Minimum Lot sizes for Duplex/Triplex's in the city

[Mauricio Botero]

Shifting to looking for RM1 zoned properties built as SFH to turn into Duplex or Triplexes. I've spoken with my main contractor about which kind of properties and lots would be ideal. Wondering what our community here believes is an ideal lot size, specifically what I think is the most critical part which is the width of the lot. I haven't built any yet so I have not gone through the process of having drawings done up, but I've been advised stick to lots 15' or wider.

Anyone have any successful full gut rehabs where you turned a SFH into MFH where the lot size was smaller then 15'?

[Mayer M.]

@Mauricio Botero

Must be RM1, no minimum width, but wouldn’t go any narrower than 15feet. I’m doing 3 15ft wide duplexes which are new construction and after walls and stairs it becomes a very narrow interior space. With remodels it’ll be even more difficult.

Lot size must be a minimum of 720 sf. RM1 zoning requires 360sf of land per unit for the first four units and 480sf after that. Larger properties can utilize some bonuses like green roof