The purpose of the RF-1 zone is to provide for areas predominantly developed with attached row houses on small lots within which no more than 2 dwelling units are permitted.

In the RF-1 Zone, 2 dwelling units may be located within the principal structure or 1 each in the principal structure and an accessory structure.

A building or structure existing before May 12, 1958 in the RF-1 zone may be used for more than 2 dwelling units (Subtitle U, Chapter 3).

Accessory Dwelling Units are not permitted in a dwelling unit in RF-1.  (Please note accessory apartments are reserved for R-1 through R-3 zones only.)

Development Standards
Height (ft.)1, 2 Stories Lot Occupancy3 Front Setback Rear Yard (ft.) Side Yard (ft.) Zoning Regulation Reference
RF-1 60
for a place of worship
3 60% for detached dwellings, semi-detached dwellings, row dwellings and flats, and places or worship A front setback shall be provided that is within the range of existing front setbacks of all structures on the same side of the street in the block where the building is proposed. 20 None4, 5, 6 Subtitle E, Chapter 3
for all other structures
for all other structures

Use Permissions Courtyards Pervious Surfaces Parking Inclusionary Zoning
Subtitle U, Chapter 3 Subtitle E § 204 Subtitle E § 205 Subtitle C, Chapter 7 Subtitle C, Chapter 10

A building or other structure may be erected to a height not exceeding 90 ft.; provided that the building or structure shall be removed from all lot lines of its lot for a distance equal to the height of the building or structure above the natural grade.
2 Institutional buildings or structures may be erected to a height not exceeding 90 ft., provided that the building or structure shall be removed from all lot lines of its lot a distance of not less than 1 ft. for each foot of height in excess of that authorized in the zone in which it is located.
3Conversion of a building or structure to an apartment house Greater of 60% or the lot occupancy as of the date of conversion.
4When a new dwelling or flat is erected that does not share a common division wall with an existing building or a building being constructed together with the new building, it shall have a side yard on each resulting free-standing side.
5 A side yard shall not be required along a side street abutting a corner lot in an RF zone.
6 No side yard is required for a principal building; however, any side yard provided on any portion of a principal building shall be at least five 5 ft. except as provided in this section.