The short answer: start with a contractor’s inspection, and add an independent structural engineer when the repair is large, the quotes disagree or the stakes are high. A contractor inspects, explains and prices. An engineer hired separately evaluates and writes a report, and does not sell the repair. We’re not engineers or contractors. This page explains how independent professionals work and does not speak for them.
Side by side
| Contractor’s inspection | Independent structural engineer | |
|---|---|---|
| Who hires them | You, usually to get a quote | You, to get an independent opinion |
| What you get | A diagnosis and a priced repair plan | A written evaluation, and sometimes a repair design |
| Paid for by | Often folded into the repair job | A flat or hourly fee |
| Interest in the repair | Sells the repair | None, if they do not do repairs |
| Typical cost | See the inspection page | HomeGuide: $350–$800 |
A contractor’s inspection is also how the contractor prices the job, which is not a flaw. It does mean the person diagnosing the problem is also the person who would fix it.
When a contractor’s inspection is enough
- The cause is visible: a rotted joist, a settled pier, a leaking downspout.
- The repair is modest and the quotes agree on scope.
- The house is yours and you are not in the middle of a sale.
When an engineer is worth paying for
- The repair is large or the quotes disagree about what is wrong.
- A home inspector flagged foundation cracks or inadequate crawl space support. The NC Real Estate Commission’s buyer brochure says a structural engineer can determine severity and whether repairs are needed.
- You are buying or selling and a lender, buyer or insurer wants a written opinion.
- The county asks for it, such as for unusual foundations or added stories.
- You suspect soil movement. The NC Geological Survey says a geotechnical engineer can identify expansive soils.
What a home inspector can and cannot tell you
North Carolina’s home inspector standards require the inspector to enter underfloor crawl spaces unless access is obstructed or the conditions are dangerous. They must report signs of abnormal water penetration and probe structural components where deterioration is suspected. But the standards say inspections are not technically exhaustive. A report that flags a problem is the beginning of the question. The NC Real Estate Commission notes a crawl space specialist may suggest a fix for moisture and a mold inspector can determine the type and extent of mold.
What it costs
Prices depend on the source. HomeGuide lists a structural engineer’s foundation inspection at $300–$750. HomeAdvisor lists report fees of $340–$780, and This Old House lists $500–$1,000. Homeyou shows $250-$600 for Charlotte, plus an hourly rate for inspection during work. Compare that with a crawl space inspection at $100–$250 per HomeGuide. These pages disagree because they are measuring different scopes.
How to hire an independent engineer
- Look for a professional engineer licensed in North Carolina who does evaluations and does not sell repairs.
- Ask what the report will contain and whether it includes a repair recommendation you can bid out.
- Give them the contractors’ quotes and ask them to comment on scope.
- Keep the report. It also helps if you sell.
Before you sign
- Ask each contractor to put the cause of the problem in writing.
- Get at least three written estimates, as the NC Department of Justice advises.
- Be cautious of a company that arrives at a low advertised price and then points out alarming problems that supposedly need attention right away. NC DOJ warns about that pattern.
Want a contractor to look at it? Call to schedule an inspection.