ID#1864 made on
MRc1.1 - Building reuse - maintain 75% of existing walls, floors and roof
LEED BD+C: New Construction, LEED BD+C: Schools, LEED BD+C: Core and Shell
The project in question includes renovations to a large resort hotel, and a major addition. In order to conserve resources while providing maximum cultural value, we propose to minimize modifications...
The project in question includes renovations to a large resort hotel, and a major addition. In order to conserve resources while providing maximum cultural value, we propose to minimize modifications to the existing building, focusing on renovations that have an impact on public experience and operational capacity, e.g. new check-in stations, expanded retail, relocation of day care to the addition, renovation of an existing cafe, relocation and expansion of luggage storage, addition of one cooling tower, reconfiguration of administrative offices, and modifications to the staff cafeteria. Probable final build-out data are as follows: Addition = 25% of total floor area and 95% of total construction cost; Existing building = 75% of total floor area with renovations accounting for 5% of total construction cost. The renovated portions of the existing building, but not the entire existing building, will be included in calculations for all other applicable credits. Please confirm that this project can pursue LEED-NC MR Credit 1 - Building Re-use. In this scenario, please confirm that when we enter data into the LEED Online Project Summary, the "% New Construction" field = 25% and the "% Renovation" field = 75%, based on total floor areas of new and existing buildings including untouched portions, and NOT based on relative scope of work. This approach appears consistent with the intent of MR Credit 1 to conserve resources, as it illustrates the extent of conservation.
The inquiry is seeking clarification on how the percentages of new addition versus existing building are to be calculated. These percentages are based on square footage and not relative scope or construction cost. Per the credit requirements, for a project to be eligible for MRc1, the square footage of the addition must not be more than two times the square footage of the existing building. It is unclear however whether the stated 75% of total floor area for the existing building represents the whole existing building or just the portion impacted by construction. A project may determine the LEED project boundary in the existing building as best fits the project, provided this boundary includes all relevant construction work. In addition, the LEED project boundary must remain consistent across all LEED prerequisites and credits. For example, the project team may not include the entire existing building for some credits but only the renovated portions for other credits. Applicable Internationally.
Related Addenda (Corrections & Interpretations)