Guides
What to Charge for Home Inspection Add-On Services: Radon, Mold, Sewer Scope
Home inspection add-on services pricing: radon tests in Pennsylvania, mold inspections in Florida, and sewer scopes in Minnesota, with USD ranges and cost drivers.
What to take away
- Radon add-ons in Pennsylvania EPA Zone 1 counties commonly run $100 to $200 when bundled with a home inspection, and $150 to $250 as a standalone test.
- Mold inspection add-ons in humid Florida typically cost $200 to $500, driven by sample count and lab fees.
- Sewer scope inspections in older Minnesota neighbourhoods usually range from $150 to $350.
- Equipment type, lab processing, and access time are the largest cost drivers.
Add-on price anchors by region
| Add-on service | Example market | Typical price range (USD) |
|---|---|---|
| Radon test | Pennsylvania (EPA Zone 1) | $100 - $250 |
| Mold inspection | Florida (humid climate) | $200 - $500 |
| Sewer scope | Minnesota (older housing) | $150 - $350 |
Ranges are illustrative, based on common inspection quotes in these regions. They assume a single-family home under 3,000 square feet. Larger homes or multiple test locations push the number higher.
Add-on price anchors by region
Radon test
- Example market
- Pennsylvania Zone 1
- Typical price
- $100 - $250
Mold inspection
- Example market
- Florida humid
- Typical price
- $200 - $500
Sewer scope
- Example market
- Minnesota older
- Typical price
- $150 - $350
Radon testing price in Pennsylvania Zone 1
The EPA identifies Zone 1 counties as areas with predicted average indoor radon above 4 pCi/L. Much of Pennsylvania falls in Zone 1, so buyers often request a radon add-on. For more on radon risk and testing, see the EPA radon page. A charcoal canister test can cost $100 to $150 when left for 48 hours and sent to a lab. A continuous radon monitor adds $150 to $250 for faster hourly data and a tamper report. Inspectors in Philadelphia, Lancaster, and Allentown often bundle the monitor with a standard inspection at the lower end. Metro labor rates shift these prices; see high-cost and low-cost U.S. metros for comparisons.
Mold inspection add-on cost in humid Florida
Florida's humidity keeps indoor moisture high enough that buyers ask for mold checks in many contracts. EPA mold guidance says visible mold may not need sampling, but real estate deals often request air samples. The EPA mold page explains when sampling is useful. A typical Florida mold add-on costs $200 to $500. A visual inspection with one or two air samples lands near $200 to $300. Adding surface swabs or a second indoor air sample can raise the total to $400 or more. Lab fees for each sample often run $30 to $60, and rush turnaround adds another $50 to $100.
Sewer scope inspection price in older Minnesota neighbourhoods
Minneapolis, St. Paul, and Duluth have thousands of pre-1960 homes with clay or cast iron sewer laterals. A camera scope add-on often costs $150 to $225 for a standard run. Homes with hard-to-find cleanouts or long runs from the house to the street can push the price to $300 or $350. Operators with a locator that marks the line's depth charge more than those with a basic push camera. The higher price usually includes a video file and a written condition note. Many inspectors bundle sewer scope with radon for a $250 to $350 total on older Minnesota properties.
What moves the number on a quote
Three cost drivers dominate add-on pricing. Equipment type changes the radon and sewer number. A continuous radon monitor costs more per job than a charcoal canister but gives hourly data and tamper detection. A self-leveling sewer camera with a locator costs more to run than a simple push camera. Lab fees move the mold number. Each air or surface sample carries a lab charge, often $30 to $60. Rush lab results can add $50 to $100. Sample count multiplies that line item quickly. Access time is the third driver. A crawlspace mold check or a sewer cleanout buried in a finished basement adds 30 to 60 minutes of labor. Longer runs and multiple test locations also raise the quote. For a different moisture pattern, read about Seattle moisture and mold inspections.
Line by line: a combined add-on invoice
A bundled quote in a 1960s Minneapolis house might show these line items:
- Radon continuous monitor, 48 hours
- $175
- Mold visual plus two air samples, lab fees included
- $325
- Sewer scope with locator, 100-foot run
- $225
- Travel and setup inside the metro
- $25 Total: $750
A bundled radon and sewer scope often lands near $300 to $450, while adding mold sampling can push the total past $650.
What quotes leave out
Some inspectors fold add-on prices into the standard report and do not show lab fees separately. That hides the fact that lab turnaround can add two or three days to the final document. Ask whether the quote includes return shipping for radon canisters and disposal of mold cassettes. A low quote may omit a sewer scope video file or a written repair estimate for the buyer.
Where owners overspend
Owners overspend when they buy high-end equipment before demand is steady. A $6,000 self-leveling sewer camera may not pay for itself at $150 per job in a small market. Start with a quality push camera or rent equipment for the first few months. Also avoid paying for mold lab analysis you do not understand; a visual inspection with a clear report may be enough for some agents. For cost and control comparisons, see Home Inspection Franchise vs Independent.
