Building reuse - maintain existing walls, floors and roof

Intent

To extend the life cycle of existing building stock, conserve resources, retain cultural resources, reduce waste and reduce environmental impacts of new buildings as they relate to materials manufacturing and transport.

Requirements

Maintain the existing building structure (including structural floor and roof decking) and envelope (the exterior skin and framing, excluding window assemblies and nonstructural roofing material).

Hazardous materials that are remediated as a part of the project must be excluded from the calculation of the percentage maintained.

The minimum percentage building reuse for each point threshold is as follows:

If the project includes an addition that is more than 6 times (for Core & Shell) and 2 times (for New Construction and Schools) the square footage of the existing building, this credit is not applicable.