Converting duplex into triplex

[Freddy German]

I own an RM-1 property in Philadelphia that is currently being used as a duplex. The basement is huge and unfinished, has an entrance that leads to it from the front porch and it’s own exit into the backyard. To me it seems like it would be the ideal space for another unit. Other properties on the same street have been converted into triplexes. Can anyone recommend a design build company that would handle any zoning needs with the city, as well as complete the construction and leave it rent-ready for me? Any advice would be greatly appreciated.

[Dan Powers]

Philly is pretty simple when it comes to adding more units, first you have to have the correct zoning (RM-1), if not you could apply for a variance, thought this is a long process. Next it comes down to the lot dimensions, 1-4 units need to have a minimum of 360 sqft. so multiply your lot dimensions if they come out to over 720 you can have 2 units, 1080 for 3 units, and 1440 for 4 units. Anything additional unit over 4 needs 480 sqft. You also have to watch out for specific zoning overlays, ie. around the temple area, you need 480 for sqft. for all units.