Three Units is Now Considered Commercial?

[Lekan King]

Good Morning,

I’m trying To get a building permit(BP) in Philadelphia for my 3 unit multi-family apartment. My residential BP was rejected because it’s considered commercial because I have more than 2 dwellings. Has anyone heard of this? I thought anything more than 4 dwellings was considered commercial.

[Ash Hegde]

For lending, it's true that 4 or less units is considered residential, but for permitting and local codes it may not be the same rule. Looks like @Eric Greenberg gave you good info.