Single-family homes, townhouses, and duplexes in Washington, DC are subject to the following codes:
See the 3 flowcharts below to determine whether your project requires each of these.
If sprinklers are required, their design must follow NFPA 13D or ICC P2904, which are fed from a domestic water system and are much simpler than NFPA 13 or NFPA 13R systems for commercial and low/midrise multifamily buildings, respectively.
FAQ: Alterations under the existing building code are categorized as Level 1 (remove and replace), Level 2 (reconfigure up to 50%) or level 3 (reconfigure over 50%).
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