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SPECIAL REPORT
LEEDuser expert
emily reese moody
LEED AP BD+C, LFA, EcoDistricts AP, ENV SP, Fitwel Ambassador, WEDG Professional, ActiveScore AP, GGP, GPCP, GCP
Jacobs
Sustainability Director, Certifications & Compliance
SPECIAL REPORT
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Credit language
© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Choose one of the following options:
Option 1. nonroof and roof (2 points except Healthcare, 1 point Healthcare)
Meet the following criterion: Alternatively, an SRI and SR weighted average approach may be used to calculate compliance. Use any combination of the following strategies. Nonroof measures- Use the existing plant material or install plants that provide shade over paving areas (including playgrounds) on the site within 10 years of planting. Install vegetated planters. Plants must be in place at the time of occupancy permit and cannot include artificial turf.
- Provide shade with structures covered by energy generation systems, such as solar thermal collectors, photovoltaics, and wind turbines.
- Provide shade with architectural devices or structures that have a three-year aged solar reflectance (SR) value of at least 0.28. If three-year aged value information is not available, use materials with an initial SR of at least 0.33 at installation.
- Provide shade with vegetated structures.
- Use paving materials with a three-year aged solar reflectance (SR) value of at least 0.28. If three-year aged value information is not available, use materials with an initial SR of at least 0.33 at installation.
- Use an open-grid pavement system (at least 50% unbound).
Table 1. Minimum solar reflectance index value, by roof slope
|
Slope |
Initial SRI |
OR |
3-year aged SRI |
|---|---|---|---|---|
Low-sloped roof |
≤ 2:12 |
82 |
|
64 |
Steep-sloped roof |
> 2:12 |
39 |
|
32 |
OR
Option 2. parking under cover (1 point)
Place a minimum of 75% of parking spaces under cover. Any roof used to shade or cover parking must (1) have a three-year aged SRI of at least 32 (if three-year aged value information is not available, use materials with an initial SRI of at least 39 at installation), (2) be a vegetated roof, or (3) be covered by energy generation systems, such as solar thermal collectors, photovoltaics, and wind turbines. See all forum discussions about this credit »What does it cost?
Cost estimates for this credit
On each BD+C v4 credit, LEEDuser offers the wisdom of a team of architects, engineers, cost estimators, and LEED experts with hundreds of LEED projects between then. They analyzed the sustainable design strategies associated with each LEED credit, but also to assign actual costs to those strategies.
Our tab contains overall cost guidance, notes on what “soft costs” to expect, and a strategy-by-strategy breakdown of what to consider and what it might cost, in percentage premiums, actual costs, or both.
This information is also available in a full PDF download in The Cost of LEED v4 report.
Learn more about The Cost of LEED v4 »Frequently asked questions
|
My project has a balcony that projects away from the building, and does not provide a roof to an enclosed space for the building. How should the balcony be treated for this credit? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
If the manufacturer cannot provide the SR or SRI values, can standard values be used based on the color of the material? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
If the top floor of a parking garage includes parking spaces, is it considered a roof or non-roof surface? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
In LEED v4, are there standard allowed SR values for things like concrete, as in LEED 2009? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
How should we account for off-site parking under this credit?The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
Can I exclude functional usable areas like recreation courts or rooftop patios? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
What if I need to have a material tested? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
Projects that provide covered parking are eligible for points under this credit, but what if a project provides no parking? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
Should we include motorcycle parking spaces in our total parking count for the Parking Under Cover option? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
Addenda
1/11/2019 – Updated: 1/31/2019
Reference Guide Correction
Description of change:
Campus Applicable
No
Internationally Applicable:
No
4/6/2018 – Updated: 4/23/2018
Reference Guide Correction
Description of change:
BD+C:
Option 2. Parking under Cover,
Step 1. Determine total vehicle parking spaces in project
Replace both bullets with this "Do not count motorcycle or bicycle parking spaces as vehicle parking spaces"
O+M:
Step 1 Identify parking, hardscape and roof area
Replace first bullet with "Do not count motorcycle parking spaces as vehicle parking spaces. Exclude bicycle parking area."
Option 4. Parking under cover
Step 1 Evaluate compliance
Replace first bullet with "Do not count motorcycle parking spaces as vehicle parking spaces. Exclude bicycle parking area."
Option 2. Parking under Cover,
Step 1. Determine total vehicle parking spaces in project
Replace both bullets with this "Do not count motorcycle or bicycle parking spaces as vehicle parking spaces"
O+M:
Step 1 Identify parking, hardscape and roof area
Replace first bullet with "Do not count motorcycle parking spaces as vehicle parking spaces. Exclude bicycle parking area."
Option 4. Parking under cover
Step 1 Evaluate compliance
Replace first bullet with "Do not count motorcycle parking spaces as vehicle parking spaces. Exclude bicycle parking area."
Campus Applicable
No
Internationally Applicable:
Yes
7/1/2014 – Updated: 2/14/2015
Reference Guide Correction
Description of change:
Option 1, Step 3: Add a bullet point at the end of the list that reads “Selected materials may meet either the initial SRI threshold or the 3-year aged SRI threshold. They are not required to meet both.”
Option 1, Step 4: Add a bullet point at the end of the list that reads “Selected materials may meet either the initial SR threshold or the 3-year aged SR threshold. They are not required to meet both.”
Option 1, Step 4: Add a bullet point at the end of the list that reads “Selected materials may meet either the initial SR threshold or the 3-year aged SR threshold. They are not required to meet both.”
Campus Applicable
Yes
Internationally Applicable:
Yes
4/1/2015
LEED Interpretation
Inquiry:
Can v4 projects use typical solar reflectance (SR) values, or data from a previous project, for documentation of hardscape materials?
Ruling:
The following typical SR values can be used for standard nonroof materials, in lieu of project-specific testing data:
Typical Solar Reflectance Values for Standard Nonroof Materials
Gray cement concrete- Initial Solar Reflectance: 0.26, Three-Year Aged Solar Reflectance*: 0.18
White cement concrete- Initial Solar Reflectance: 0.70, Three-Year Aged Solar Reflectance*: 0.35
Asphalt concrete- Initial Solar Reflectance: 0.05, Three-Year Aged Solar Reflectance*: 0.10
*Three-year aged SR values are based on no cleaning.
Alternatively, documentation showing that the current concrete mix and sealant are equivalent to a tested mix and sealant from a previous project is acceptable, provided that all ingredients are the same and have not changed.
Campus Applicable
Yes
Internationally Applicable:
Yes
7/27/2009
LEED Interpretation
Inquiry:
The intent of this credit is to reduce the heat island effect created by large expanses of pavement. For a building to earn option B of the credit, they must provide shade for at least 50% of the provided parking. This can be underground, under a deck, under a roof, or under the building itself. In addition, a building that provides 100% of its parking under cover is eligible to earn an exemplary performance point. One of our project buildings is located in downtown San Francisco and does not provide any parking for building tenants. We believe that this fulfills the intent of the credit because there are no paved parking areas whatsoever that would contribute to the heat island effect. The net heat island effect is the same as a building that provides 100% of parking underground. However, the building that does not have parking at all gets 0 points where as a building that provides 100% parking underground gets 2 points. An existing building that was designed many years ago to reduce heat island effect should still be rewarded under a rating system that was incepted later on. We would like to petition the USGBC to consider awarding 1 point under Option B to projects that have no parking provided.
Ruling:
April 6, 2018 Update: LEED Interpretation 5370 is now applicable to both LEED v2009 and LEED v4 BD+C, ID+C, and O+M projects.
A project building with no onsite parking facilities may be eligible for 1 point under LEED v2009 SSc7.1 and LEED v4 SSc Heat Island Reduction, provided that no nearby offsite parking facilities are leased or owned by the building owner, property manager, or tenants for use by the building occupants. The project team must supply evidence of this by, in single-occupant buildings declaring that no such parking is provided, or in multi-tenant buildings by declaring that no such parking is provided and by detailing the method by which this was assessed. If such offsite facilities are leased or owned, the project team may document compliance with the credit by showing that 50% (O+M) or 75% (BD+C) of the provided spaces meet the Heat Island Reduction Roof requirements.
Campus Applicable
No
Internationally Applicable:
Yes
Documentation toolkit
The motherlode of cheat sheets
LEEDuser’s Documentation Toolkit is loaded with calculators to help assess credit compliance, tracking spreadsheets for materials, sample templates to help guide your narratives and LEED Online submissions, and examples of actual submissions from certified LEED projects for you to check your work against. To get your plaque, start with the right toolkit.
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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Choose one of the following options:
Option 1. nonroof and roof (2 points except Healthcare, 1 point Healthcare)
Meet the following criterion: Alternatively, an SRI and SR weighted average approach may be used to calculate compliance. Use any combination of the following strategies. Nonroof measures- Use the existing plant material or install plants that provide shade over paving areas (including playgrounds) on the site within 10 years of planting. Install vegetated planters. Plants must be in place at the time of occupancy permit and cannot include artificial turf.
- Provide shade with structures covered by energy generation systems, such as solar thermal collectors, photovoltaics, and wind turbines.
- Provide shade with architectural devices or structures that have a three-year aged solar reflectance (SR) value of at least 0.28. If three-year aged value information is not available, use materials with an initial SR of at least 0.33 at installation.
- Provide shade with vegetated structures.
- Use paving materials with a three-year aged solar reflectance (SR) value of at least 0.28. If three-year aged value information is not available, use materials with an initial SR of at least 0.33 at installation.
- Use an open-grid pavement system (at least 50% unbound).
Table 1. Minimum solar reflectance index value, by roof slope
|
Slope |
Initial SRI |
OR |
3-year aged SRI |
|---|---|---|---|---|
Low-sloped roof |
≤ 2:12 |
82 |
|
64 |
Steep-sloped roof |
> 2:12 |
39 |
|
32 |
OR
Option 2. parking under cover (1 point)
Place a minimum of 75% of parking spaces under cover. Any roof used to shade or cover parking must (1) have a three-year aged SRI of at least 32 (if three-year aged value information is not available, use materials with an initial SRI of at least 39 at installation), (2) be a vegetated roof, or (3) be covered by energy generation systems, such as solar thermal collectors, photovoltaics, and wind turbines.Cost estimates for this credit
On each BD+C v4 credit, LEEDuser offers the wisdom of a team of architects, engineers, cost estimators, and LEED experts with hundreds of LEED projects between then. They analyzed the sustainable design strategies associated with each LEED credit, but also to assign actual costs to those strategies.
Our tab contains overall cost guidance, notes on what “soft costs” to expect, and a strategy-by-strategy breakdown of what to consider and what it might cost, in percentage premiums, actual costs, or both.
This information is also available in a full PDF download in The Cost of LEED v4 report.
Learn more about The Cost of LEED v4 »In the end, LEED is all about documentation. LEEDuser’s Documentation Toolkit, for premium members only, saves you time and helps you avoid mistakes with:
- Calculators to help assess credit compliance.
- Tracking spreadsheets for materials purchases.
- Spreadsheets and forms to give to subs and other team members.
- Guidance documents on arcane LEED issues.
- Sample templates to help guide your narratives and LEED Online submissions.
- Examples of actual submissions from certified LEED projects.
|
My project has a balcony that projects away from the building, and does not provide a roof to an enclosed space for the building. How should the balcony be treated for this credit? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
If the manufacturer cannot provide the SR or SRI values, can standard values be used based on the color of the material? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
If the top floor of a parking garage includes parking spaces, is it considered a roof or non-roof surface? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
In LEED v4, are there standard allowed SR values for things like concrete, as in LEED 2009? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
How should we account for off-site parking under this credit?The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
Can I exclude functional usable areas like recreation courts or rooftop patios? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
What if I need to have a material tested? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
Projects that provide covered parking are eligible for points under this credit, but what if a project provides no parking? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
|
Should we include motorcycle parking spaces in our total parking count for the Parking Under Cover option? The answer to this question is available to LEEDuser premium members. Start a free trial » (If you're already a premium member, log in here.) |
1/11/2019 – Updated: 1/31/2019
Reference Guide Correction
Description of change:
Campus Applicable
No
Internationally Applicable:
No
4/6/2018 – Updated: 4/23/2018
Reference Guide Correction
Description of change:
BD+C:
Option 2. Parking under Cover,
Step 1. Determine total vehicle parking spaces in project
Replace both bullets with this "Do not count motorcycle or bicycle parking spaces as vehicle parking spaces"
O+M:
Step 1 Identify parking, hardscape and roof area
Replace first bullet with "Do not count motorcycle parking spaces as vehicle parking spaces. Exclude bicycle parking area."
Option 4. Parking under cover
Step 1 Evaluate compliance
Replace first bullet with "Do not count motorcycle parking spaces as vehicle parking spaces. Exclude bicycle parking area."
Option 2. Parking under Cover,
Step 1. Determine total vehicle parking spaces in project
Replace both bullets with this "Do not count motorcycle or bicycle parking spaces as vehicle parking spaces"
O+M:
Step 1 Identify parking, hardscape and roof area
Replace first bullet with "Do not count motorcycle parking spaces as vehicle parking spaces. Exclude bicycle parking area."
Option 4. Parking under cover
Step 1 Evaluate compliance
Replace first bullet with "Do not count motorcycle parking spaces as vehicle parking spaces. Exclude bicycle parking area."
Campus Applicable
No
Internationally Applicable:
Yes
7/1/2014 – Updated: 2/14/2015
Reference Guide Correction
Description of change:
Option 1, Step 3: Add a bullet point at the end of the list that reads “Selected materials may meet either the initial SRI threshold or the 3-year aged SRI threshold. They are not required to meet both.”
Option 1, Step 4: Add a bullet point at the end of the list that reads “Selected materials may meet either the initial SR threshold or the 3-year aged SR threshold. They are not required to meet both.”
Option 1, Step 4: Add a bullet point at the end of the list that reads “Selected materials may meet either the initial SR threshold or the 3-year aged SR threshold. They are not required to meet both.”
Campus Applicable
Yes
Internationally Applicable:
Yes
4/1/2015
LEED Interpretation
Inquiry:
Can v4 projects use typical solar reflectance (SR) values, or data from a previous project, for documentation of hardscape materials?
Ruling:
The following typical SR values can be used for standard nonroof materials, in lieu of project-specific testing data:
Typical Solar Reflectance Values for Standard Nonroof Materials
Gray cement concrete- Initial Solar Reflectance: 0.26, Three-Year Aged Solar Reflectance*: 0.18
White cement concrete- Initial Solar Reflectance: 0.70, Three-Year Aged Solar Reflectance*: 0.35
Asphalt concrete- Initial Solar Reflectance: 0.05, Three-Year Aged Solar Reflectance*: 0.10
*Three-year aged SR values are based on no cleaning.
Alternatively, documentation showing that the current concrete mix and sealant are equivalent to a tested mix and sealant from a previous project is acceptable, provided that all ingredients are the same and have not changed.
Campus Applicable
Yes
Internationally Applicable:
Yes
7/27/2009
LEED Interpretation
Inquiry:
The intent of this credit is to reduce the heat island effect created by large expanses of pavement. For a building to earn option B of the credit, they must provide shade for at least 50% of the provided parking. This can be underground, under a deck, under a roof, or under the building itself. In addition, a building that provides 100% of its parking under cover is eligible to earn an exemplary performance point. One of our project buildings is located in downtown San Francisco and does not provide any parking for building tenants. We believe that this fulfills the intent of the credit because there are no paved parking areas whatsoever that would contribute to the heat island effect. The net heat island effect is the same as a building that provides 100% of parking underground. However, the building that does not have parking at all gets 0 points where as a building that provides 100% parking underground gets 2 points. An existing building that was designed many years ago to reduce heat island effect should still be rewarded under a rating system that was incepted later on. We would like to petition the USGBC to consider awarding 1 point under Option B to projects that have no parking provided.
Ruling:
April 6, 2018 Update: LEED Interpretation 5370 is now applicable to both LEED v2009 and LEED v4 BD+C, ID+C, and O+M projects.
A project building with no onsite parking facilities may be eligible for 1 point under LEED v2009 SSc7.1 and LEED v4 SSc Heat Island Reduction, provided that no nearby offsite parking facilities are leased or owned by the building owner, property manager, or tenants for use by the building occupants. The project team must supply evidence of this by, in single-occupant buildings declaring that no such parking is provided, or in multi-tenant buildings by declaring that no such parking is provided and by detailing the method by which this was assessed. If such offsite facilities are leased or owned, the project team may document compliance with the credit by showing that 50% (O+M) or 75% (BD+C) of the provided spaces meet the Heat Island Reduction Roof requirements.
Campus Applicable
No
Internationally Applicable:
Yes
LEEDuser expert
emily reese moody
LEED AP BD+C, LFA, EcoDistricts AP, ENV SP, Fitwel Ambassador, WEDG Professional, ActiveScore AP, GGP, GPCP, GCP
Jacobs
Sustainability Director, Certifications & Compliance
