How to Compare Foundation Repair Estimates

Why the lowest bid isn't automatically the best one

Two estimates for the same house can differ significantly not because one contractor is overcharging, but because they are proposing different scopes of work. One bid might include full restoration and permitting, while another only covers the structural fix and leaves patching to the homeowner. Comparing totals without comparing scope leads to decisions based on incomplete information.

The goal when reviewing multiple estimates is to normalise them — put each proposal's actual included work side by side — before looking at price at all.

How to normalise scope between bids

• Confirm the repair method proposed for each bid — for example, helical piers versus push piers, or interior versus exterior drainage — since methods carry different cost and disruption profiles.
• Check whether each estimate proposes the same number of piers or anchors, and if not, ask each contractor to explain their reasoning.
• Compare what restoration is included — concrete replacement, regrading, interior patching — and whether it is bundled or left to the homeowner.
• Check whether engineering review or permitting is included in the estimate or treated as a separate cost.

What every estimate should itemise

• The specific repair method and materials proposed.
• The number of piers, anchors, or linear feet of drainage involved.
• Excavation or demolition scope, and what areas of the property are affected.
• Restoration work included after the structural repair is complete.
• Warranty terms and what they cover.
• Any anticipated permit or engineering review requirements.

Red flags worth pausing over

• An estimate with no breakdown — just a single total with no explanation of scope.
• Pressure to sign the same day, especially paired with a discount that expires immediately.
• A contractor who has not physically inspected the property offering a firm number.
• Vague warranty language that does not specify duration, transferability, or what is covered.
• A significant outlier bid, either much higher or much lower, without a clear explanation for the difference in scope or method.

Warranty questions worth asking

• What specifically does the warranty cover — the repair method, the materials, or both?
• Is the warranty transferable to a future homeowner if the property is sold?
• What would void the warranty, and are there maintenance expectations tied to it?
• Is the warranty backed by the company performing the work, or a third party?

Next step

Once you have normalised scope, itemisation, and warranty terms across your estimates, the comparison becomes far more useful than looking at bottom-line numbers alone. If you're still early in the process and haven't gathered questions for your contractor conversations yet, our guide on questions to ask a foundation contractor covers that ground in more depth. From there, request a written, itemised estimate for your own property to start the comparison.