City of Baltimore
Baltimore City Code

§ 15-302. Measurement of density.

In the residential districts, the maximum number of permitted dwelling units on a lot is determined by dividing the total area of the lot by the lot area requirement that applies to the district in which the lot is located. On a lot with 3 or more dwelling units, a fraction of the total area that is 50% or more of the required lot area factor counts as an additional permitted dwelling unit.