Sometimes moving forward for a new facility is to work with what you have. Reda [and Hartung] walk through the phased occupied renovation and additions to Kensington Fire Station 25, Montgomery Co., MD. In a fully developed area of the county, no suitable parcels were in the first due area for a new station or a temporary facility. The design team used creative solutions to on site temporary quarters and careful phasing to allow the station to operate while construction took place, ultimately renovating every area of the building and doubling the size of the station. Lessons include insights from the design team and fire operations on technical challenges with this complex project, consideration for modernizing an existing facility, and designs created by the phased construction of an occupied building.