Process of obtaining permits for multifamily dwelling in Baltimore

[Shem Varhaftik]

I'm about to go under contract on a home zoned as R-8, which according to Redfin is classified as residential multifamily. It states that both commercial and multifamily uses are permitted. However, the seller claims he purchased the property as a two-unit dwelling based on Baltimore City public records, yet it’s not legally permitted as such. The GIS map designates it as a single-family dwelling, but the property is clearly set up as two units, with separate HVAC, electrical systems, etc.

My main question is: Would it be possible to obtain a permit to legally convert it into a two-unit property? Many homes on the same street are multifamily, and this property is optimized for a two-unit setup. If it’s feasible, how long might the process take, and what costs could I expect for the necessary permits? I believe I can demonstrate that the property was originally used as a two-unit dwelling, which could strengthen my case.

I want to ensure this deal is still viable and that securing the proper permits is realistic, as my financial projections are based on this being a multifamily property.