Permit Required? Sometimes Required
Typical Fee Range $150–$500 Required if 50% or more of the sheathing/decking is being replaced.
Fee Method Flat fee
Apply Online Apply at Department of Permits, Approvals and Inspections →

What's Required in Baltimore

  • Permit required if replacing 50% or more of roof sheathing or decking.
  • Required for replacement of any structural roof components.
  • Mandatory for all roof work in Historic Districts or on Landmarks.
  • Flashing must extend to exterior wall finish or water barrier.
  • Licensed contractor must be used for permitted work.
  • Water-resistant barrier (e.g., Tyvek) must be used.

Do You Need a Permit to Replace a Roof in Baltimore

In almost every case, yes — a full roof replacement (a tear-off and re-cover, or a complete reroof) requires a building permit in Baltimore, issued by the Department of Permits, Approvals and Inspections. Replacing the roof covering is regulated work because it affects the structure’s weather envelope and, on a tear-off, exposes the sheathing for inspection. A licensed roofing contractor usually pulls the permit, and an inspection may be required after the old material is removed and again at completion. Permit-free roofing is generally limited to minor repairs — not a whole-roof replacement.

Roof Repair vs. Replacement: When You Need a Permit in Baltimore

The dividing line in Baltimore is usually the scope of work. Small repairs — patching a leak, swapping a few damaged shingles, or fixing flashing — often don’t require a permit. A full replacement, a tear-off down to the deck, adding a second layer over the old shingles, or any change to the roof structure (rafters, trusses, sheathing) generally does. Some cities also cap how much roof area you can repair before it counts as a replacement. Because that threshold and any wind- or fire-zone rules vary, confirm the cutoff with the Department of Permits, Approvals and Inspections — the requirements above list what Baltimore expects.

How to Get a Roof Replacement Permit in Baltimore

1

Step 1: Evaluate Scope

Determine if sheathing replacement will exceed 50%.

2

Step 2: Check Landmarks

Verify if property is on the Landmarks List or in a Historic District.

3

Step 3: Online Filing

Apply through the Roofing and Siding category in the portal.

4

Step 4: Upload Docs

Provide scope of work and contractor license info.

5

Step 5: Inspection

Schedule a final building inspection to verify flashing and code compliance.

Frequently Asked Questions

No, unless you are replacing structural parts or 50%+ of the sheathing.
A permit is required for any roof work regardless of scope.
Yes, flashing must meet specific exterior drainage standards.
Small repairs — patching a leak, replacing a few shingles, or fixing flashing — usually don’t need a permit in Baltimore, while a full replacement, tear-off, added shingle layer, or structural change does. Some cities cap the repairable area before it’s treated as a replacement; check with the Department of Permits, Approvals and Inspections.