Foundation inspection: three different jobs, one word

Decide which of the three roles you actually need

If you want a document you can act on and hand to bidders, that is a structural engineer. If you want a free second look and are comfortable filtering the sales layer, a repair contractor works. If you are buying a house and need a whole-property baseline, a home inspector comes first and refers on.

Watch for: Booking a "free foundation inspection" when what you needed was a report. The visit will happen, the conversation will be useful, and at the end you will have a proposal rather than an assessment.

Confirm the independence of whoever you hire to assess

Independence has a specific meaning here: no ownership relationship, no referral fee, no repair contract, no share of the work resulting from the finding. Ask it as a direct question and accept only a direct answer.

Watch for: Firms that both engineer and install. Some are perfectly reputable, but you cannot get an independent check on a proposal from the party that stands to perform it — that is what independent means.

The walk-through: exterior, interior, and below

A thorough visit covers grade and drainage around the whole perimeter, the visible foundation face, the crawl space or basement, and the interior symptoms — doors, floors, wall openings, trim separations. Access matters: locked crawl hatches and finished basements limit what can be seen.

Watch for: An assessment done entirely from inside, or entirely from outside. Foundations are diagnosed by connecting what the soil is doing to what the walls are doing, and half the evidence lives at each end.

Measurement, not just observation

Relative floor elevations are commonly taken across the whole floor plan with a level instrument, producing numbers rather than impressions. Crack locations and orientations get recorded. The value of this step is that it creates a baseline somebody can repeat later.

Watch for: A visit with no measurements taken at all. Without numbers, nothing about today can be compared with next spring, and "it is getting worse" stays an argument instead of a finding.

The written report and what it should contain

A useful engineer's report describes the observed conditions, the measurements taken, the likely cause, the engineer's opinion on whether the condition is active, and a recommendation — which may be repair, further investigation, or monitoring. Recommendations are often written by performance objective rather than by brand.

Watch for: A report that names one contractor's proprietary product as the required solution. A scope written by performance — what the repair must achieve — is what lets you bid it competitively.

Hand the same scope to every bidder

This is the practical payoff of paying for the assessment. Three contractors pricing one written scope produce three comparable numbers. Three contractors each writing their own scope produce three different projects that happen to have prices attached.

Watch for: A bidder who wants to "re-evaluate" and substitute their own scope. Some genuinely have a better idea; ask them to write the difference down and explain it, rather than quietly quoting something else.

Monitoring, if that is the recommendation

Crack monitors fixed across a crack record relative movement over months. A repeat elevation survey compares the floor to its earlier baseline. Photographs on a fixed schedule, in fixed positions, do a surprising amount of the same work for free.

Watch for: Treating monitoring as doing nothing. It is a deliberate diagnostic period with a defined end point — set the review date when you start, or it quietly becomes forgetting about it.