How to Plan a Bathroom Remodel in the Right Order

Before you call anyone, mark where the toilet, shower or tub, and sink drains sit today, then decide which of them are moving. That answer sets your plumbing scope, probably your permit requirements, and a large share of your cost, all before you look at a tile sample. This is the order that keeps the decisions from colliding:

1. Define the scope and layout.
2. Check permit and code triggers with your building department.
3. Set a budget with a contingency.
4. Collect bids against one written scope.
5. Order long-lead items and confirm their dimensions.
6. Demolish, then rough in plumbing and electrical and pass inspection.
7. Waterproof, tile, and install fixtures.
8. Pass final inspection and finish the punch list.

What Should I Decide First in a Bathroom Remodel?

Decide whether your fixtures stay where they are, because that choice sets the plumbing and electrical scope for everything after it. Most projects fall into one of three tiers: a refresh (new surfaces and fixtures in the same spots), a remodel in place (same footprint, but a new vanity size or a tub swapped for a walk-in shower), or a layout change.

Layout changes are where the money goes. Moving a toilet means relocating a 3- or 4-inch drain and its vent, often cutting into floor joists, or breaking up the floor on a concrete slab. Expect a moved fixture to add a few thousand dollars in plumbing alone, more over a slab or on a second floor. Local labor rates and how the house was built drive the spread.

Our recommendation for the most common situation: keep the toilet and the wet wall where they are, and put the savings into the shower, waterproofing, and ventilation. Move a fixture only when the layout fails a real need, like a door that hits the vanity or a shower too narrow to use.

Check clearances while you sketch. Model codes commonly call for at least 15 inches from the toilet centerline to the nearest wall or fixture, 21 inches of clear space in front, and a shower interior of at least 30 by 30 inches. Your jurisdiction may differ. A pocket door can free up swing space in a tight room, but it needs a wall with no pipes or wiring inside.

Do I Need a Permit for a Bathroom Remodel?

Usually yes if you move plumbing, add or change electrical circuits, alter walls, or change windows or venting, and usually no for cosmetic swaps, but your local building department makes the call. Rules vary by city and county, so ask before you collect bids.

Typical triggers include relocating a drain or supply line, adding a circuit for a heated floor or new lighting, moving or removing a wall, and running a new exhaust fan duct. Swapping a vanity, toilet, or faucet in the same spot often needs none. The International Code Council publishes model codes that many states and localities adopt, and you can browse them at iccsafe.org, but your local amendments are what count.

Settle this early, because a permit adds inspection stops to the schedule and fees to the bid. Unpermitted work can also complicate insurance claims and a future home sale. Bathrooms generally need GFCI protection on receptacles and a fan vented to the outdoors, not into an attic.

How Much Does a Bathroom Remodel Cost?

A full bathroom remodel typically costs about $12,000 to $35,000, with a simple refresh below that and a primary bath with layout changes well above it. Region, bathroom size, and finish level drive most of the difference.

The table shows a rough planning split, not a benchmark. Your bids will shift the shares, especially if the shower is tile-heavy or the plumbing moves.

Add a contingency of 15 to 20 percent on top, and go higher for houses built before about 1960, where opening a wall can reveal rot, old galvanized pipe, or cloth-wrapped wiring. Plan on spending some of it.

Spend on waterproofing, the shower valve, and ventilation, because they sit behind finished surfaces and cost the most to redo. Save on accessories, mirrors, and decorative lighting, which swap out easily later.

How Long Does a Bathroom Remodel Take?

Plan on two to six weeks to design and order, then roughly three to eight weeks of on-site work for a full gut remodel, with long lead times on custom items a common source of delay. A cosmetic refresh can wrap up in one to two weeks.

Trades work in a fixed order: demolition, rough plumbing and electrical, inspection, framing and waterproofing, tile, then fixtures, trim, and glass. Each step waits on the one before it, so one late delivery stalls everyone. The lead times below are rough and vary by maker, so get written ship dates.

The item that surprises people is frameless shower glass. The fabricator measures after the tile is finished, then cuts the glass to fit. That leaves a gap near the end of the job when the room looks done but the shower isn't usable.

When Should I Choose Tile, Vanity, and Finishes?

Choose fixtures and anything with rough-in dimensions first, then tile and surface finishes, because the first group fixes where pipes, wiring, and blocking go. Pick finishes first and you may have to change them when the rough-in doesn't fit.

Lock in early: the shower valve and trim, a freestanding tub or wall-hung vanity (which needs blocking in the wall), niche locations, a heated floor, and light and fan positions. Your plumber and electrician need exact specs before they cut.

Once rough-in is done, tile choices are safer. For floors and shower floors, look for porcelain tile with a slip-resistance rating suited to wet areas. Large-format tile looks clean but demands a flatter substrate, which adds prep cost. Under it all, a proper waterproofing membrane in the shower matters more than the tile on top.

Size the exhaust fan to the room. A common rule for rooms up to about 100 square feet is 1 cubic foot per minute per square foot of floor, with a 50 CFM minimum, and a quiet, efficient model is worth the small premium. ENERGY STAR certifies bathroom ventilation fans if you want a starting point.

How to Hire a Bathroom Remodeler and Compare Bids

Hire a licensed, insured contractor whose written bid itemizes scope, allowances, permits, and payment schedule, then compare bids line by line. Give each bidder the same one-page scope: fixture locations, shower size, permit expectations, and the materials you've chosen.

Bids written on different scopes aren't comparable, and the lowest number often just means something was left out. Check each bid for:

• License and insurance, verified with your state licensing board, plus liability and workers' comp coverage.
• Lead-safe certification if the house predates 1978.
• Who pulls the permit and schedules inspections.
• Allowances for tile, fixtures, and vanity, and whether they're realistic for what you picked.
• The waterproofing system, named specifically.
• Demolition, disposal, and subfloor repair: included, or extra?
• Change order process, start date, estimated duration, and warranty terms, all in writing.

Tie payments to completed milestones, not dates, and hold the final payment until the punch list is done. Deposit limits differ by state. The FTC's consumer advice site has guidance on home improvement contracts and scams, and it's worth a read before you sign.

How Do I Live Through a Bathroom Remodel?

Plan on losing the bathroom for the whole on-site period, so line up a backup toilet and shower and agree on water shutoff windows before work starts. In a one-bath house this is the hardest part, and it deserves a real plan.

Ask how long water will be off on demolition and rough-in days and how dust will be contained, usually with plastic barriers and a covered floor path. Decide where the crew parks, which door they use, and where materials are stored.

Inspections affect the schedule too. Plumbing and electrical rough-in typically must pass before walls are closed, and inspector availability varies by area, from next day to a week or more. Build in slack, and don't let anyone cover rough-in work until the inspector signs off.

Your next step this week: sketch the room with current fixture positions, mark which ones might move, and call your building department to ask what permits that scope triggers.