Costs · Nashville

What Nashville homeowners pay.

Nobody publishes Nashville-only averages for radon and mold work, so these are national ranges from 2026 cost guides. Use them to sanity-check a quote, not as a quote.

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Last updated · sources at the end of the page

What does radon or mold work cost in Nashville?

No Nashville-only averages are published. National 2026 guides put a professional radon test at $145–$714, a mitigation system at $805–$1,326, a mold inspection at $303–$1,075 and mold remediation at $1,223–$3,757. Before paying anyone, order the free radon kit Tennessee's state program mails to each household. Use these ranges to sanity-check a quote.

Which four prices do people ask about?

National price ranges for radon and mold jobs
JobTypical U.S. rangeAverage
Professional radon test$145–$714$421 [HomeAdvisor]
Radon mitigation system$805–$1,326$1,043 [Angi]
Mold inspection$303–$1,075$689 [Angi]
Mold remediation$1,223–$3,757$2,369 [Angi]

Angi and HomeAdvisor share a parent company and data, so these are best read as one source, not several.

Start at $0. The Tennessee Radon Program sends one free test kit per household, lab analysis included. Order online or call 1-800-232-1139.[TDEC]

What pushes a radon quote up?

House size is the big one. Angi's breakdown: about $800–$1,200 up to 1,500 sq ft, $1,200–$2,000 for 1,500–2,500 sq ft, and $2,000–$3,000 for 2,500–4,000 sq ft.[Angi] Foundation type and how many suction points the house needs matter too. EPA's view is that most homes can be fixed for about the same cost as other common home repairs, and the system's fan has ongoing running costs.[EPA]

What should you ask a radon contractor?

  • Can you show proof of state certification or professional proficiency credentials, plus liability insurance?
  • Will you do diagnostic testing before designing the system?
  • Does the system include a warning device in case it stops working?
  • Is a post-installation test included, and is there a guarantee to reach 4 pCi/L or below? For how long?

Adapted from the contractor checklist in EPA, Consumer's Guide to Radon Reduction (PDF).

What pushes a mold quote up?

Location, mostly. Angi's ranges by area: bathroom $500–$1,000, crawl space $500–$2,000, basement $500–$3,000, attic $1,000–$4,000, HVAC system $3,000–$10,000, and whole-house jobs $10,000–$30,000.[Angi] Lab sampling adds roughly $250–$350 per air sample or $200–$300 per swab,[HomeAdvisor] though EPA says sampling usually isn't needed when mold is visible.[EPA]

The cheapest mold job is the one that never gets big. EPA's 24–48 hour drying window after a leak or flood is the best money-saving advice on this page.[EPA]

Keep reading

Sources

  1. HomeAdvisor, radon testing cost (Jun 2026)
  2. Angi, radon mitigation cost (Sep 2026)
  3. Angi, radon remediation cost by home size
  4. Angi, mold inspection cost (Oct 2026)
  5. HomeAdvisor, mold testing cost
  6. Angi, mold remediation cost (Jul 2026)
  7. Tennessee Department of Environment & Conservation, Radon Program
  8. EPA, Home Buyer's and Seller's Guide to Radon (PDF)
  9. EPA, Consumer's Guide to Radon Reduction (PDF)
  10. EPA, Mold Testing or Sampling
  11. EPA, A Brief Guide to Mold, Moisture and Your Home

Figures checked 2026-10-21. National estimates, not quotes.