Why two quotes for the same house differ
Almost always because they have scoped different work, not because one provider is honest and the other is not.
A proposal is a description of a plan. Different providers arrive at different plans based on what they measured, what method they favor, how conservatively they interpret the evidence, and what they habitually include or exclude. The total at the bottom is the output of all those decisions, which is why it is the least informative number in the document.
This guide is a worksheet for reading the rest of it.
The comparison worksheet
Take both proposals and fill this in for each. Where a box cannot be filled because the document does not say, that absence is itself a finding.
| Item | What to record | Why it matters |
|---|---|---|
| Assessment | Was an elevation survey done? Is it attached? | A scope without measurement is a guess |
| Method | Named system: driven steel, pressed concrete, other | Methods differ in reach and cost |
| Quantity | Number of supports and their locations | Biggest source of price variance |
| Depth basis | Driven to refusal? How is deeper-than-expected handled? | Protects you from mid-job surprises |
| Interior work | Any work inside the house, and its restoration | Far more disruptive and costly |
| Inclusions | Every operation the price covers | Defines the actual product |
| Exclusions | What is explicitly not covered | Where the change orders come from |
| Associated work | Plumbing testing, drainage, void grouting | Often needed, often omitted |
| Permits | Who applies, who pays | Varies by jurisdiction |
| Schedule | Expected duration and what extends it | Access, weather, inspections |
| Warranty | Duration, triggers, exclusions, transferability | Frequently the real difference |
| Payment | Deposit, stages, final | Large upfront deposits deserve scrutiny |
The four questions that reveal the most
“What measurement supports this pier count?” The answer should reference a relative elevation survey and the load path of the structure. “Experience” and “that’s what a house this size needs” are not measurements. If a provider can walk you through why each location is on the plan, that tells you a great deal.
“What is not included in this price?” A clear written answer is the single most useful thing you can extract. Restoration, landscaping, concrete replacement, interior cosmetic repair, masonry repointing, plumbing testing, and drainage work are the usual omissions.
“What would have to be true for you to recommend no repair?” A provider who can answer this has a threshold. One who cannot has a product to sell regardless of what the evidence shows.
“Can I see the written warranty terms, not the summary?” The headline word — lifetime, transferable — is marketing. The document defines what is covered, what triggers a claim, what voids it, and what happens when the house changes hands. See the warranty guide for what to look for.
Red flags worth taking seriously
A quote produced without a site visit. Pier counts from photographs or phone calls are commercial estimates, not assessments.
A scope with no exclusions section. Every real scope has boundaries. A document that does not state them has left them to be discovered.
Pressure on timing. Discounts that expire, warnings about what happens if you wait, and today-only pricing are sales techniques. Foundation movement that has taken years to develop does not become urgent on a Tuesday afternoon.
A large deposit before work starts. Staged payment tied to progress is normal; a substantial proportion of the total up front deserves questions.
Refusal to put something in writing. Anything described verbally that does not appear in the document does not exist.
Diagnosis from appearance alone. “That crack means you need piers” is not an assessment. Crack width in particular is not a threshold, however confidently it is presented as one.
A useful reframe
You are not choosing a price. You are choosing a scope, a method, a warranty, and a company that will be reachable in five years if something goes wrong. The price is the consequence of those choices, not the choice itself.
When the quotes are simply describing different houses
Occasionally two proposals differ because the providers reached genuinely different conclusions about what is happening. One reads the elevation pattern as settlement needing underpinning; another reads it as heave and proposes addressing moisture instead.
That is not a pricing disagreement, it is a diagnostic one, and it will not be resolved by comparing documents. This is where an independent foundation evaluation or a licensed Professional Engineer’s assessment earns its cost — an opinion from someone who is not selling the repair.
Before you get there, read the cost drivers guide so the numbers in front of you are legible. Most of the time, that is enough to see what each provider is actually proposing.