How to Write a Bathroom Remodel Proposal That Actually Wins Jobs

Last month I lost a $28,000 bathroom job to a guy who charged $4,000 more than me. The homeowner told me later: "His proposal just felt more professional." That stung—but it taught me everything I know about writing proposals that close.

The Real Reason Most Proposals Fail

I've reviewed hundreds of contractor proposals over the years. The #1 problem? They're vague. "Demo existing bathroom" doesn't tell a homeowner anything. Demo what? Down to studs? What about the subfloor? The window trim?

When your proposal is vague, homeowners assume two things: (1) you haven't thought it through, and (2) you're going to hit them with change orders later. Neither wins you the job.

The 7 Sections Every Bathroom Proposal Needs

Here's my exact framework. I've used this on over 200 bathroom jobs ranging from $8K powder room refreshes to $65K master bath gut-renos.

1. Project Summary (2-3 sentences)

State exactly what you're doing in plain English. Example: "Complete gut renovation of master bathroom including new tile shower with linear drain, freestanding soaking tub, double vanity, and heated floors. All new plumbing fixtures and electrical."

2. Demolition Scope

Be surgical here. List every single thing you're removing:

• Remove existing vanity, countertop, and plumbing connections
• Remove toilet and cap waste line
• Remove tub/shower unit including drain assembly
• Demo tile flooring down to subfloor (verify condition)
• Remove drywall in wet areas to studs
• Leave window frame in place (see exclusions)
• Haul all debris—included in price, no extra dump fees

That last line matters. I've seen guys lose jobs because homeowners assumed they'd have a dumpster in their driveway for a month.

3. Rough-In Work (Plumbing & Electrical)

This is where most proposals fall apart. You need to specify:

Plumbing: - Install new 2" drain for shower with linear drain conversion - Move water supply lines 18" left for new vanity location - Rough-in for freestanding tub (deck-mount filler) - New angle stops at all fixtures

Electrical: - Install dedicated 20A circuit for bathroom - Add GFCI protection at vanity (NEC 2023 compliant) - Rough-in for heated floor thermostat - Relocate existing exhaust fan to shower area

4. Installation Scope (The Meat)

This section should read like a recipe. Be specific:

Shower: - Cement board substrate on all walls - Kerdi waterproofing membrane (10-year warranty) - 12×24 porcelain tile on walls—Client Selection from ABC Tile ($8/sf allowance) - 2×2 mosaic floor tile with linear drain - Frameless glass enclosure (by others—see exclusions) Flooring: - Schluter Ditra-Heat electric system (45 sf) - Programmable thermostat with floor sensor - Same 12×24 tile as shower walls Fixtures: - 60" Kohler Underscore freestanding tub (Model K-1136-0) - Riobel deck-mount tub filler in brushed nickel - Kohler Cimarron toilet (comfort height, elongated) - 60" double vanity—Client providing

Notice I include model numbers where I know them. This prevents the "I thought I was getting the nicer one" conversation.

5. Materials & Allowances

Break this out clearly. Homeowners appreciate knowing where their money goes:

Included Materials: - Cement board, Kerdi membrane, thin-set, grout - All plumbing rough-in materials (PEX, fittings, valves) - Electrical wire, boxes, GFCI receptacles - Ditra-Heat mat and thermostat Client-Provided (installed by us): - Vanity cabinet - Countertop (installed by fabricator) Allowances: - Tile: $2,400 ($8/sf × 300 sf) - Plumbing fixtures (faucets, showerhead): $1,200 - Light fixtures: $600 Total allowance: $4,200. Overages billed at cost + 15%. Credits issued for underages.

6. Timeline & Payment Schedule

Give real dates, not "4-6 weeks."

Schedule: - Demo & rough-in: Jan 15-19 (5 days) - Inspections: Jan 22 - Tile & waterproofing: Jan 23-Feb 2 (8 days including cure time) - Fixture install: Feb 5-9 (4 days) - Final punch & walkthrough: Feb 12

Payments: - 30% at contract signing ($9,450) - 30% at rough-in inspection ($9,450) - 30% at tile completion ($9,450) - 10% at final walkthrough ($3,150)

7. What's NOT Included

This section saves you from scope creep and awkward conversations:

Exclusions: - Permit fees (typically $350-500 in this county) - Frameless glass shower enclosure (recommend ABC Glass, ~$1,800) - Countertop fabrication and install - Painting (we prep only) - Mold remediation if discovered (will quote separately) - Window replacement - Any work outside bathroom footprint

A Real Pricing Example

Here's how I'd price a typical master bath gut-reno in the Denver metro area (adjust 15-20% for coastal markets):

Round it to $27,500 or $28,000 depending on your market. This math is transparent—homeowners can see exactly how you got there.

The Mistakes I See Every Week

After 15 years, these still kill proposals:

• "Materials TBD" — Feels like you're hiding something. Even if you don't know exact selections, give ranges.
• No permit mention — Homeowners Google and learn permits cost money. Address it upfront.
• Vague timelines — "4-6 weeks" means nothing. If you can't commit to dates, explain why (permit lead times, material ordering).
• Missing warranty info — I guarantee labor for 2 years, manufacturer warranties pass through. Say it.
• Handwritten on scrap paper — I've literally seen this. In 2024. Use software or at least a typed PDF.

Using Tech to Speed This Up

I used to spend 2-3 hours per proposal. Now I use ScopeGen to get a professional draft in about 10 minutes. The AI knows what to include for each trade, and I customize from there.

The ROI is simple: if it takes me 15 minutes instead of 2 hours, I can bid on 8x more jobs. Even if my close rate stays flat, that's a lot more work.

Quick Proposal Checklist

Before you send any bathroom proposal, verify you've covered:

• [ ] Project summary in plain English
• [ ] Every demo item listed
• [ ] Plumbing scope with fixture locations
• [ ] Electrical with circuit/outlet details
• [ ] All tile specified with allowance amounts
• [ ] Fixture makes/models where known
• [ ] Realistic timeline with dates
• [ ] Payment schedule totaling 100%
• [ ] Clear exclusions list
• [ ] Your warranty terms
• [ ] Contact info and license number

Print this out and tape it to your wall. Seriously.

Bottom Line

A bathroom proposal isn't paperwork—it's a sales tool. The more specific you are, the more professional you appear, and the more trust you build. Homeowners will pay more for a contractor they trust to do the job right.

Start with this framework, customize it for your trade and market, and watch your close rate climb.