DC Plumbing & Gas Permits: When They're Required and Who Can Pull One

After water damage, much of the most important repair work is plumbing and gas — a burst supply line, a failed water heater, a corroded shutoff, a gas appliance exposed to floodwater. In the District, that work is permitted and inspected, and the permit must be pulled by a licensed tradesperson. This page is a logistics reference: which work triggers a permit, who may pull it, and how the process runs. It does not cover repair technique.

The permit trigger: type of work, not the word “repair”

The District keys permits to the kind of work being done. “Restoration” or “water-damage repair” is not itself a permit category — what matters is whether the job includes regulated plumbing or gas work. As a rule of thumb:

The broader decision matrix across all trades is on the DC permits & licensing pillar, and demolition/structural work is covered on demolition & construction permits.

Who can pull the permit

This is the part homeowners most often get wrong. In the District, plumbing and gas permits are tied to licensed trades:

• A DC-licensed master plumber (or a licensed contractor employing one) pulls the plumbing permit.
• A DC-licensed master gas fitter pulls the gas permit.

A homeowner generally cannot pull a trade plumbing or gas permit themselves the way they sometimes can for minor general repairs. Practically, this means the qualified tradesperson you hire is responsible for obtaining the permit — and you should expect them to. A contractor who proposes to skip the permit on plumbing or gas work is a red flag.

How the process runs

While the licensed tradesperson handles the mechanics, knowing the sequence helps you keep a job on track:

1. Scope and application. The plumber or gas fitter files the permit application with the Department of Buildings, describing the work. Many permits are handled through DOB’s online permitting system.
2. Review and issuance. DOB reviews the application; straightforward trade permits for like-for-like replacement are typically faster than permits involving design review.
3. The work. The licensed trade performs the installation to the District’s adopted plumbing and mechanical/fuel-gas codes.
4. Inspection. DOB inspects the work. Gas work in particular is inspected for safe connection and venting. The permit is not truly “closed” until inspection passes.
5. Final sign-off. Passing inspection is what makes the work documented and defensible — for resale, for insurance, and for safety.

Keep a copy of the permit number and the passed-inspection record. These are the documents that prove the work was done legally, which matters when you sell or when an insurer reviews a claim.

Plumbing vs. gas: why gas is treated more strictly

Both are licensed trades, but gas carries additional safety weight. Floodwater can compromise gas appliances and controls; reconnecting or replacing them without a permit and inspection risks leaks, carbon monoxide, and fire. If a gas appliance has been submerged or exposed to floodwater, treat it as work for a licensed gas fitter under permit — not a do-it-yourself reconnection.

Documentation: why the paperwork is the point

For a data-and-logistics audience, the permit’s real value is the paper trail:

• Resale. Unpermitted plumbing or gas work surfaces during inspections and title work and can derail a sale or force retroactive permitting.
• Insurance. Insurers may scrutinize whether repair work was permitted and inspected; unpermitted work can complicate a future claim.
• Safety accountability. The inspection record is independent confirmation that the installation met code.

The first-24-hours checklist covers how to document the loss itself; this page covers documenting the repair.

Where to go next

• The full permit decision matrix: DC permits & licensing
• Tear-out and structural work: demolition & construction permits
• Confirm the trade is licensed: verify a DC contractor’s license
• Service-connection work (tap, meter, backflow): DC Water permits