Permit Required? Required
Typical Fee Range $50–$150 Building permit fees for decks are standard for residential units.
Fee Method Flat fee
Apply Online Apply at Department of Permits, Approvals and Inspections →

What's Required in Baltimore

  • Building permit required for decks greater than 16 inches above grade.
  • Permit required for any deck exceeding 120 square feet.
  • Site plan required for all decks under 600 square feet.
  • Construction plans required for decks 600 square feet and over.
  • Signed and sealed professional plans required for decks over 3,000 square feet.
  • Always required if in a Historic District or floodplain.

How to Get a Deck Permit in Baltimore

1

Step 1: Prepare Documents

Gather site plan and construction drawings based on deck size.

2

Step 2: Create Application

Apply through the PAI online portal.

3

Step 3: Upload Plans

Upload required drawings to the Plan Documents tab.

4

Step 4: Plan Review

Staff review plans for structural and zoning compliance.

5

Step 5: Pay Fees

Pay calculated fees once the technical review is completed.

Frequently Asked Questions

Only if it is more than 16 inches above grade or in a historic area.
Only for decks larger than 3,000 square feet.
Decks less than 16 inches above grade are generally exempt unless in restricted areas.