Radon Mitigation Cost in Alpharetta, GA
Most Alpharetta homes: $1,000 to $2,200 for slab and basement foundations
Transparent pricing for radon mitigation systems. See what affects your cost and what's included in every installation.
What Affects Your Mitigation Cost
Foundation Type
The biggest cost factor. Slab homes are the most straightforward. Crawl spaces require membrane installation, adding material and labor. Combination foundations need multiple suction points.
Home Size
Larger Alpharetta homes (3,000-6,000+ sq ft) may need multiple suction points to effectively depressurize the entire sub-slab area. Each additional point adds materials and labor.
Pipe Routing
Where the vent pipe runs affects cost. Interior routing through closets is more discreet but takes longer. Exterior routing is faster but more visible. HOA requirements in Alpharetta communities may dictate the approach.
Accessibility
Finished basements, tight crawl spaces, and landscaping obstacles increase labor time. Custom Alpharetta homes with complex layouts may require more creative routing solutions.
Alpharetta Radon Mitigation Pricing
| Foundation Type | Typical Cost | System Type | Common In |
|---|---|---|---|
| Slab-on-Grade | $1,000 - $1,800 | Sub-Slab Depressurization | Most common in Alpharetta's post-2000 subdivisions (Windward, Webb Bridge, North Point) |
| Basement | $1,100 - $2,200 | Sub-Slab Depressurization | Some luxury and estate homes near Milton. Cost depends on whether basement is finished. |
| Crawl Space | $1,800 - $3,500 | Sub-Membrane Depressurization | Older homes near Crabapple and Downtown Alpharetta. Membrane installation adds cost. |
| Combination | $2,500 - $4,500 | Multi-Point System | Homes with both slab and crawl space areas. Multiple suction points required. |
Prices reflect typical installations as of February 2026. Actual costs depend on site assessment. Get a free quote for your specific home.
What's Included in Every Installation
Mitigation Cost vs. Alpharetta Home Values
Alpharetta is one of Metro Atlanta's premium housing markets. When you consider mitigation cost relative to home values here, the investment is minimal:
Return on Investment
Beyond health protection, a radon mitigation system adds value during resale. Homes with documented mitigation systems and verification test results sell more smoothly, especially in Alpharetta's active market where informed buyers routinely request radon testing during inspections.
New Construction: RRNC vs. Retrofit
Many Alpharetta homes are new construction. Here's how costs compare:
| Scenario | Cost | Details |
|---|---|---|
| RRNC built into new home | $350 - $600 | Added during construction. Passive pipe, membrane, and gravel layer. Most cost-effective approach. |
| Activate existing RRNC | $300 - $500 | If passive pipe exists, adding a fan converts to active system. Quick and affordable. |
| Full retrofit (slab) | $1,000 - $1,800 | Standard installation for homes without RRNC. Core through slab, install pipe and fan. |
| Full retrofit (crawl space) | $1,800 - $3,500 | Membrane installation plus depressurization system. Higher material and labor costs. |
Alpharetta Mitigation Cost FAQs
How much does radon mitigation cost in Alpharetta?
Most Alpharetta homeowners pay between $1,000 and $2,200 for a standard radon mitigation system on a slab or basement foundation. Crawl space homes run $1,800 to $3,500 due to the membrane installation. Combination foundations can reach $4,500. These prices include assessment, installation, and a post-installation verification test.
Why does crawl space mitigation cost more?
Crawl space mitigation requires installing a heavy-duty polyethylene membrane over the exposed dirt floor and sealing it to the foundation walls. This membrane creates the barrier needed for depressurization. The material cost, additional labor for membrane installation, and the difficulty of working in crawl spaces all contribute to the higher price.
Is radon mitigation worth the cost for an Alpharetta home?
Yes. On a $600,000 Alpharetta home, a $1,500 mitigation system represents just 0.25% of the home's value. It protects your family's health, satisfies real estate disclosure requirements, and prevents deal-killing issues when you sell. Radon is the second leading cause of lung cancer, and mitigation reduces levels by up to 99%.
How does Alpharetta pricing compare to Atlanta?
Alpharetta pricing is generally in line with the broader Metro Atlanta market. Costs can be slightly higher for larger homes (common in Alpharetta) that need multiple suction points or longer pipe runs to reach the roofline on 2-3 story homes. The foundation type matters more than the specific city.
What are the ongoing costs after installation?
The radon fan uses approximately $50 to $150 per year in electricity depending on fan size. Fans typically last 5 to 10 years before needing replacement ($300 to $600 installed). The EPA recommends retesting every 2 years ($150 to $200 for professional testing). Total annual operating cost is minimal.
Does my new Alpharetta home already have RRNC?
Some new Alpharetta homes include radon-resistant new construction (RRNC) features, but Georgia does not require them. If your home has RRNC prep (passive pipe without a fan), activating it with a fan costs $300 to $500. If your new home has no RRNC, a full retrofit system costs the standard $1,000 to $1,800 for slab foundations.
Can I negotiate radon mitigation into a home sale?
Yes. In Alpharetta's real estate market, radon findings are commonly negotiated. Buyers typically request the seller install a system before closing, provide a credit for installation cost, or reduce the sale price. Given that mitigation costs $1,000 to $2,200 on most homes, this is a small number relative to Alpharetta home prices.
Does homeowners insurance cover radon mitigation?
No. Most homeowners insurance policies do not cover radon mitigation because radon is classified as a naturally occurring hazard rather than sudden or accidental damage. The full cost is the homeowner's responsibility, though it can be negotiated during real estate transactions.
Get Your Free Alpharetta Mitigation Quote
Every home is different. Contact us for a free assessment and exact pricing for your Alpharetta home.
More Alpharetta Radon Information
Mitigation Systems
Understand which system type is right for your home
Radon Testing
Get tested before deciding on mitigation
Slab Foundation Radon
Most common foundation type in Alpharetta
Crawl Space Radon
Higher cost option for crawl space homes
Real Estate Testing
Negotiating radon costs in home purchases
New Construction
RRNC costs vs. retrofit for new homes
Radon Safety Resources
Expert insights and guides to keep you informed
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