3437 14th Street Northwest, Washington
Map listing: license not checkedHVAC Contractors
State Registration
Contractors in District of Columbia
9 listed from open map data, downloaded November 6, 2026.
Who Licenses Contractors in District of Columbia?
District of Columbia requires contractors to register with the state. Threshold: Based on activity; no general dollar floor. We list 9 contractors there, most in Washington. We have not checked licenses for these listings, so check each one with the state or city.
District of Columbia License Rules
Cities and Towns
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Contractors With Full Profiles
1314 14th Street Northwest, Washington
Map listing: license not checkedPainters & Drywall
510 21st Street Northwest, Washington
Map listing: license not checkedFlooring & Tile
1045 Wisconsin Avenue Northwest, Washington
Map listing: license not checkedHVAC Contractors
Hiring in District of Columbia
Ask for the license or registration number and proof of insurance, get two or three written bids, keep payments behind the work, and confirm who pulls permits. The hiring checklist and the payment schedule calculator walk you through it. Trades such as electrical and plumbing are often licensed separately from general contracting, so ask about each one.