That's harder to answer. The building's zone may have existing restrictions that limit what may be done. For example, a common idea is to provide housing but

That's harder to answer. The building's zone may have existing restrictions that limit what may be done. For example, a common idea is to provide housing but that may not be an option depending on city ordinance and zoning regulations which means that philanthropist may first need to lobby the city to provide exemptions. If they donate or invest heavily in the city then they may get unfettered options or at least more options. Whether your company owns or leases the building is also a major limiting factor. - One example would be to make the first floor a branch office for the local police department. - If there is garage space then perhaps part of it could be sub-divided out to the fire department. Investing in the city buys a lot of power and exemptions from rules. - One floor could be turned into a public library that provides internet access, selling coffee and snacks. Accept donations of old PC's to be iPXE booted into windows or linux, users-choice, nfs/cifs diskless. - If the building is big enough, perhaps part of the first floor could be turned into a city civic center that people can rent out for events. - If the building already has a decent security system then perhaps one floor could be converted into a museum for the city. Local historians should enjoy this. - If there is a big parking garage it could sub-divided and become low-cost or free public parking, assuming the insurance company is down with this idea. Zoning regulations aside, all of these things have tax and insurance implications.