Do you need a permit to replace a roof?

Maybe. In Howard County, the building code lets you put a new covering on an existing single-family house without a permit, as long as the job has no structural repairs. Rotted wood, framing fixes, a different kind of house or a historic street can change that answer, so it pays to check before the crew shows up.

The short version

• Single-family house, new shingles only: the county code exempts it from a building permit.
• Replace more than 64 square feet of roof sheathing, or fix the framing, and a permit comes into play.
• Historic districts and neighborhood covenants have their own approval, separate from the county permit.
• Our roof installation price includes permits and the final inspection, passed through at cost.
• When a permit is needed, Howard County takes a few days to 2 weeks.

Does a roof replacement need a permit in Howard County?

For a single-family house with a straight swap of the roof covering, the county code says no. Howard County’s building code amendments list replacement of roof coverings (opens in a new tab) with no other structural repairs as work exempt from a permit on existing single-family dwellings. The “roof covering” is the shingles and the layers that go under them.

Here is the annoying part. Not every county handout says the same thing. An older county sheet from 2019 for its same-day permit counter lists “Roof replacements” (opens in a new tab) under typical residential alterations, with a filing fee. The code changed after that sheet was printed, but it shows why a neighbor, a roofer and a website can each give you a different answer.

Rules get updated. Treat this article as the starting point, then confirm your address with the county’s Inspections, Licenses and Permits office before you sign anything.

When does a roof job need a permit anyway?

A permit comes into play the moment the job goes past swapping the covering. The county exemption has a limit: it covers up to 64 square feet of roof sheathing (opens in a new tab). Sheathing, also called decking, is the wood sheets under the shingles. One sheet is 4 feet by 8 feet, or 32 square feet, so 64 square feet is two sheets.

That limit is easy to pass. We can’t see the wood until the old shingles are off. Decking replacement is priced per sheet after tear-off, typically $70 to $150 installed, and a roof that has leaked for years can need far more than two. Our roof decking article explains what bad decking looks like.

Framing is the bigger one. If the tear-off shows a sagging ridge, undersized rafters or failed truss plates, the job needs an engineer’s letter, typically $600 to $1,500, and the permit has to be revised. Those cases also add days to weeks of delay.

What else can stop a roof job besides the county?

Two other groups can say no or slow you down, and neither one is the county permit office.

• Historic districts. Old Ellicott City sits inside a local historic district. A roof replacement there went through the county’s application for a Certificate of Approval (opens in a new tab), and the same record shows the commission looking at the roofing material. Review by the Historic Preservation Commission typically adds months and limits which materials you can pick.
• HOA and village covenants. In covenant-controlled neighborhoods such as Turf Valley, Font Hill and the Columbia villages, architectural review can add 30 to 45 days. A county permit does not replace it.

Check both before you sign. A contract signed first and a “no” from the board second is a bad order to learn things in.

How long does a permit take, and who pays for it?

When one is required, the permit is usually one of the shorter delays. For Howard County it takes a few days to 2 weeks, and the whole job, from signature to final inspection, typically runs 2 to 6 weeks.

The cost of the permit and final inspection is part of our roof installation, and we pass it through at cost. It is not a markup. If a quote from anyone else leaves permits out, ask whether you will be billed for them later, because the fees are sometimes passed through separately.

Should you pull the permit yourself or let the roofer?

Let the roofer deal with it. The roofer sees the wood when the old shingles come off, so they know early whether the job has crossed the line, and they can revise the paperwork if it has.

Whoever pulls it, ask these questions up front:

• Does my house need one, and what is that based on?
• Is the fee in the price, or added later?
• Who books the final inspection?
• What happens to the price if the decking is worse than it looks?

A contractor who shrugs at all four is telling you something. You can also see how the day itself goes in what happens on roof replacement day.

Common questions

Do I need a permit to repair a few shingles?

Not under the county exemption. That exemption covers replacing roof coverings, so replacing a few shingles is smaller than the job it describes. A roof repair that stays on the surface is a service call, not a permit job.

Can I skip the permit and not tell anyone?

If your house needs one, no. The rules are the county’s, not ours or your roofer’s. Ask the county first and you will know which side of the line you are on.

Does a townhouse follow the same rule?

Do not assume it does. The exemption we found is written for existing single-family dwellings. A townhouse or other type of home can have different requirements, so ask the county about that address.

Who do I call to check?

Call the county’s Inspections, Licenses and Permits office. Its page lists the Online Permitting System (opens in a new tab) for applications, and phone numbers for questions about code requirements.

What to do next

Not sure whether your roof is a covering-only swap or has wood problems under it? A free roof inspection is the quickest way to find out what is likely under the shingles before anyone writes a price.