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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Prerequisites
None.Credits
8.1 Indoor contaminant control during construction (1 point). Upon installation, seal all permanent ducts and vents to minimize contamination during construction. Remove any seals after all phases of construction are completed.8.2 Indoor contaminant control (1 point each, maximum 2 points). Select from the following measures:a. Design and install permanent walk-off mats at each entry that are at least 4 feet in length and allow accessibility for cleaning (e.g., grating with catch basin).b. Design a shoe removal and storage space near the primary entryway, separated from living areas. This space may not have wall-to-wall carpeting, and it must be large enough to accommodate a bench and at least two pairs of shoes per bedroom.c. Install a central vacuum system with exhaust to the outdoors. Ensure that the exhaust is not near any ventilation air intake.8.3 Preoccupancy flush (1 point). Flush the home with fresh air, according to the following guidelines:- Flush prior to occupancy but after all phases of construction are completed.
- Flush the entire home, keeping all interior doors open.
- Flush for 48 total hours; the hours may be nonconsecutive, if necessary.
- Keep all windows open and run a fan (e.g., HVAC system fan) continuously or flush the home with all HVAC fans and exhaust fans operating continuously at the highest flow rate.
- Use additional fans to circulate air within the home.
- Replace or clean HVAC air filter afterward, as necessary.
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.
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Frequently asked questions
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To read the full article, subscribe now to BuildingGreen Premium
For full access, sign up now for LEEDuser Premium
LEEDuser tip sheets, written by our team of LEED experts, fill gaps in knowledge we’ve observed between the LEED Reference Guide, LEED Online, and LEED Interpretations. We update them regularly so that our members get the most relevant guidance for current issues on their projects.
( does not provide premium access to LEEDuser)
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© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Prerequisites
None.Credits
8.1 Indoor contaminant control during construction (1 point). Upon installation, seal all permanent ducts and vents to minimize contamination during construction. Remove any seals after all phases of construction are completed.8.2 Indoor contaminant control (1 point each, maximum 2 points). Select from the following measures:a. Design and install permanent walk-off mats at each entry that are at least 4 feet in length and allow accessibility for cleaning (e.g., grating with catch basin).b. Design a shoe removal and storage space near the primary entryway, separated from living areas. This space may not have wall-to-wall carpeting, and it must be large enough to accommodate a bench and at least two pairs of shoes per bedroom.c. Install a central vacuum system with exhaust to the outdoors. Ensure that the exhaust is not near any ventilation air intake.8.3 Preoccupancy flush (1 point). Flush the home with fresh air, according to the following guidelines:- Flush prior to occupancy but after all phases of construction are completed.
- Flush the entire home, keeping all interior doors open.
- Flush for 48 total hours; the hours may be nonconsecutive, if necessary.
- Keep all windows open and run a fan (e.g., HVAC system fan) continuously or flush the home with all HVAC fans and exhaust fans operating continuously at the highest flow rate.
- Use additional fans to circulate air within the home.
- Replace or clean HVAC air filter afterward, as necessary.
