Roofing Permits and Code in the Kansas City Metro

The Kansas City area isn't one building department. It's Kansas City, Missouri, and Kansas City, Kansas, plus dozens of separate cities spread across Jackson, Clay, Platte and Cass counties in Missouri and Johnson, Wyandotte, Leavenworth and other counties in Kansas. Unincorporated areas fall under county rules. Every one of them decides for itself whether a reroof needs a permit, what it costs, and whether anybody comes out to look.

Most adopt some edition of the International Residential Code, then amend it. Two houses a mile apart can sit under different editions with different local changes. A contractor who works the whole metro has to keep track of that. A homeowner shouldn't have to.

A full tear-off and replacement almost always requires one. So does a re-cover, where new shingles go over an existing layer, in the cities that still allow it. Replacing decking as part of a reroof is usually covered by the same permit.

Repairs are where it gets uneven. Swapping a handful of blown-off shingles or replacing a pipe boot often doesn't need a permit. Some cities set the line by square footage, some by dollar value, and some by whether the decking gets touched. When we quote a roof repair, we check the rule for that address. Commercial work is a separate track, with plan review in many cities. Our commercial roofing page covers that side.

Code items aren't upsells. They're the minimums the city will hold the roof to, and a few of them change the scope in ways homeowners notice.

• Layers. The residential code doesn't allow a new layer over a roof that already has two layers, or over one that's water-soaked or deteriorated. If your house has two layers now, it's a full tear-off.
• Drip edge. Asphalt shingle roofs need metal drip edge at the eaves and rakes under the current code. Older roofs often went without it.
• Underlayment. The deck gets covered before the shingles go on. Your city's code and the manufacturer's instructions set what type and how it's lapped.
• Ice barrier. Where the local code calls for it, a self-adhering membrane runs up from the eave past the warm wall line, which is a direct defense against ice dams.
• Fastening. Shingles go on with the nail count and placement the code and the manufacturer specify. Nails driven too high are a common failure point.

Attic ventilation is also addressed in the code, and it's the item most often ignored on cheap reroofs. Our ventilation page covers what a balanced system looks like.

This varies more than anything else on the list. Some cities do one final inspection after the job is done and look at what's visible from the ground or a ladder. Others want a mid-roof inspection, or photos of the underlayment and ice barrier before the shingles cover them. A few don't inspect residential reroofs at all and treat the permit as a registration.

When a city wants an inspection partway through, it changes how the crew schedules the day. We plan around it. Our roof replacement timeline walks through how a typical job runs from tear-off to cleanup.

The contractor's. When a homeowner pulls a permit for work someone else is doing, the homeowner usually becomes the responsible party in the city's eyes. If a roofer asks you to go down to city hall and pull it yourself, ask why. Often it's because they aren't registered or licensed where your house is.

On our jobs, permitting is our responsibility. The fee is set by the city and belongs in the written estimate, so it doesn't show up later as an extra.

A building permit doesn't replace your homeowners association's approval. Many subdivisions on both sides of the metro restrict shingle color or style and want an architectural request submitted before work starts. Get that approval in hand first. A permit is easy to get compared to tearing off a roof the HOA won't accept.

When hail hits a large part of the metro, permit offices get busy along with everyone else. Permits still get pulled. Emergency tarping to stop water coming in doesn't wait for paperwork, and the permanent repair or replacement gets permitted the normal way once the house is dried in.