Materials and Resources - Credit 1.1

Building Reuse - Maintain Existing Walls, Floors and Roof (1-3 points)

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The purpose of this credit is to leave the existing building structure and shell in place when renovating. The building shell includes the exterior skin and structural system but excludes window assemblies, interior walls, floor coverings and ceiling systems. This credit should be obtainable when renovating buildings with a concrete frame and/or skin since concrete generally has a long service life. This credit is worth 1 point if 55% of the existing building structure and shell is left in place, 2 points if 75% is left in place and 3 points for 95% is left in place.