Bathroom rough-in checklist

Rough in a bathroom right: drains and valves, the fan and lights, blocking and the shower base, before tile and drywall.

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Bathroom rough-in checklist

koira.ai/checklists/bathroom-rough-in-checklist
Plumbing
Electrical and air
Structure
Record

What this checklist covers

Bathrooms pack the most trades into the smallest room. The two most common rough-in mistakes are a shower valve set at the wrong depth for its trim and a missing grab bar backing. Both are cheap now and hard later.

How to use it

Tick each item as you go. The sheet saves in this browser, so you can close the page and come back. Print a blank copy for the truck, or fill it in on your phone and print or save it as a PDF for the customer at the end.

With Koira: Estimates and change orders

Anything the walkthrough turns up that is outside the scope goes on a new estimate, signed on the customer's phone before you do it. Koira keeps the original, the change and the photos together on the job.

Last checked October 9, 2026. This page is general information, not legal or tax advice. Rules change and differ by state and city, so confirm with the agency named before you act.

FAQ

What is roughed in for a bathroom?

Drains, supplies, the shower valve, the fan duct, electrical boxes and circuits, and blocking.

Why check shower valve depth?

The trim kit only fits if the valve sits within the depth its maker allows.

Should a shower pan be tested?

Yes. Flood test it before tile goes on.

Why add blocking?

For grab bars, vanities and accessories, now or later.

We know what works. Leave it to Koira.

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Bathroom Rough-In Checklist: Plumbing, Electrical and Blocking | Koira