Permit Required? Required
Typical Fee Range $200–$800 Based on construction value plus individual trade permit fees.
Fee Method Valuation-based
Apply Online Apply at Department of Buildings →

What's Required in Washington

  • Plan showing bathroom layout and fixture placement.
  • Plumbing permit for all fixture changes (tub, shower, toilet).
  • Electrical permit for GFCI outlets and lighting.
  • Waterproofing verification for shower pans and surrounds.
  • Exhaust fan installation (mechanical permit may be required).
  • Lead-safe work practices if the home was built before 1978.

How to Get a Bathroom Remodel Permit in Washington

1

Step 1: Concept Layout

Identify if any walls or plumbing stacks are being moved.

2

Step 2: Sub-Permit Filing

Plumbing and Electrical contractors must file sub-permits via Access DC.

3

Step 3: Building Permit Application

Apply for the general alteration permit for the structural/wall work.

4

Step 4: Close-In Inspections

Inspectors must see the 'rough' plumbing and electrical before tiling starts.

5

Step 5: Final Sign-off

Final inspection of all fixtures, venting, and electrical safety.

Frequently Asked Questions

Replacing a toilet in the same location usually does not require a permit, but moving it does.
It is an inspection done when pipes and wires are visible, before they are covered by drywall or tile.
Yes, unless the bathroom has a window that meets specific size requirements for ventilation.