for Homes Design and Construction, v4, Innovation Prerequisite: Education of the Homeowner, Tenant, or Building Manager, p. 188.

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

IN Prerequisite: Education of the Homeowner or Tenant

A two-hour walk-through with equipment training is required to educate homeowners on the operation and maintenance of green features.

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

The prerequisite requires a two-hour house walk-through including equipment training (Option C) to ensure homeowners understand how to operate and maintain the home's sustainable systems.

Why not the other options?

A . Educational information on ''green power'': While encouraged in IN Credit: Innovation, green power education is not a prerequisite requirement.

B . A map of neighborhood open spaces: This is relevant to LT Credit: Community Resources and Services, not homeowner education.

D . A DVD with operations and maintenance information: While supplementary materials like DVDs are allowed, the prerequisite mandates a walk-through, not a DVD.

The LEED AP Homes Candidate Handbook emphasizes IN prerequisites, including homeowner education, 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 the walk-through requirement.

References:

LEED Reference Guide for Homes Design and Construction, v4, USGBC, Innovation Prerequisite: Education of the Homeowner, Tenant, or Building Manager, p. 188.

LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).

LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).

USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4).

LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming homeowner education requirements.

The LEED for Homes Rating System (v4) includes Regional Priority (RP) Credits, which provide bonus points for achieving existing credits identified as environmentally significant for a project's region. For credits with multiple thresholds, exemplary performance can earn additional points.

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

Regional Priority Credits (1--4 points)

Regional Priority Credits are awarded for achieving designated credits that address location-specific environmental priorities. For credits with multiple thresholds (e.g., Water Efficiency Credit: Outdoor Water Use), an additional bonus point is awarded when the maximum threshold has been exceeded, demonstrating exemplary performance.

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

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

Regional Priority Credits

When an RP credit has multiple thresholds, a project earns the bonus point by meeting the base credit requirements, and an additional point may be earned for exemplary performance by exceeding the maximum threshold of the underlying credit.

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

The correct answer is points are awarded when the maximum threshold has been exceeded (Option C), as RP credits with multiple thresholds award bonus points for exemplary performance beyond the highest threshold.

Why not the other options?

A . Points are awarded at the minimum threshold: RP credits require achieving the base credit, not just the minimum threshold.

B . Points are awarded at the maximum threshold: Points are awarded for exceeding the maximum threshold, not just meeting it.

D . Points are awarded at particular levels of achievement: This is too vague; exemplary performance beyond the maximum threshold is required.

The LEED AP Homes Candidate Handbook emphasizes RP credits and exemplary performance, referencing the LEED Reference Guide for Homes Design and Construction as a key resource. The exam is based on LEED v4, ensuring the relevance of exceeding thresholds.

References:

LEED Reference Guide for Homes Design and Construction, v4, USGBC, Regional Priority Credits, p. 190; Innovation Credit: Innovation, p. 190.

LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).

LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).

USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4).

LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming exemplary performance criteria.

The question references an 'Energy and Atmosphere Prerequisite' for education, which appears to be a misnomer, as the LEED for Homes Rating System (v4) includes this requirement under the Innovation (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 the LEED 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.

The LEED v4.1 Residential BD+C rating 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 is operations and maintenance manual (Option B), as this is the required written material to comply with the prerequisite.

Why not the other options?

A . ASHRAE Standard 90.1-2006: This standard applies to commercial buildings, not residential, and is not required for homeowner education.

C . 1990 Americans with Disabilities Act (ADA) guidelines: These are unrelated to LEED homeowner education requirements.

D . Environmental Protection Agency (EPA) for Homes guidelines: While ENERGY STAR guidelines may be relevant, they are not required written materials for this prerequisite.

The LEED AP Homes Candidate Handbook emphasizes IN prerequisites, including education requirements, 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 the operations and maintenance manual.

References:

LEED Reference Guide for Homes Design and Construction, v4, USGBC, Innovation Prerequisite: Education of the Homeowner, Tenant, or Building Manager, p. 188.

LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).

LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).

USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4).

LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming education materials.

The LEED for Homes Rating System (v4) includes the Water 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 the LEED 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.

The LEED v4.1 Residential BD+C rating 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 ft.

For 4 points:

Turf grass: < 5% of 57,500 ft = < 0.05 57,500 = < 2,875 ft.

Native or adapted plants: > 75% of 57,500 ft = > 0.75 57,500 = > 43,125 ft.

Evaluate options:

A . 12,600 ft turf grass and 40,000 ft 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 ft turf grass and 40,000 ft 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 ft turf grass and 44,000 ft 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 ft turf grass and 44,000 ft 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).

Option C (2,500 ft turf grass and 44,000 ft native or adapted landscape) meets the

requirements for 4 points.

The LEED AP Homes Candidate Handbook emphasizes WE credits, including outdoor water use, 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 the table's criteria.

References:

LEED Reference Guide for Homes Design and Construction, v4, USGBC, Water Efficiency Credit: Outdoor Water Use, p. 98--99.

LEED v4.1 Residential BD+C, USGBC LEED Credit Library, accessed via LEED Online (https://www.usgbc.org/credits).

LEED AP Homes Candidate Handbook, GBCI, October 2024, p. 12 (references study resources and exam scope based on LEED v4).

USGBC LEED for Homes Rating System (v4), available via USGBC website (https://www.usgbc.org/resources/leed-homes-design-and-construction-v4).

LEED v4.1 for Homes, USGBC, accessed via LEED Online, confirming softscape ratios.