Understand your foundation repair estimate before you sign

Ask the contractor to identify the foundation type, affected rooms or walls, observed damage, and evidence supporting the proposed cause. A useful assessment separates settlement, soil heave, inward wall movement, deteriorated supports, and water entry instead of calling every symptom a sinking foundation.

Request dated photographs and a plan showing crack locations and floor elevation readings where relevant. Elevation differences document the floor shape on that visit; without construction records or repeat measurements, they do not establish when movement happened. Ask what remains uncertain and whether plumbing evaluation, soil investigation, or monitoring could change the scope.

When proposals disagree about the cause or recommend major structural work, consider an independent structural engineer who is not selling the installation. Ask for a repair objective: stop further movement, attempt a controlled lift, reinforce a wall, or seal a leak. These are not interchangeable outcomes.

Repair method and quantity matter, but access and ground conditions can change the work just as much. Exterior excavation beside an open lawn is different from reaching an interior footing beneath a finished room. Identify concrete cutting, crawlspace clearance, equipment access, landscaping removal, and disposal before comparing totals.

For underpinning, ask how the proposed system transfers the building load to suitable bearing material. The estimate needs a defined pier or pile system, bracket connection, layout, and installation acceptance criteria. Depth is a subsurface uncertainty: request the included depth or allowance and the written method for authorizing added extensions or a changed design.

For basement walls, separate reinforcement from excavation, anchors, and any attempt to straighten the wall. For slab lifting, distinguish filling a void beneath a nonstructural slab from supporting a load-bearing foundation. Ask which of these conditions the contractor actually found at your house.

Look for a drawing tied to itemized quantities. Every pier, reinforced wall segment, injected crack, or replacement support should have an identifiable location. For a pier-and-beam foundation, distinguish replacement posts and footings from shims, beam repairs, and joist work; a promise to level the floors does not describe those repairs.

If lifting is proposed, request the intended result and stopping criteria. Stabilization does not necessarily include lifting, and lifting does not promise that doors, brick joints, or interior cracks will return to their prior positions. Put responsibility for plumbing checks and damage to finishes in writing before work starts.

Treat drainage as its own scope. Building Science Corporation explains that surface runoff and groundwater require coordinated control. Specify grading, downspout discharge, drain routing, and sump discharge where proposed. A sealed crack does not by itself address water accumulating against a wall.

Build a comparison using the affected footprint, diagnosis, repair objective, support layout, included depth assumptions, restoration, and completion records. More piers do not automatically mean a stronger proposal; ask each contractor to explain the spacing and loads for the chosen system.

Keep structural work, water management, and finish repairs separate. One estimate may include concrete replacement and drainage while another excludes them. Mark allowances and optional work explicitly. Ask each bidder to explain omissions against the same drawing rather than asking only for a lower total.

If one proposal calls for crack sealing and another calls for underpinning, resolve the diagnostic disagreement first. A price comparison cannot establish whether either repair is appropriate. Use Henry Check to identify questions in the written scope, then obtain the missing technical explanation.

Licensing and permit rules vary by state/city. Confirm contractor credentials with the relevant government agency, and ask your building department what this specific structural repair requires. Austin, for example, lists qualifying foundation repairs under its residential express permit process; that is not a nationwide rule.

Write down who supplies engineered documents, obtains permits, schedules inspections, and delivers final approvals when required. Coordinate any plumbing work associated with lifting or accessing the foundation. Do not accept an unsupported statement that no permit is needed simply because the work is beneath the house.

The FTC recommends written estimates and contracts and warns against paying the entire project amount upfront. Deposit rules vary by state/city. Tie progress payments to defined foundation work, such as completed supports and documented installation, rather than a vague percentage complete. Require written authorization before additional depth, hidden footing repairs, or other changes proceed.

Request installation records appropriate to the system: support locations, final depths, helical installation torque where specified, testing records where required, and before-and-after elevations if lifting occurred. Manufacturer instructions are system-specific; the CHANCE underpinning instructions, for example, specify compatible brackets and pile components. Ask which instructions and design govern your installation.

Obtain the actual warranty document before signing. Identify whether it covers installed supports, future adjustment labor, water entry, or only specified materials. Ask about exclusions for soil movement, drainage, plumbing leaks, and repairs by others. Get any transfer conditions, maintenance obligations, service charges, and claim procedure in writing rather than relying on a lifetime label.

The completion package should also identify remaining work: backfill, concrete patches, drain testing, cleanup, and any engineer or building department sign-off included in the contract. Record who handles follow-up measurements and what change would trigger another inspection.