How to quote a bathroom remodel as a remodeling contractor

Bathroom remodels look straightforward on paper: tear out the old stuff, put in the new stuff. In practice, you're coordinating four or five different trade categories — demo, plumbing, electrical, tile, drywall, and paint — often in a space so small that every phase blocks the next. Most contractors who undercharge on bathroom remodels don't miss the tile cost. They miss what happens when the rough-in plumbing is corroded, the electrical panel is already maxed out, or the subfloor is softer than expected. This guide walks you through writing a bathroom remodel quote that accounts for each trade layer, builds in a realistic contingency, and protects your margin when the job turns sideways.

Why bathroom remodels eat margin faster than any other job

A kitchen remodel is obviously complex. A bathroom remodel looks simpler — the rooms are small — but that's exactly the problem. Homeowners have lower price expectations per square foot than the job actually warrants, and the work density in a 60-square-foot space is brutal: your plumber, electrician, and tile setter are all fighting over the same six inches of wall cavity.

The other trap is scope creep. Homeowners routinely add fixtures mid-project ("while you're at it, can we move the toilet six inches?"), and without a signed change order process, those additions cost you real hours at no additional pay. Before you write a single number on your quote, commit to a change order workflow — here's a practical template for writing change orders that protect your margin.

Step 1 — Break the bathroom remodel into trade cost buckets

Don't estimate a bathroom remodel as a lump sum until you've built the number from the bottom up. Start by identifying every trade category involved and estimating hours for each.

For a typical full bathroom gut-to-finish, the trade categories are:

1. Demo and haul-away. Usually one to two days for a single crew member: pulling tile, removing drywall, disconnecting fixtures, disposing of debris. Don't let demo look cheap — it's where you discover what the walls are hiding.

2. Rough-in plumbing. Drain-waste-vent adjustments and supply line rough-in. According to the U.S. Bureau of Labor Statistics' Occupational Employment and Wage Statistics, May 2025, the national median hourly wage for plumbers and pipefitters is $34.70. A smooth rough-in runs 8–12 hours; corroded drain lines or venting complications can push it past 20 hours.

3. Rough-in electrical. A GFCI circuit, exhaust fan wiring, and recessed lighting if requested. The BLS OEWS May 2025 release puts the national median hourly wage for electricians at $34.37. Budget 4–8 hours for a standard bathroom; more if you're adding a heated floor circuit or a dedicated vanity circuit.

4. Tile and waterproofing. Shower surround, floor tile, and backer board installation. Waterproofing the shower pan correctly is non-negotiable — a callback on a leaking shower costs far more than the extra hour to do it right.

5. Drywall and paint. Finishing non-tile walls, the ceiling, and trimwork. Don't underestimate paint in a bathroom: cuts around fixtures and tile edges take longer per square foot than an open bedroom wall.

6. Fixture installation. Vanity, toilet, tub or shower unit, mirrors, towel bars, and accessories. Finish plumbing often takes a half to a full day once the tile is fully cured.

Step 2 — Price materials with the right markup

Once you've got trade hours nailed down, price materials for each phase separately. Common materials in a full bathroom remodel include:

• Tile and grout (floor and shower surround)
• Waterproofing membrane and cement backer board
• Drywall and joint compound
• Vanity, sink, faucet, and mirror
• Toilet
• Tub or shower unit
• Supply lines, shutoffs, and fittings
• Electrical boxes, wire, GFCI outlets, and exhaust fan
• Paint, primer, and trim

For each line item, note your actual cost and apply a consistent markup before building the customer price. The markup calculator at /tools/markup-calculator lets you enter your material cost and target margin to calculate what to present to the customer. A 30–40% markup on materials is common for remodeling contractors, but the right number depends on your overhead structure. For the full breakdown on how to calculate it, see our post on how to calculate markup on a contractor quote.

What to include in your bathroom remodel estimate

A complete line-item estimate prevents budget surprises and gives you a defensible record if the customer disputes scope later. Include every item below as its own line — or group related items, but never lump the whole job into a single number.

Showing these separately also speeds up the estimate conversation — a customer who wants to cut budget can see exactly which lines to reduce instead of asking you to "just knock off 10 percent."

How to set your contingency and allowances

The contingency line is where contractors often try to win the bid by cutting corners. Don't. According to the National Association of the Remodeling Industry's Remodeling Impact Report, a midrange bathroom remodel consistently ranks among the top interior remodeling projects for resale value — homeowners who push hard on your price are optimizing for the wrong number.

For the contingency itself, use these thresholds:

• Cosmetic update, no layout changes: 10% contingency
• Full gut with layout changes: 15–20% contingency
• Pre-1980 home: Add an extra 5% on top for code compliance discoveries — outdated wiring, galvanized supply pipes, insufficient venting, or missing GFCIs that weren't required at original construction

Allowances work differently than contingency. An allowance is a placeholder for a finish the customer hasn't selected yet: "$1,000 tile allowance for shower surround." When the customer selects tile that costs $1,400, that's an automatic change order — not a favor you owe them. Write it that way in the contract.

How to handle subcontractors in your bathroom remodel quote

If you're the GC but not the licensed plumber or electrician, you're managing subs. Your quote should include each sub's price plus your markup for coordinating their work. A typical contractor markup on subcontractor labor runs 10–20%, depending on coordination complexity and the risk you're absorbing if the sub misses their schedule.

Before finalizing your customer quote, nail down these three things with each sub:

1. Get their quote in writing. A phone estimate from a sub that later changes puts you in a bad spot. Even a short text confirmation of a flat price locks them in.
2. Build their schedule into your timeline. Subs are often the critical path. If your tile setter can't start because the plumber is two days behind, you're paying for idle days.
3. Route all change orders through you. Write it into your contract that any scope changes to subcontracted work require your written approval before the sub touches anything new. Homeowners who go around you to ask the plumber "while you're here" end up on your bill.

If you're using the same sub on multiple jobs, build a standing rate card with them. Re-quoting the same work from scratch on every project wastes time for both of you.

Also see our guide on how to write a plumbing estimate if you're doing the plumbing yourself — a full bathroom remodel adds some nuances compared to a service-only call.

Takeaways

• Break every bathroom remodel quote into trade buckets before you write a single number — demo, plumbing, electrical, tile, drywall, paint, and fixtures as separate lines
• Use BLS median hourly wages as your floor, not your ceiling; your actual field rate needs to cover overhead that national medians don't reflect
• Set allowances for any unselected finish item; unspecified allowances become arguments at the end of the job
• Contingency is not padding — it's how you absorb unknowns without calling the customer for more money mid-project
• A signed change order process stops scope creep before it starts, especially on trades where the customer has the sub's direct number

Putting your first bathroom remodel quote together

If you've never formally quoted a bathroom remodel at this level of detail, the first one takes the longest — but the line-item template pays for itself by the second job. JobEstimator helps remodeling contractors build structured estimates for exactly this kind of multi-phase project: pull in your trade rates, apply consistent markup across labor and materials, and produce a clean quote the customer can actually read and approve. Plans start at $39/mo, with no per-quote fee and no contract.