Foundation repair tools

Use estimating tools for one purpose: sanity-checking a quote you have already received. If a bid says twelve helical piers, you can check whether the total is consistent with published per-pier ranges. If the arithmetic does not work, ask why.

Be honest with yourself about the input you do not have. Every calculator asks for the number of piers or the square footage affected. That input is the diagnosis, and it is the thing you are trying to determine. Feeding a contractor's number into a calculator just returns the contractor's number.

The tool that actually reduces uncertainty is not a calculator. It is a structural engineer at $400 to $1,500 per Today's Homeowner, or, at zero cost, your own dated photographs over six months showing whether anything is changing.

If you are comparing bids, build a simple table instead: method, unit count, unit price, area treated, exclusions, warranty terms, permit responsibility. Bids that cannot fill in that table are bids you cannot compare.

How to choose

Use calculators to check bids, not to make decisions

They multiply. They do not diagnose.

Never enter a number you got from the seller

If the pier count comes from the company bidding the job, the output is their estimate with extra steps.

Build a comparison table instead

Method, count, unit price, area, exclusions, warranty, permits. Same columns for every bid.

Budget for the unknowns

Interior cosmetic repair, landscaping and hardscape restoration are frequently excluded from quotes and from calculators.