The purpose of the R-3 zone is to allow for row dwellings, while including areas within which row dwellings are mingled with detached dwellings, semi-detached dwellings, and groups of three or more row dwellings.

The R-3 zone is intended to permit attached rowhouses on small lots.

Development Standards
Height (ft.)1/
Minimum Lot Width (ft.) Area (sq. ft.) Lot Occupancy Front Setback Read Yard (ft.) Side Yard (ft.)2, 3 Pervious Surface (minimum) Zoning Regulation Reference
R-3 40 40 (detached) 4,000 (detached) 60% (Row Dwellings & Places of Worship) A front setback shall be provided within the range of existing front setbacks of all structures within an R-3 zone on the same side of the street in the block where the building is proposed. 20 8 (detached) 50% Subtitle D, Chapter 4
30 (semi-detached) 3,000 (semi-detached)
20 (row) 2,000 (row)
3 16 (IZ row) 1,600 (IZ row) 40% (all other structures)
40 (all other structures) 4,000 (all other structures)

Use Permissions Parking Inclusionary Zoning
Subtitle U, Chapter 2 Subtitle C, Chapter 7 Subtitle C, Chapter 10
R- Use Group C

1 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.

2 No side yard is required for attached dwellings, but if a side setback is provided, it shall be no less than 5 ft.

3 A single household dwelling, flat, or multiple dwelling that does not share a common division wall with an existing building or a building being constructed together with the new building, shall have a side yard on each resulting free-standing side.