A civil engineering firm is who you call when a project needs the ground tested, the drainage worked out, or a site plan a building department will actually accept. Fees come either hourly or as a percentage of construction cost, and the percentage form is the one that catches people out: on residential work the design fee alone can run 5 to 20 percent of the build. Ask which basis you are being quoted on before anything else.
| Service | Typical |
|---|---|
| Engineering consultant, hourlyNational range | $125 to $200 per hour |
| Structural engineer, hourlyNational range | $100 to $150 per hour |
| Land surveyNational range | $345 to $675 per job |
| Soil testing before constructionNational range | $500 to $1,000 per job |
Ranges last checked September 2026. They come down automatically when they are due to be rechecked.
Every figure above comes from a named source we can link to, with the date we last checked it. We publish ranges rather than single prices because a range is what a provider will actually give you: the same job moves with what is being worked on, the materials, how hard it is to get at and how busy the trade is locally. Treat these as the order of magnitude to expect before you call, not as a quote.
The figures here are national. Where a source publishes figures state by state, the state pages carry that local figure instead of this one. We do not scale a national number by a multiplier of our own invention.
Every range carries a review date. When that date passes the number comes down until it is rechecked, rather than sitting here undated.
Engineering and design work is quoted three ways: an hourly rate, a fixed fee for a defined deliverable, or a percentage of the construction cost. Two firms quoting on different bases cannot be compared at all, and the percentage form is the one that moves most, because it rises with a budget you have not finalized yet.
Ask for the basis first and then ask what happens when the scope changes. On an hourly engagement, a request from the building department is billable time. On a fixed fee, whether it is billable depends on how tightly the deliverable was written.
Professional engineers, architects and land surveyors are licensed individually by state boards, and firms are often registered separately. That means a check has two halves: the company, and the named individual who will stamp your drawings. A stamp is a personal legal act, so the person matters as much as the letterhead.
Larger firms hold civil design, survey, geotechnical work and construction inspection in one place, and the handoffs between those disciplines then happen internally rather than across three contracts. That is a real advantage on a complicated site.
The trade-off is worth naming before it is agreed rather than after. When the same firm both designs the work and inspects it being built, the party checking the work is the party that specified it. Owners on larger projects sometimes retain their own representative for exactly that reason.
Start with what the building department actually requires, because that is the deliverable you are buying. A stamped site plan, a drainage calculation and a geotechnical report are three different products and not every firm produces all three.
Ask who does the work and who signs it. A firm may subcontract survey or soils to a specialist, which is normal, but you should know it before the invoice arrives with a line you did not expect.
Check the individual license as well as the firm, through the state board that issues it. Most publish a searchable register that returns status and any discipline record.
Three ways: an hourly rate, a fixed fee for a defined deliverable, or a percentage of the construction cost. The table above carries the current hourly and per-job ranges. Two firms quoting on different bases cannot be compared, so establish the basis before anything else.
That the fee rises with a budget you may not have finalized. On residential work the design fee alone can run 5 to 20 percent of the build, which is why the basis of the quote matters more than the headline number.
It depends what the building department asks for. A stamped site plan, a drainage calculation and a geotechnical report are three separate products, and not every firm produces all three. Ask the department first, then buy to that list.
Through the state board that licenses professional engineers, architects and land surveyors. Licenses are held by individuals and firms are often registered separately, so check both the company and the named person who will stamp your drawings.
It is a trade-off rather than a problem. Holding design, survey, geotechnical and inspection in one place removes the handoffs between them. It also means the party checking the work specified it, which is why owners on larger projects sometimes retain their own representative.