A foundation repair contractor measures, prices and performs work. A licensed structural engineer issues a stamped opinion and does not sell the repair. Some contractors employ or retain engineers; the roles stay separate even then.

What gets measured on a Phoenix property either way

Whoever holds the instrument, the readings are the same: relative floor elevations across the slab, where each was taken, and the date. Here the median house was built in 1984 and the median value is $381,900, which is the sum a lender’s request for an engineer’s letter is usually protecting. An engineer interprets the readings against a standard and signs; a contractor interprets them against a repair method and quotes. The numbers underneath do not change.

The reasoning behind that

The practical difference is independence and licensure. An engineer’s stamped letter is a professional opinion issued by someone with no financial interest in the repair being large. A contractor’s report is a measurement and a proposal from the party that would carry out the work. Both can be perfectly honest, and they are not interchangeable documents. Which you need is usually decided by someone else. Lenders, insurers and buyers often ask for an engineer’s letter by name. A contractor’s report will not close that request, however thorough it is. Ask for the requirement in writing before buying either. Where a contractor retains an engineer, ask whose name is on the document and whether that engineer inspected the property. A design reviewed by an engineer and a property inspected by one are different things. This site is neither, and it performs no work of its own — which is precisely why it can tell you the distinction plainly.

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