Direct answer
Most Cincinnati homes pay $1,200–$2,400 for a complete radon mitigation system installed. Crawl-space homes run $1,800–$3,500 due to vapor-barrier work. Initial 48-hour testing is $150–$300. Free phone quotes available.
More detail
Pricing depends on foundation type (slab vs. basement vs. crawl space), system routing (interior vs. exterior), fan size required, and the post-mitigation pCi/L target. Same-day estimates after a 10-minute walkthrough.