Washington, DC Zoning

11 districts. 1 overlays.
This profile is an earlier edition — some fields may be incomplete. An updated profile is in progress.

Districts

res_sf 7res_mf 4
CodeNameCategory Min lotHeight CoverageFAR Du/acParking Setbacks F/S/R
R-1-AR-1-Ares_sf5,000 sf45 ft0.40.6225 / 25 / 5
R-1-BR-1-Bres_sf5,000 sf50 ft0.450.75220 / 20 / 5
R-2R-2res_sf5,000 sf55 ft0.50.9215 / 15 / 5
R-3R-3res_mf5,000 sf60 ft0.551212.5 / 12.5 / 5
R-4R-4res_mf5,000 sf65 ft0.651.5212.5 / 12.5 / 5
R-5-AR-5-Ares_mf5,000 sf70 ft0.72210 / 10 / 5
R-5-BR-5-Bres_mf5,000 sf90 ft0.752.5210 / 10 / 5
RF-1RF-1res_sf5,000 sf60 ft0.61.1225 / 25 / 10
RF-2RF-2res_sf5,000 sf70 ft0.651.35225 / 25 / 10
RA-1RA-1res_sf5,000 sf70 ft0.72225 / 25 / 10
RA-2RA-2res_sf5,000 sf90 ft0.83225 / 25 / 10

Confidence: confirmed partial under review not found

Overlays

HD
Historic
HP

Applies to: Residential, Commercial, Office, Mixed-Use

coverage adjustment (%)-10
density multiplier-0.2
lot size multiplier0.15

Adopted building codes

District-wide

2015
2015
2014
2015
IECC (Residential)
2015
IECC (Commercial)
2015

Click a code label to open its state-by-state adoption atlas.

Formulas

Definitions

height
Grade to highest point of structure.
lot_coverage
Building footprint / lot area.
far
Gross floor area / lot area.
du_ac
Dwelling units per gross acre.
setback_front
Front property line to nearest building face.
setback_side
Side property line to nearest building face.
setback_rear
Rear property line to nearest building face.
parking
Spaces per dwelling unit unless noted.

Capacity calculations

max_footprint_sf
lot_area_sf * lot_coverage
max_gfa_sf
lot_area_sf * far
buildable_width_ft
lot_width_ft - setback_side_ft * 2
buildable_depth_ft
lot_depth_ft - setback_front_ft - setback_rear_ft
max_stories_approx
max_height_ft / 10

Massing explorer

Interactive 3D comparison across every district. Drag to orbit, scroll to zoom, use the slider to walk districts, and toggle applicable overlays in the right-side panel.

Sort by
LOW
HIGH
drag to orbit · scroll to zoom
Max height
ft
Floor area ratio
Lot coverage
%
Setbacks (F / S / R)
ft
Parking
/unit
Max density
du/ac
Min lot size
sf
Copy zoning profile
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District Category Height FAR Coverage Setbacks Parking Density Min lot Overlays

Research status

Data quality

53%completeness52 confirmed11 partial35 inferred
Documented gaps
  • Quirks not populated — requires markdown source review

Known issues

schema:v1-legacypriority:lowdata:gaps-present