Boise Roof Permit Guide
Yes, you need a permit to replace a roof in Boise. The City requires permit type 428 — Residential Roofing, Siding and Windows — and your contractor normally pulls it as part of the job.
This comes up on r/Boise regularly and gets a half-answer. Here’s the full one.
Key takeaways
Permit type 428 covers residential roofing, siding and windows
Your contractor normally pulls it — but confirm, don’t assume
The same application caps your roof at a maximum of two layers
Under Idaho Code 54-5205, the building department must request a contractor registration number before issuing
Homeowners can pull their own permit, but must physically do the work themselves
Meridian, Nampa, Caldwell and Eagle each run their own separate process
What needs a permit?
Needs one: full roof replacement · tear-off and reroof · re-covering an existing roof · structural repair to the roof deck or framing
Generally doesn’t: small repairs · replacing a handful of shingles · pipe boot replacement · flashing repair · gutter work
The line isn’t always obvious. A repair that grows into re-covering a whole plane may cross it. If you’re unsure, ask — a permit costs far less than an unpermitted roof discovered during a home sale.
Who pulls the permit?
Normally your contractor. It’s part of a properly quoted job, and the fee should appear on your estimate rather than as a surprise.
Idaho Code 54-5205 requires the building department to ask for a contractor registration number before issuing a permit. If a permit is issued to someone exempt from registration, it must conspicuously state that no contractor registration was provided.
That’s a useful piece of consumer protection: the permit itself records whether a registered contractor is doing the work.
Homeowners can pull their own permit for work on their own property — but the homeowner must physically perform the work. You can’t pull an owner permit and hand the job to an unregistered crew.
If a roofer says you don’t need a permit
Treat it as a signal. Either they’re mistaken about the rules in the city they work in, or they’re avoiding the inspection. Neither is what you want on a roof you’ll own for twenty years.
The two-layer cap
The City of Boise permit application caps roofing at a maximum of two layers.
Practically, that means:
One existing layer → you may be able to go over it
Two existing layers → full tear-off, no exceptions
This is the biggest cost surprise on Bench and North End homes, where a second layer often went on decades ago. Tear-off and disposal is a real line item, and it changes the number materially.
Important: satellite and aerial measuring tools cannot tell how many layers are on your roof. Anyone quoting from an image is guessing at the single biggest variable in your price. It takes someone physically lifting an edge.
What inspectors check
Requirements worth knowing before the inspection, not after:
Ice and water shield extending 24 inches upslope past the exterior heated wall line — and 36 inches on pitches of 8/12 and steeper
Low-slope and flat sections designed to a minimum 25 psf snow load
Layer count within the two-layer cap
Manufacturer specification — deviation can fail inspection and void the material warranty even if the roof looks fine
WUI requirements if you’re in the foothills overlay — Class A covering or assembly
What it costs and how long it takes
Permit fees are set by the current Ada County / City of Boise fee schedule and change periodically — check the city’s published schedule rather than relying on a figure you read online, including this one.
For a straightforward residential reroof, permitting is not usually what holds up a job. Weather is.
Other Treasure Valley cities
Ada County doesn’t run one process. Each incorporated city runs its own permitting, with its own requirements, fees and inspection processes:
Boise · Meridian · Eagle · Kuna · Star · Garden City — and Nampa, Caldwell and Middleton over in Canyon County. Unincorporated Ada County is different again.
FAQs
Do I need a permit for a roof repair in Boise?
Small repairs generally don’t. Re-covering or replacing does.
What is permit 428?
The City of Boise permit type covering Residential Roofing, Siding and Windows.
Can I pull my own roof permit as a homeowner?
Yes, for your own property — but you must physically do the work yourself.
What happens if my roof was replaced without a permit?
It typically surfaces during a home sale or an insurance claim. Unpermitted work can complicate both. It’s usually resolvable, but it’s a headache you’d rather not inherit.
Does the permit fee appear on my estimate?
It should. Ask if it doesn’t.
Need a roofer in Boise?
We’ll come out, get on the roof, photograph everything, and hand you a written scope and estimate. No obligation, no pressure, no expiring discount.