Do I need a permit for an HVAC changeout in Washington?

In most District of Columbia jurisdictions, including Washington, a mechanical permit is required for equipment changeouts even when the replacement is like-for-like. Confirm with the Washington building department before starting work.

How long does a Washington permit take?

Over-the-counter trade permits such as mechanical, plumbing and re-roof are often issued the same day when the application is complete. Structural work that needs plan review takes longer. Complete, legible applications are the single biggest factor in same-day issuance.

Can RapidPermit Systems submit the Washington permit for me?

No. We produce the completed, print-ready application; you file it with the Washington building department and pay its fees.

RapidPermit Systems

Washington, DC permit applications

Working in Washington? Save your contractor license, insurance and bond details once, then produce a complete application for the next Washington job — building, mechanical, re-roof or plumbing — in under a minute, plus the OSHA paperwork your crew needs on site.

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Washington permits by trade

Who pulls it, what the packet contains, and the inspection sequence — per trade.

Roofing permits in Washington HVAC permits in Washington Plumbing permits in Washington Electrical permits in Washington Windows & doors permits in Washington Siding permits in Washington Gutters permits in Washington Remodeling permits in Washington General contracting permits in Washington Demolition permits in Washington

What a Washington permit costs

Estimate the fee by trade and job value before you sign the work, and see the lines crews forget to quote.

Washington permit cost estimator

Washington inspection sequence

The order of calls by trade, what each inspector checks, and the failure that sends crews back most often.

Washington inspection guide

Documents Washington contractors generate most

Who reviews the permit in Washington

This city runs its own building department — confirm the property sits inside city limits before filing with the county instead.

Files with

DC Department of Buildings

Department page

Online portal: DC PermitDC / ProjectDox

A DC-licensed contractor and DC business license are required to pull permits.

Electronic plan review is required for most permit types.

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One page covering the forms, attachments and inspection sequence Washington contractors get held up on.

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Filing checklist for Washington

Verify whether the property sits inside Washington city limits or in unincorporated District of Columbia — that determines which department accepts the application.
Bring current general liability and workers' compensation certificates.
Match declared valuation to the signed contract amount.
Confirm whether the scope triggers a separate electrical, mechanical or plumbing permit pulled by a licensed sub.
Schedule required inspections before covering any work.

Other District of Columbia metros

General guidance for Washington contractors, not legal advice. Confirm requirements and fees with the authority having jurisdiction.

Keep going

Washington by trade

Roofing HVAC Plumbing Electrical Windows & doors Siding Gutters Remodeling General contracting Demolition Permit costs Inspection sequence

Nearby states

Delaware permits Florida permits