2026 Home Inspection Cost Reference: By Home Size and Add-On Test
Published 2026-07-02 · Updated 2026-07-02
In the United States in 2026, a standard home inspection on a 1,500 to 2,500 square foot single-family home typically costs $300 to $450, a smaller home under 1,500 square feet runs $260 to $380, and a home over 4,000 square feet runs $450 to $680, all before any add-on test or local cost-of-living adjustment. These are the national baseline figures produced by Home Inspection Cost's own calculator model, current as of July 2026.
How much does a home inspection cost by home size in 2026?
Home inspection cost scales primarily with square footage, because a larger home simply takes an inspector longer to walk and document. A home under 1,500 square feet costs $260 to $380 for a standard inspection. A typical 1,500 to 2,500 square foot single-family home, the most common size band, costs $300 to $450. A larger 2,500 to 4,000 square foot home costs $380 to $560, and a home over 4,000 square feet costs $450 to $680. Add-on tests and an older home age both push the price higher on top of the size-based figure; a location adjustment based on ZIP code applies on top of all of that. These figures are this site's own calculator model output at a neutral, national-average location and a newer home with no add-on test; ZIP-adjusted local estimates typically fall between about 0.90x and 1.35x this baseline.
2026 home inspection cost reference table
The table below is generated directly from the constants inside this site's home inspection cost calculator: a $300 to $450 baseline for a 1,500 to 2,500 square foot newer home, multiplied by a home-size factor, an add-on factor, and a home-age factor. It does not adjust for ZIP code; see the location note below the table for how much your area can move these numbers.
| Home size | Standard, newer home | + radon, mold, or termite test, newer home | Standard, older/historic home |
|---|---|---|---|
| Under 1,500 sq ft | $260 to $380 | $360 to $540 | $290 to $440 |
| 1,500 to 2,500 sq ft | $300 to $450 | $420 to $630 | $340 to $520 |
| 2,500 to 4,000 sq ft | $380 to $560 | $520 to $790 | $430 to $650 |
| Over 4,000 sq ft | $450 to $680 | $630 to $940 | $520 to $780 |
Download the full table as a CSV file. It includes all 24 home size, add-on, and home-age combinations, including the sewer-scope add-on not shown above, with separate low and high columns.
What do the add-on tests cost on top of the base fee?
The calculator applies two add-on multipliers on top of the size-based base fee. Adding a radon test, mold check, or termite (WDO) inspection carries a combined 1.4x multiplier in the model, since these are commonly bundled by inspectors visiting the same property. Adding a sewer scope carries a 1.2x multiplier. On a 1,500 to 2,500 square foot newer home, that moves the estimate from a $300 to $450 baseline up to $420 to $630 with radon, mold, or termite testing, or $360 to $540 with a sewer scope. Both add-ons scale with home size: on a home over 4,000 square feet, the same 1.4x and 1.2x multipliers apply to a much larger base.
How much does home age change the price?
The model applies a 1.15x multiplier for an older or historic home, reflecting the extra time inspectors typically need to evaluate aging systems, additional access points, and materials common in older construction. On the 1,500 to 2,500 square foot baseline, that moves a newer-home estimate of $300 to $450 up to $340 to $520 for an older or historic home of the same size. This factor is independent of and stacks with both the add-on-test and ZIP-code adjustments.
How much does location change the price?
The figures above hold location constant at a national average (multiplier of 1.0x). Home Inspection Cost's calculator then adjusts for your ZIP code using a location multiplier that runs from about 0.90x in the lowest-cost markets the model tracks up to about 1.35x in the highest-cost metro ZIP codes it tracks, such as parts of Manhattan and the San Francisco Bay Area. Applying that full range to the 1,500 to 2,500 square foot standard baseline, for example, moves the estimate from about $270 at the low end to roughly $608 at the high end. Enter your own ZIP code in the calculator for a location-adjusted number instead of the national baseline shown here.
Methodology: where these numbers come from
Every figure on this page is computed from the constants in Home Inspection Cost's own calculator, not from a third-party pricing survey. The base range is $300 to $450 for a 1,500 to 2,500 square foot newer home with no add-on test, at a neutral location. That base is multiplied by a home-size factor (0.85x for under 1,500 square feet, 1x for 1,500 to 2,500 square feet, 1.25x for 2,500 to 4,000 square feet, 1.5x for over 4,000 square feet), an add-on factor (1x with no add-on, 1.4x for radon, mold, or termite testing, 1.2x for a sewer scope), and a home-age factor (1x for a newer home, 1.15x for an older or historic home), then rounded to the nearest $10. The location step applies a further ZIP-code multiplier of about 0.90x to 1.35x, derived from the calculator's built-in table of ZIP-prefix and regional cost-of-living adjustments, but that step is left out of the reference table above so the table reflects one consistent, location-neutral baseline. What counts as a standard inspection in this model follows the scope described in the American Society of Home Inspectors' Standard of Practice, approved January 8, 2026, which covers structural components, exterior, roofing, plumbing, electrical, heating, air conditioning, interiors, and insulation and ventilation. This page was last checked and refreshed on 2026-07-02 and will be updated if the underlying calculator constants change. It carries the 2026 year because it reflects 2026 US pricing patterns as modeled by this site; it is not a projection for future years.
This reference is a model output, not a guarantee of what any individual inspector will charge. Actual quotes vary by inspector, region, and property condition. It does not replace an in-person quote. Get at least two written quotes from a licensed home inspector before booking.
Frequently asked questions
Where do the numbers on this page come from?
They are computed from the same cost constants built into Home Inspection Cost's free calculator: a base range for a standard-size home, multiplied by factors for home size, add-on tests, and home age. They are not pulled from a third-party pricing survey.
Why is there no ZIP-adjusted column in the table?
The table shows one consistent, location-neutral baseline so home sizes and options can be compared directly. Use the free calculator with your ZIP code entered to see a location-adjusted estimate for your area.
Does this table include the radon mitigation system or repair costs?
No. The figures cover the inspection fee itself, not remediation. A radon mitigation system, for example, typically costs $800 to $2,500 separately if your test comes back at or above the EPA's 4 pCi/L action level, per EPA radon guidance last updated November 12, 2025.