Adopted edition
DCMR Title 12 (IBC 2015 base + DC amendments)
Inherits from District of Columbia county floor.
DC · City
Washington, DC.
DC is a federal district with its own building code (DCMR Title 12). Historic preservation review is exceptionally common — over 25 historic districts cover much of the central city.
Design wind speed
105 mph
ASCE 7 Risk Cat II, 3-second gust at 33 ft.
Climate zone (IECC)
4A
Drives R-value, fenestration U-factor, and air-leakage envelope rules.
Special zones
- HVHZ
- WBDR
- WUI
- FEMA SFHA possible
Permit office
DC Department of Buildings (DOB)
dob.dc.govDOB issues all permits; Historic Preservation Office concurrence required in HPRB districts.
Population
~689,000
Approximate. Drives roof-volume estimates and storm-event canvassing footprint.
ZIP coverage
23 ZIP codes inside Washington.
Each ZIP resolves to the correct city + county + state on every parcel lookup. Multi-jurisdiction parcels pick up amendments from each layer.
2000120002200032000420005200062000720008200092001020011200122001520016200172001820019200202002420032200362003720064
City-specific amendments
What's specific to Washington.
- §01DC Construction Codes (DCMR Title 12) layered on IBC 2015 base — periodic supplements.
- §02Historic Preservation Review Board (HPRB) review for parcels in Capitol Hill, Georgetown, Logan Circle, Dupont Circle, and ~25 other historic districts.
- §03Anacostia/Potomac flood overlays apply to waterfront parcels (FEMA AE).
- §04Federal Triangle and Pennsylvania Ave NW have additional review under federal authority.
Working in Washington?
Pull an address-levelcode packetfor any parcel in Washington. SkyCanvass resolves the address, looks up the Washington-specific amendments and the District of Columbia county and District of Columbia state floor, then emits a cited packet ready for permit submittal.
See theDistrict of Columbia countyoverview, or theDistrict of Columbia state directory.
Pull a Washington code packet.
Free to start — property lookups, state code access, the hail map, and your first storm report on us. No credit card required to look up an address.