Known as 30 Mac, this LEED for Homes Gold-Certified 10-unit apartment building on 30 MacLean Street is adapted from a former Masonic Temple in Princeton’s Witherspoon-Jackson Historical District. The apartments range from studio to two bedrooms, feature a balance of modern and historic elements, and include two affordable housing units. Within walking distance of Princeton’s downtown, 30 Mac illustrates how excellent design for adaptive reuse can enhance a community and honor its history in addition to modeling successful multifamily construction throughout pandemic conditions.