Foundations and waterproofing license in District of Columbia
Who licenses it
Checked November 8, 2026. Rules and thresholds change; confirm with the board before you start work.
Homeowners: checking a pro
Ask for the license number, then look it up on the board's site above. On ExpertMarketplace every listing in this trade in District of Columbia shows the number and whether we've checked it.
Pros: listing on ExpertMarketplace
Add your license number, state and expiry date when you create your page. A listing in this trade in District of Columbia can't go live without it. Add your insurance too: listings show "Insured" or "No insurance on file" to every visitor.
Create my free pageFoundations and waterproofing in District of Columbia's biggest cities
Washington, D.C.ShawAdams MorganChevy ChaseBloomingdaleNaval Anacost AnnexWashingtonWashington Navy Yard