District of Columbia residential energy code

District of Columbia residential energy code (2015 IECC base (DC Energy Conservation Code))

As of 2026-10-22. DOE's Building Energy Codes Program (energycodes.gov) lags state adoption, so where a state's own rule was read it governs and DOE's differing figure is noted. Residential means one- and two-family dwellings and townhouses. Local amendments can apply; check the code body before relying on a section.

Key features

Code in force: 2015 IECC base (DC Energy Conservation Code)
In force since: 2020-05-29
Adoption: Statewide mandatory code
The DC Department of Buildings notes post-2020 supplements are not reflected on its page; whether a later supplement applies is unresolved.
Provisional: a state source was not opened for every point above; DOE energycodes.gov is cited where noted.

Governing body

State of District of Columbia

Region

Applies to

General contracting HVAC Insulation Electrical Windows & doors

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