Do you need a permit to remodel a bathroom in Boise?

Short version: if concealed plumbing is disturbed or wiring is added, you need a permit. Swapping a faucet or repainting, you don’t. Most real bathroom remodels land on the permit side of that line, and the homeowners who get burned are usually the ones who never knew the line existed.

What the City of Boise actually requires

The City of Boise’s homeowner guidance is specific. A plumbing permit is required for most bathroom remodels when fixtures are replaced and concealed plumbing work is involved — new supply lines, a moved drain, a shower pan going in. An electrical permit is required when electrical fixtures are added, which includes the smoke alarms that get triggered by a building permit, added lighting, and the GFCI protection a modern bathroom needs.

Cosmetic work generally doesn’t need one. New paint, a mirror, a towel bar, a like-for-like faucet swap where nothing opens up — that’s maintenance.

The grey area is the tub-to-shower conversion. It looks cosmetic from the doorway and it isn’t: the drain usually moves, framing gets corrected, and the waterproofing is entirely new. That’s permit work.

What the inspector is looking at

Rough-in inspection happens after the plumbing and electrical are in and before anything is covered. That timing is the point — once tile is on, nobody can see whether the drain is vented properly or the supply lines are sized right.

An inspector is checking the boring, structural things: drain slope and venting, supply line material and support, GFCI protection, fan ducted to the outside rather than into the attic, and that nothing load-bearing was cut without being headed off.

None of that is visible in the finished room. All of it decides whether the room lasts.

Why a bid that skips permits is a red flag

Permits cost money and time. A contractor who leaves them out of the bid comes in cheaper on paper, and you carry the risk in three ways:

• Resale. Unpermitted work shows up in disclosure and inspection. Buyers discount for it, or ask you to open the wall.
• Insurance. A water claim traced to unpermitted plumbing is an argument you may not win.
• No second set of eyes. The inspection is a free check on your contractor’s work. Skipping it means the only person confirming the job was done right is the person who did it.

If you’re comparing bids, ask each one flatly: are permits included, and who pulls them? The answers will separate the bids faster than the totals do.

How we handle it

We pull the permits on every job that requires them and schedule the inspections ourselves. It’s in the written quote as a line, not an asterisk, and the inspection dates go into the schedule you get before we start — because a rough-in that waits three days for an inspector is three days of your bathroom sitting open, and you deserve to know that up front.

Working through this yourself? What a remodel costs in Boise covers the money side in detail — or call (208) 247-7364 and we'll talk it through.