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.
20001 20002 20003 20004 20005 20006 20007 20008 20009 20010 20011 20012 20015 20016 20017 20018 20019 20020 20024 20032 20036 20037 20064
City-specific amendments
What's specific to Washington.
- §01 DC Construction Codes (DCMR Title 12) layered on IBC 2015 base — periodic supplements.
- §02 Historic Preservation Review Board (HPRB) review for parcels in Capitol Hill, Georgetown, Logan Circle, Dupont Circle, and ~25 other historic districts.
- §03 Anacostia/Potomac flood overlays apply to waterfront parcels (FEMA AE).
- §04 Federal Triangle and Pennsylvania Ave NW have additional review under federal authority.
Working in Washington?
Pull an address-level code packet for 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 the District of Columbia county overview, or the District 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.