Home Inspection Cost Calculator

Estimate home inspection cost by size and age with recommended add-on tests.

By Konstantin Iakovlev · Updated September 2026 · Source: CFPB — Owning a Home

Home Size (sqft)

Home Age

Base Inspection

$400.00

Recommended Add-ons

$150.00

Total with Add-ons

$550.00

Inspection Breakdown

Base home inspection$400.00
Radon testing (recommended)$150.00
Pest inspection$75.00
Mold inspection$300.00
Sewer scope$200.00
Total with recommended$550.00

Use the Home Inspection Cost Calculator above to calculate your results. Enter your values and see instant results — all calculations run in your browser.

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

How It Works

A professional home inspection priced by the property's size and age is far easier to plan for once you have a number in hand. Folding that figure into your purchase budget early heads off the kind of surprise that derails a closing. A standard inspection usually costs a few hundred dollars, and the add-on tests an older house calls for can nearly double that, so this estimate shows both the base fee and the recommended extras.

The math starts from a $400 base fee for a home up to 2,000 sq ft and adds $100 for each full 1,000 sq ft above that. Age adds $50 for a house of about 25 years and $100 for one of 50 years or more, since older mechanical and structural systems take longer to evaluate. Add-on tests come on top at fixed prices: radon $150 (recommended for every home), pest $75 and a sewer scope $200 (recommended from about 25 years), and mold $300 (recommended at 50+).

Actual costs move with your location, the inspector's depth of experience, and how competitive the local market is, so read these as estimates. Price alone is a poor way to pick an inspector; thoroughness and a strong track record matter far more. Skipping the recommended add-on tests is a costly gamble, since they often surface hidden problems that would otherwise turn into expensive repairs later.

Example: a 3,000 sq ft Home About 25 Years Old

  1. 1 Input: Home size = 3,000 sq ft, Home age = about 25 years.
  2. 2 Calculation: Base fee $400, plus $100 for the one full 1,000 sq ft above 2,000, plus $50 for age = $550. Recommended add-ons at this age: radon $150 + pest $75 + sewer scope $200 = $425.
  3. 3 Result: Base inspection $550. With the recommended add-ons: $975.
  4. 4 Context: This estimate helps you budget for a comprehensive inspection of a larger, older home, including crucial environmental and pest checks. Confirm these figures with local inspectors, as regional pricing can vary. This provides a solid financial baseline for your home purchase.

Source: CFPB — Owning a Home · Last updated: September 2026

Frequently Asked Questions

How much does a home inspection cost?
A standard home inspection costs $300-$500 for a typical single-family home. Larger homes (3,000+ sq ft) can cost $500-$700. The price usually scales with square footage and age of the home.
Is a home inspection worth it?
Yes. Home inspections frequently uncover issues costing $5,000-$20,000+ to repair, such as roof damage, foundation problems, or faulty wiring. The $300-$500 investment provides essential negotiating leverage.
What additional home inspections should I get?
Common add-on inspections include radon testing ($150-$200), termite/pest inspection ($75-$150), sewer scope ($200-$400), and mold testing ($200-$600). The calculator recommends radon testing for every home, adds the pest and sewer-scope inspections from about 25 years of age, and adds mold testing at 50 years or more.