The correct bathroom remodel order of operations is: demolition, rough plumbing, rough electrical, rough-in inspection, insulation (if on an exterior wall), backer board and waterproofing, tile (walls then floor), fixture trim-out, then vanity, mirror, accessories, and a final punch list. The two most common sequencing mistakes are tiling before the rough-in inspection passes and closing drywall before the electrician confirms fixture placement.
A bathroom remodel goes sideways in the order it was built, not the order it was planned. Demo before the drain location is confirmed. Tile before the rough-in inspection passes. A vanity ordered off the demo photos instead of the confirmed dimensions. Every one of those is a sequencing mistake, and every one of them costs a callback or a day of rework. Here's the order that holds up on a real job site, why each step sits where it does, and where bathroom jobs actually go wrong.
The trade sequence, step by step
- Demolition. Strip to studs and subfloor. Pull fixtures first — toilet, vanity, mirror, light fixtures, tub or shower — then wall coverings, tile, backer board, and drywall.
- Rough plumbing. Set supply and drain lines for the new fixture layout. If a drain is moving, this is where the subfloor gets opened to reroute it.
- Rough electrical. Wire the vanity lights, exhaust fan, GFCI outlets, and any in-floor heat before the walls close.
- Rough-in inspection. The inspector checks the open plumbing and electrical before anything gets covered. This is the gate: nothing closes up until it passes.
- Insulation and vapor barrier, if the bathroom sits on an exterior wall.
- Backer board and waterproofing. Cement board on shower walls, a waterproof membrane on every wet surface, drywall everywhere else.
- Tile. Walls and shower surround first, then floor, working from the back of the room toward the door so the last course isn't a corner you've tiled yourself into.
- Fixture trim-out. Plumbing sets the toilet, tub or shower valve trim, and sink faucet; electrical sets the fan, light fixtures, switches, and outlet covers.
- Vanity, mirror, accessories, and the punch list. The final walkthrough where the off caulk line and the crooked outlet cover get caught before the client does.
Why the order is the whole job
Sequencing isn't a nice-to-have; it's what a schedule is actually for. Poor communication and poor project data — which is what a bad sequence produces, since somebody skipped a step nobody agreed to skip — account for 48% of all rework in U.S. construction, a cost of $31.3 billion in a single year, according to a 2018 survey of nearly 600 construction leaders by FMI Corporation and PlanGrid. A bathroom remodel is small enough that an out-of-order step doesn't need a report to show up. It shows up as a torn-out wall three days later.
Terms, defined
- Rough-in: the plumbing and electrical work inside open walls and floor — supply lines, drain lines, wiring — that has to pass inspection before anything covers it.
- Trim-out: the finish plumbing and electrical work after the walls are closed — faucets, fixtures, switch plates, the parts a client actually sees.
- Backer board: cement or fiber-cement board installed over studs in wet areas, under the tile, because drywall doesn't hold up behind a shower.
- Punch list: the final walkthrough list of small fixes — a scuff, a gap, a loose screw — before the job is called done.
Where bathroom jobs actually go sideways
- Tiling before the rough-in inspection passes — if the inspector fails the plumbing, that tile comes back off.
- Ordering the vanity or tub off demo photos instead of confirmed rough dimensions — a half-inch off and it doesn't fit.
- Closing drywall before the electrician confirms fan and light placement — reopening drywall for a moved switch box is a full afternoon lost.
- Skipping the waterproofing membrane to save a day — the callback for a leak six months later costs more than the day did.
This is the kind of sequencing that lives in a foreman's head and a group text, which works fine until the job gets busy or someone's out sick for a week. Lilli, in early access, is built to hold that sequence and the dependencies between steps, so the plan doesn't rely on one person remembering that the rough-in has to pass before the tile goes up.
Questions, answered.
What's the correct order for a bathroom remodel?
Demolition, rough plumbing, rough electrical, rough-in inspection, insulation (if the wall is exterior), backer board and waterproofing, tile (walls first, then floor), fixture trim-out, then vanity, mirror, accessories, and a final punch list.
Can you tile before the rough-in inspection?
No, not safely. The inspector has to see the open plumbing and electrical before anything gets covered, including backer board and tile. Tile first and fail inspection, and that tile comes back out.
How long does bathroom rough-in take?
For a standard remodel with no layout change, rough plumbing and electrical typically run two to four days combined. Scheduling the inspection itself is often the longer wait.
What's the difference between rough-in and trim-out?
Rough-in is the hidden plumbing and electrical work inside open walls and floor that has to pass inspection before it's covered. Trim-out is the finish work after the walls are closed: faucets, fixtures, switch plates, the parts a client actually sees.
Does moving the toilet or shower drain change the sequence?
It doesn't change the order, but it adds a step: opening the subfloor to reroute the drain line before rough plumbing, which usually adds a day and sometimes a second inspection.