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Steel & concrete modular homes in District of Columbia
Modular homes are built to state and local building codes and set on a permanent foundation. Here is what applies in District of Columbia.
District of Columbia program
- Administering agency
- District of Columbia Department of Buildings (DOB)
- Program / authority
- DCMR Title 12 (DC Construction Codes), Modular Structures section (2013 supplement §104.9.4)
- Code basis
- 2017 DC Construction Codes: 2015 ICC family, 2014 NEC, ASHRAE 90.1-2013, amended by DCMR Title 12
- Inspection & seal
- Modular units must be approved by a factory inspection agency recognized by the code official; plans are stamped by a DC-licensed engineer/architect.
- Good to know
- Foundation and footing inspections must pass before a module is set; on-site work needs separate permits. Modular text cited is from the 2013 supplement.
- Official source
- https://dob.dc.gov/page/dc-construction-codes
Summarised from public sources; rules change. Confirm with District of Columbia’s agency and your local building department before ordering.
Your project in District of Columbia
Step 1
Confirm zoning & permits
Local jurisdiction sets lot, setback and design rules. See Permits & Zoning.
Step 2
Plans reviewed to state code
We stamp plans for the code that applies in District of Columbia.
Step 3
Factory build & inspection
Third-party or state inspection happens in the factory, then final on site.
Step 4
Set, connect, certify
Modules crane in, joints are torqued and inspected, and local sign-off issues the CO.