How to Compare Foundation Repair Quotes the Right Way
Foundation repair quotes can differ widely, and the FTC says to ask why. Line up scope, pier counts and warranty to see what each bid really covers.
Table of Contents
Why foundation repair quotes rarely match
Two or three foundation repair quotes that don’t match can feel impossible to judge. The totals differ because the quotes often describe different work, quantities, or terms.
- Quotes in hand: use the six lines below.
- Quotes to come: ask every contractor for the same six lines in writing.
- Price ranges first: see foundation repair costs by problem.
We can’t pick your contractor, but we can help you compare fairly.
ℹ️ Safety Note: Structural repairs carry risk of injury and major damage. This guide compares paperwork; it isn’t engineering or legal advice. Hire a licensed structural engineer or contractor, and follow local code and permit requirements.
How to compare foundation repair quotes: six lines
Compare quotes by checking six lines on each: scope, diagnosis, unit prices, inclusions, warranty, and payment.
The six lines at a glance
| Line | Find on each quote | Red flag |
|---|---|---|
| Scope | Method per area | None named |
| Diagnosis | Who inspected; cause found | Sales visit only |
| Unit prices | Price per unit × units | One lump sum |
| Inclusions | Permits, engineering, restoration | Silence |
| Warranty | Coverage, length, transfer | Verbal only |
| Payment | Deposit, schedule, contract | Full payment up front |
Our free quote-comparison worksheet lays these six lines side by side.
How many quotes to get
Get written quotes from at least three companies, as the FTC and This Old House advise. A written estimate should describe the work, materials, completion date, and price, per the FTC.
Why the cheapest isn’t automatic
The FTC says not to pick the lowest bidder by default, and to ask why estimates differ.
Check that every quote fixes the same problem
Prices mean nothing until each quote fixes the same problem.
Who diagnosed the problem
Ask whether a licensed engineer or a salesperson inspected. North Carolina’s engineering board guidelines say a licensed engineer should decide whether a foundation has failed and design the repair; other states differ.
Same cause, same method
Each quote should name the cause, such as water pressure or soil movement, and the repair method.
Pier type and count in writing
Quotes may name push piers and helical piers, which install differently. Get the pier count in writing; an engineer judges whether it’s right.
✅ Do This: If quotes name different causes or methods, hire a licensed structural engineer to review them before you sign.
Compare unit prices, not just the bottom line
A lump sum hides how many units you’re buying and what comes with them.
Unit price × quantity
List each item as price per unit × units. Illustrative numbers, not real quotes: A is 6 piers at $1,500 ($9,000); B is 8 piers at $1,250 ($10,000). B costs more overall but less per pier, so ask why the counts differ.
What’s in and what’s out
Compare permits, engineering, excavation, landscaping restoration, and how change orders are priced. If a quote is silent, ask.
Water-control lines
For drains or sump work, see how to compare basement waterproofing quotes.
Read the warranty before you read the price
A low price with a thin warranty can cost more later.
Transferable and manufacturer’s warranty
This Old House’s review methodology treats a transferable warranty as a plus and also looks for a manufacturer’s warranty. Transferability can matter if you sell.
What it actually covers
Ask whether it covers the product, the workmanship, or future movement, and for how long. Those are different promises.
Get it in writing
Request the full warranty document with each quote, not a verbal summary. Ask what voids it, who honors it if the company closes, and how to file a claim.
Contract, deposit and license: the last line
The last line is paperwork. The FTC’s home improvement scam guidance is the clearest checklist.
License and insurance
Consider only licensed and insured contractors; confirm the license with your state or county and ask for proof of insurance.
Deposit and payment
Don’t pay the full amount up front; some states cap the down payment. Pressure to decide now, cash-only terms, or being asked to pull permits are FTC scam signs.
What the contract must say
It should list the contractor’s name, address, phone, license number, dates, and every verbal promise. If you sign at home, it should state your right to cancel within three business days.
✅ Do This: Call your state or local consumer protection office about deposit limits, and have an attorney review a large contract.
When foundation repair quotes still disagree
When quotes still disagree, get one neutral scope and have everyone bid on it.
Get one independent scope
A structural engineer’s report gives every contractor the same scope to price. Angi’s inspection guide says it includes photos, a diagnosis, designs, and repair scope, with a typical visit around $400 to $700.
When a quote says replace
Replacement is a far larger job; have an engineer confirm it first, and see foundation replacement cost.
✅ Do This: Hire a licensed structural engineer who doesn’t sell repairs, and ask for a written scope each contractor can bid on.
Foundation repair quote questions, answered
1. How do you compare foundation repair quotes?
To compare foundation repair quotes, check six lines on each: scope, diagnosis, unit prices, inclusions, warranty, and payment.
2. How many foundation repair quotes should I get?
Get written foundation repair quotes from at least three companies so you can compare scope and price fairly.
3. Why are foundation repair quotes so different?
Foundation repair quotes often cover different methods, quantities, inclusions, or warranties; ask each contractor to explain any big gap.
4. What should a foundation repair estimate include?
A written foundation repair estimate should describe the work and materials, give a completion date, and state the price, per the FTC.
5. Should I choose the cheapest foundation repair quote?
Not automatically; the FTC says to ask why foundation repair estimates differ before choosing the lowest bidder.
6. How much deposit should I pay a foundation contractor?
Never the full foundation repair price up front; some states cap down payments, so check your state or local consumer agency.
7. Is a foundation repair warranty transferable?
This Old House treats transferability as a plus, so ask whether each foundation repair warranty passes to a buyer.
8. How do I know how many piers I need?
Get the foundation repair pier type and count in writing, then have a licensed structural engineer judge them.
9. Do I need an engineer’s report to compare quotes?
An engineer’s report helps compare foundation repair quotes: one written scope lets every contractor bid on the same work. Hire a licensed structural engineer.
10. What are red flags in a foundation repair quote?
Foundation repair red flags: pressure to decide now, cash-only terms, full payment up front, or being asked to pull permits, per the FTC.
Your next step with your foundation repair quotes
Fill in the six lines for each quote, call every contractor back about the gaps, and get an independent engineer’s scope if the quotes still disagree. Don’t sign until the contract, deposit, and warranty are on paper.
Our free quote-comparison worksheet puts all six lines side by side.
