Quick answer: A useful contractor estimate spells out the scope of work, allowances, exclusions, assumptions, expected timing, payment terms, and how changes will be handled. If two quotes differ substantially, compare their contents before assuming the lowest price represents the same work.
You've had two or three contractors out to your house. Now you're holding quotes that look nothing alike: one is a single line with a big number, another runs four pages, and the prices are $15,000 apart. Which one do you trust?
I bring 30+ years of building and remodeling experience, including general contracting work in California, and I’m now licensed in Tennessee. When comparing estimates for homes in Portland, Gallatin, Hendersonville, and surrounding communities, I look beyond the total. Here’s how to distinguish a clear proposal from an incomplete one.
The seven parts of a reliable estimate
1. A clear scope of work.
The scope says exactly what will be done, room by room or phase by phase. "Remodel bathroom" is not a scope. "Remove existing tub and surround, install curbless tile shower with linear drain, waterproof walls and floor, replace vanity and toilet, add exhaust fan vented to exterior" is.
2. Allowances for finishes, in real dollar amounts.
If you haven’t selected tile, fixtures, or countertops, an allowance is an amount included for an item that has not been fully chosen. Ask what it covers, whether installation is separate, and how an overage or credit will be handled. Compare it with the products you actually want.
3. Exclusions, stated plainly.
What's not included matters as much as what is. Common exclusions: permit fees, appliance installation, painting outside the work area, repairs to hidden damage, and moving furniture. A reliable estimate lists them so nobody is surprised.
4. Labor and material assumptions.
Good estimates say what they assume: that the subfloor is sound, that the existing wiring meets code, that the wall being removed isn't load-bearing. If an assumption turns out to be wrong, you'll know exactly why the price changed.
5. A realistic timeline.
Look for a start window, an estimated duration, and what could affect it, such as material lead times, inspections, or weather for exterior work in Middle Tennessee.
6. A written change-order process.
Changes happen. You decide on a bigger window, or we open a wall and find rot. A reliable estimate explains how changes are priced and approved, in writing, before the work is done.
7. A clear payment schedule.
Agree in writing on the deposit, material payments, and progress milestones. Confirm applicable limits on advance payments, and be cautious about requests for most of the price before work begins.
Fixed price and cost-plus: understand the contract
| Consideration | Fixed-price contract | Cost-plus / time and materials |
|---|---|---|
| Pricing basis | An agreed price for a defined scope | Documented costs or time, plus agreed fees or rates |
| What to clarify | Allowances, exclusions, assumptions, and change orders | Rates, markups, records, reporting, and any agreed cap |
| Price changes | As permitted by the contract and approved changes | Actual costs and the contract terms |
| Best comparison | The same defined work and assumptions | The same scope and documented pricing method |
An estimate is a forecast, not a contract type. Either a fixed-price or a cost-plus arrangement can be clearly documented. Ask what is binding, how actual costs are tracked, and which events may change the total.
Why the lowest quote deserves a closer look
When one quote is far below the others, check whether any of these differences explain it:
- Allowances are set too low for the finishes you actually want
- Permits, disposal, or prep work are left out
- Hidden-damage risk is ignored instead of planned for
- Required licensing, insurance, or supervision is not accounted for
A lower bid is not proof of poor work or dishonesty. Different scopes, methods, overhead, or omissions can explain a difference. Ask for clarification and compare equivalent work.
Questions to ask about any estimate
- What exactly is included, and what isn't?
- What do the allowances buy, and where?
- What happens if you find damage behind a wall?
- How are changes priced and approved?
- When do you start, and how long will it take?
- Who is on site day to day, and how will you update me?
Start with a clear conversation
Before agreeing to work, discuss how the estimate will be prepared and what it will include. A walkthrough, accurate measurements, clear selections, and an honest discussion of the budget help establish a useful scope. Brown Dog Builders offers free quotes and free walkthroughs. Schedule a free walkthrough to discuss your project with Cory.
Ask about conditions that could change the cost, such as hidden moisture damage or existing electrical work. Record assumptions in the proposal and agree on how discoveries will be priced and approved.
Frequently asked questions
Should a contractor estimate be free?
Brown Dog Builders offers free quotes and free walkthroughs. Schedule a free walkthrough to talk through your space and the work you have in mind. When comparing other contractors, ask about their estimating policies before scheduling.
Why are my contractor quotes so different?
Usually because they cover different scopes, allowances, or assumptions. Line them up side by side and ask each contractor to clarify what's included.
What is a change order?
A written agreement to change the original scope, with the added or reduced cost and any timeline impact, signed before the extra work begins.
How much contingency should I plan for on a remodel?
We recommend setting aside 10–20% of your project budget as a contingency for unforeseen conditions or design changes you choose along the way. Discuss the right amount for your scope with Cory, and approve changes and their costs in writing before the extra work begins.
Helpful Tennessee resources
Licensing information checked October 10, 2026. Confirm current rules and local requirements for your specific project.
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