Permit Required? Required
Typical Fee Range $75–$150 Standard flat fee for residential re-roofing projects.
Fee Method Flat fee
Apply Online Apply at Building Division →

What's Required in St. Louis

  • Permit required for all complete roof replacements.
  • Maximum of two layers of shingles permitted.
  • Ice and water shield mandatory in valleys and at eaves.
  • Drip edge must be installed on all eaves.
  • Attic ventilation must be maintained per code.
  • Flashing must be replaced or repaired at all wall intersections.

Do You Need a Permit to Replace a Roof in St. Louis

In almost every case, yes — a full roof replacement (a tear-off and re-cover, or a complete reroof) requires a building permit in St. Louis, issued by the Building Division. 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 St. Louis

The dividing line in St. Louis 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 Building Division — the requirements above list what St. Louis expects.

How to Get a Roof Replacement Permit in St. Louis

1

Step 1: Material Selection

Choose asphalt shingles, tile, or metal meeting code standards.

2

Step 2: Apply Online

Most roofing permits can be issued quickly through the portal.

3

Step 3: Pay Fee

Submit the flat residential roofing permit fee.

4

Step 4: Installation

Execute the tear-off and replacement according to code.

5

Step 5: Final Inspection

Inspector checks the flashing, venting, and material layers.

Frequently Asked Questions

Minor patching (under 100 sq ft) generally does not need a permit.
Yes, if you own and occupy the home.
A maximum of two layers of shingles is allowed.
Yes — a full roof replacement or tear-off requires a building permit in St. Louis from the Building Division, and it’s usually pulled by a licensed roofing contractor. Minor repairs (a small patch or a few shingles) are often exempt. Confirm the repair-vs-replacement threshold with the Building Division.