Washington, D.C., District of Columbia Building Codes

Updated : 04/26/2024

Overview

The District of Columbia adopted the 2015 International Residential Code (IRC), including Appendices F, H, K, and M, with amendments, as the districtwide residential code known as the 2017 District of Columbia Residential Code (DCRC) and part of the 2017 DC Construction Codes. D.C. Code § 6-1409 (Mayor may issue rules to adopt and amend codes to be adopted by DC Council); DCMR 2017-12-B1, et seq. (Residential Code Supplement of 2017, amendments); 2015 IRC. The District of Columbia adopted the 2015 International Building Code (IBC), including Appendices E, G, and N, with amendments, as the districtwide building code known as the 2017 District of Columbia Building Code (DCBC) and part of the 2017 DC Construction Codes. D.C. Code § 6-1409 (Mayor may issue rules to adopt and amend codes to be adopted by DC Council); DCMR 2017-12-A1, et seq. (Building Code Supplement of 2017, amendments); 2015 DCBC. The District of Columbia adopted the 2015 International Existing Building Code (IBC), with amendments, as the districtwide building code known as the 2017 District of Columbia Building Code (DCBC) and part of the 2017 DC Construction Codes. D.C. Code § 6-1409 (Mayor may issue rules to adopt and amend codes to be adopted by DC Council); DCMR 2017-12-J1, et seq. (Existing Building Code Supplement of 2017, amendments); 2015 IEBC.

The Building Code Official is charged with enforcement of the DC Construction Codes. D.C. Code § 6-1405.01.

Helpful resources for Washington, D.C., District of Columbia include the following.

Residential Building Code

District of Columbia adopted a statewide mandatory residential code that will control. Authority for local amendments will be limited.See PLRB, District of Columbia Building Codes for more information on state level codes.

Washington, D.C. adopted the 2015 IRC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the model code here.

You can find information about amendments to the model code here.

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Drip Edge

Drip Edge: yes

Ice Barrier

Are ice barriers required for Washington, D.C. ? Yes
Citation: Section: 2017-12-B301
Municipal Code https://www.dcregs.dc.gov/Common/DCMR/SectionList.aspx?SectionNumber=2017-12-B301
Comments:

TABLE R301.2(1)
CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA

GROUND

SNOW LOAD

WIND DESIGN

SEISMIC DESIGN CATEGORYf

SUBJECT TO DAMAGE FROM

WINTER DESIGN TEMPe

ICE BARRIER UNDERLAY-MENT REQUIREDh

FLOOD HAZARDSg

AIR FREEZING

INDEXi

MEAN ANNUAL TEMPj

Speedd (mph)

Topographic

effectsk

Weatheringa

Frost line depthb

Termitec

30

115

Not Applicable (NA)

A

Severe

30

M-H

17

YES

500

55

Government Officials
Last Name First Name Title E-mail Phone Note
Muzikir Abdul Department of Consumer and Regulatory Affairs abdul.muzikir@dc.gov 202/442-4400

Comments

The District of Columbia adopted the 2015 International Residential Code (IRC), including Appendices F, H, K, and M, with amendments, as the districtwide residential code known as the 2017 District of Columbia Residential Code (DCRC) and part of the 2017 DC Construction Codes. D.C. Code § 6-1409 (Mayor may issue rules to adopt and amend codes to be adopted by DC Council); DCMR 2017-12-B1, et seq. (Residential Code Supplement of 2017, amendments); 2015 IRC

The Building Code Official is charged with enforcement of the DC Construction Codes. D.C. Code § 6-1405.01.

Existing Buildings

Existing buildings, meaning buildings that were built in accordance to code at the time of construction, typically merit extra consideration in a current updated code.

The District of Columbia did not adopt Appendix J of the 2015 IRC. DCMR 2017-12-B1, et seq..

Commercial Building Code

Washington, D.C. adopted the 2015 IBC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the code here.You can find information about the adoption without amendment to the model code here.

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Comments

The District of Columbia adopted the 2015 International Building Code (IBC), including Appendices E, G, and N, with amendments, as the districtwide building code known as the 2017 District of Columbia Building Code (DCBC) and part of the 2017 DC Construction Codes. D.C. Code § 6-1409 (Mayor may issue rules to adopt and amend codes to be adopted by DC Council); DCMR 2017-12-A1, et seq. (Building Code Supplement of 2017, amendments); 2015 DCBC

The Building Code Official is charged with enforcement of the DC Construction Codes. D.C. Code § 6-1405.01.

Existing Buildings

The District of Columbia adopted the 2015 International Existing Building Code (IBC), with amendments, as the districtwide building code known as the 2017 District of Columbia Building Code (DCBC) and part of the 2017 DC Construction Codes. D.C. Code § 6-1409 (Mayor may issue rules to adopt and amend codes to be adopted by DC Council); DCMR 2017-12-J1, et seq. (Existing Building Code Supplement of 2017, amendments); 2015 IEBC.

Other Building Codes

The District of Columbia also adopted the following companion codes as part of the 2017 DC Construction Codes:

  • 2017 District of Columbia Energy Conservation Code

  • 2017 District of Columbia Green Construction Code

  • 2017 District of Columbia Swimming Pool and Spa Code

  • 2015 International Plumbing Code

  • 2015 International Fuel Gas Code

  • 2015 International Mechanical Code

  • 2014 National Electrical Code (NFPA 70)

  • 2015 International Fire Code

  • 2015 International Property Maintenance Code

  • 2015 International Private Sewage Disposal Code