Permit Required? Required
Typical Fee Range $150–$500 Fees are calculated based on the estimated cost of construction plus a technology fee.
Fee Method Valuation-based
Apply Online Apply at Department of Buildings →

What's Required in Washington

  • Structural plans showing footings, joist spacing, and ledger attachments.
  • Plat of Survey showing the deck footprint and distances to property lines.
  • Deck must not exceed 20% lot occupancy if in certain residential zones.
  • Railing height must be a minimum of 36 inches.
  • Stair geometry must meet DC Building Code (Max rise 8.25", Min tread 9").
  • Post-hole depth must reach the 30-inch frost line.

How to Get a Deck Permit in Washington

1

Step 1: Site Plan

Draw a site plan showing the deck dimensions and its relation to the house and lot lines.

2

Step 2: Structural Review

Submit detailed construction drawings for a building code compliance review.

3

Step 3: Online Submission

Upload all documents to the Access DC portal for electronic plan review.

4

Step 4: Permit Issuance

Pay final fees and print your permit to be displayed at the job site.

5

Step 5: Footing & Final Inspections

You must have footings inspected before pouring concrete, followed by a final structural inspection.

Frequently Asked Questions

Only if the window is not a required emergency egress for a bedroom.
A permit is not required for a simple concrete or paver patio on grade, but is required for any raised wood deck.
Residential deck reviews typically take 10-15 business days through the standard online portal.