Evaluate a number of scenarios to achieve the credit. Look for options that work best for the design, and see if there are any trade-offs or overlaps with other LEED credits.
Consider tradeoffs when reusing certain elements. Retaining existing interior partitions, for example, is a simple strategy which can help to attain this credit. However, depending on the placement of the existing walls, this must be weighed against the possible loss of daylighting and views. It should also be balanced against trade-offs related to energy efficiency and indoor environmental quality, too.
Older buildings often contain hazardous materials, including asbestos, lead, and others. The building owner may need to conduct an ASTM E1527-05 Phase I Environmental Assessment by an environmental consultant, and if required, a Phase II assessment with a remediation plan to ensure a safe and healthy facility.
Tabulate reused surfaces of following elements: the surface area (one side only) of all finished flooring, finished ceilings, interior doors, exterior or party walls, visible surfaces of built-in case goods, and two sides of interior non-structural walls.
Update the checklist assembled during schematic design to confirm that the project is still on track with 50% of reused interior elements for LEED compliance. For example, a wall initially assumed to be in good condition may be found to be in poor condition, and needs to be replaced with new materials. The checklist will help track credit compliance throughout the design and construction process.
