Low end
$200
Typical range
$200 - $750
High end
$750+
This page covers what a foundation inspection costs and what each price buys. For a walkthrough of the visit itself, see what happens during a foundation inspection.
Foundation Inspection Cost at a Glance
HomeGuide puts the national average at $550, with most homeowners paying $300 to $750 and a full range of about $200 to $1,500. What that money buys depends on who does the work:
| Inspection type | Typical cost | What the price buys | What it leaves out |
|---|---|---|---|
| Contractor assessment | Free to $250 | A practical read and a repair proposal | Independence; a written cause is not guaranteed |
| Home inspection | Part of a $400-$600 home inspection | A visual check of accessible foundation and framing | Engineering analysis, causes, repair costs |
| Dedicated foundation inspection | $300-$750 | Measurements, moisture and support checks, photos, written report | Soil borings and subsurface scanning |
| Structural engineer evaluation | $400-$1,000 | A licensed opinion on cause, severity, and repair approach | The repair itself |
| Geotechnical investigation | $1,000-$5,000 | A soil study for a new foundation or an unusual soil problem | Rarely needed for routine cracks |
Who Performs Foundation Inspections?
Foundation Repair Contractors
Many foundation repair companies offer free or low-cost assessments as part of their sales process. These inspections can be thorough and are performed by experienced field personnel who have seen thousands of foundation conditions.
Advantage: Often free or $50-$150. Experienced, practical assessment. Limitation: Inspector works for a company that sells repairs. Recommendations may not be fully objective.
Cost: $0-$250 (often refunded if you hire them for the repair)
Independent Home Inspectors
A home inspector who includes foundation assessment in their general home inspection provides a broader view but typically does not have the specialized depth of a foundation contractor or structural engineer.
Best for: Buyers in the process of purchasing a home who want a general assessment alongside the full home inspection.
Cost: $400-$600 (for full home inspection including foundation assessment)
What that fee covers is set by the inspector’s standard of practice. Under the American Society of Home Inspectors standard, the inspector checks the readily accessible foundation and framing and describes the method used to inspect the crawlspace. The standard does not require engineering analysis, an opinion on whether the structure is adequate, the cause of a defect, or repair methods and costs. It also excuses the inspector from entering a crawlspace with less than 24 inches of clearance or an access opening smaller than 16 by 24 inches. A foundation note in a home inspection report is a referral, not a diagnosis.
Licensed Structural Engineers
A licensed PE (Professional Engineer) with structural expertise provides the most authoritative assessment of foundation condition. Their report is defensible, suitable for permit applications, insurance claims, and real estate disclosures.
Advantage: Independent, licensed, most credible. Can specify repair method precisely. Limitation: More expensive; may not include repair recommendations (only assessment).
Cost: $400-$1,000 for residential; $800-$3,000 for commercial.
Geotechnical Engineers and Soil Testing
When the question is the soil rather than the structure, a geotechnical engineer tests it. HomeGuide puts a geotechnical survey at $1,000 to $5,000, mostly for new construction. Smaller tests can be added to an ordinary investigation: soil compaction tests run $10 to $100 per sample, and other soil tests $10 to $500 depending on the test. Most homes with cracks and sloping floors never need this tier, and a structural engineer will say so if yours does.
What Changes the Price
Home Size
Most inspectors charge a flat fee that scales with the house. HomeGuide’s national figures:
| Home size | Typical cost |
|---|---|
| 1,000 sq ft | $250-$500 |
| 1,500 sq ft | $375-$750 |
| 2,000 sq ft | $500-$900 |
| 2,500 sq ft | $625-$1,000 |
| 3,000 sq ft | $750-$1,200 |
Foundation Type
Access matters as much as size. A slab can be read from the surface, while a crawlspace means time on hands and knees under the floor.
| Foundation type | Typical cost |
|---|---|
| Concrete slab | $300-$600 |
| Unfinished basement | $350-$700 |
| Crawlspace | $400-$700 |
| Finished basement | $500-$800 |
| Pier and beam | $500-$1,000 |
If an inspection turns up problems under a raised floor, the pier and beam repair cost guide prices the fixes.
Flat Fee or Hourly
Routine inspections are usually flat-rate. For harder cases, some structural engineers bill $100 to $220 an hour, so a long crawlspace investigation or a house with several additions can pass the flat-rate range.
Timing, Location, and Experience
Emergency visits after a storm or flood cost more. Inspectors in high-cost areas and busy real estate markets charge more. A senior engineer bills above a junior one, a premium that can pay for itself on a hard case.
Add-On Reports and Tests
If you want the engineer to design the repair, HomeGuide puts a structural engineer report that determines the repair method at $500 to $3,000. A suspected plumbing leak under a slab calls for a separate leak test (see slab leak repair cost), and suspected voids may call for ground-penetrating radar.
Free vs. Paid Inspections
A free inspection is a sales visit with useful information in it. A paid inspection is a service you own.
| Free contractor assessment | Paid independent inspection | |
|---|---|---|
| Who pays the inspector | The repair company, from repair sales | You, for the report |
| Main deliverable | A repair proposal and price | A written report with findings |
| Floor-level readings | Sometimes, so ask for them | Usually included |
| Stated cause | Not always | Expected, especially from an engineer |
| Repair price | Yes | No, which keeps the diagnosis independent |
| Weight with buyers and insurers | Limited | Stronger with a licensed engineer’s name on it |
Free assessments are worth taking for a practical read and a ballpark price. Ask for the elevation readings and photos in writing, and ask what the contractor believes is causing the movement. Where a contractor charges for the visit and credits the fee toward the repair, the credit only has value if you hire them, so treat the fee as the price of an opinion. For how the two roles differ in detail, see structural engineer vs. foundation repair company.
Worked Cost Examples
These examples price the inspection step for five common situations using the national ranges above. Local quotes set the real number.
| Situation | What to order | Estimated cost |
|---|---|---|
| 1,500 sq ft slab home, hairline cracks, no other symptoms | Free contractor look, or a flat-rate inspection for a written baseline | $0, or $375-$750 |
| Buyer, 2,000 sq ft house, home inspector flagged a horizontal basement crack | Structural engineer evaluation during the inspection period | $500-$900 |
| Owner, 1,800 sq ft pier and beam house, repair bids of $4,000 and $11,000 | Independent engineer evaluation before choosing | $500-$1,000 |
| Owner whose repair needs an engineered plan and a permit | Engineer report specifying the repair, plus a permit at $75-$150 | $575-$3,150 |
| 3,000 sq ft house with additions and complex movement | Engineer billing hourly, 4 to 6 hours at $100-$220 | $400-$1,320 |
In the third example, the report costs about 7 to 14 percent of the $7,000 gap between the bids, and it is the cheapest way to learn which bid matches the problem.
When the Paid Engineer Report Is Worth It
The paid report earns its fee when a decision with real money depends on the diagnosis:
- Buying a house with any foundation note in the home inspection. A report backs a price cut or repair credit. See buying a house with foundation issues.
- Bids that disagree on method or scope by thousands of dollars. See getting a second opinion.
- An insurance claim or dispute, where the other side will expect documentation from a licensed professional. See foundation damage claims.
- A repair that needs engineered plans for the building department.
- Selling a house with past repairs, where a clean report answers buyer questions early. See selling a house with foundation issues.
It is usually not worth it for hairline cracks with no floor slope, no sticking doors, and no growth over time. Measure and date those instead with the crack monitoring guide, and book an inspection if they change.
The math favors inspecting when symptoms are real. HomeGuide puts settling or sinking foundation repairs at $4,500 to $20,000, so a $550 inspection is roughly 3 to 12 percent of the repair it helps you decide on, and it may show that the larger job is not needed at all.
What a Good Inspection Quote Includes
Before you book, get these answers in writing:
- The fee and how it is charged: flat rate, or hourly with an estimate of hours.
- What is covered: exterior, interior, and whether the inspector will enter the crawlspace or basement.
- A floor-level survey: how many points are measured and whether you get an elevation map.
- Report contents: photos, measurements, a probable cause, and a severity rating.
- Recommendations: whether the report names a repair approach, and the price of a stamped repair plan if you need one later.
- Turnaround: when the written report arrives, which matters to buyers working to a contract deadline.
- Follow-up fees: the price of a phone consult, a re-inspection, or a post-repair verification visit.
- Credentials: a state engineering license number for an engineer, or ASHI, InterNACHI, or AHI certification for a home inspector.
- Independence: whether the inspector sells repairs or earns referral fees from contractors.
HomeGuide also suggests asking for a sample report and attending the inspection, so you see what the inspector sees and can ask questions on the spot. To keep the fee down, book before the problem becomes an emergency, bundle the foundation check with a home inspection when buying, and clear stored items away from the crawlspace hatch and basement walls so the visit runs faster.
What to Expect in a Foundation Inspection
A short summary follows; the full inspection walkthrough covers each step.
Exterior Assessment
- Visual inspection of foundation walls, perimeter, and adjacent grade
- Assessment of drainage patterns (does water flow away from the foundation?)
- Observation of any visible cracks in the foundation, brick veneer, or stucco
Interior Assessment
- Inspection of drywall, door frames, window frames for cracking and misalignment
- Floor level measurement: a laser level or manometer maps differential elevation across the home
- Inspection of basement or crawlspace structure and conditions
Documentation
A written report should include:
- Observations and photographs
- Measured floor level data
- Assessment of severity and likely cause
- Recommendations (repair urgency, suggested method, or recommendation for further investigation)
What a Foundation Inspection Won’t Tell You
A visual inspection has limits:
- It doesn’t show what’s beneath the slab
- It can’t definitively identify the root cause without soil testing or subsurface investigation
- It doesn’t tell you what the soil conditions are at depth
- It can’t detect closed voids or pre-collapse sinkholes (GPR scanning required for that)
For complex cases, such as unusual cracking patterns, suspected sinkhole activity, or a pre-purchase inspection on an older structure, additional investigation (soil boring, GPR) may be recommended after the initial inspection.
Is the Inspection Worth the Cost?
Yes, almost universally. A $400 inspection that identifies a $12,000 repair before you purchase a home could be worth tens of thousands of dollars. An inspection that tells you your foundation is fine (and explains what you’re seeing is normal shrinkage cracking) is worth $400 for the peace of mind.
For any property where you’re seeing symptoms such as uneven floors, sticking doors, or visible cracks, an inspection cost is trivial relative to the decision you’re about to make.