How much does radon mitigation cost in San Francisco, CA?

Most San Francisco homeowners spend between $1,300 – $3,650 on radon mitigation, with an average around $2,450. Local labor prices 45% above the national average, so San Francisco quotes tend to land at the higher end of national ranges.

Why is radon mitigation more or less expensive in San Francisco than elsewhere?

SF is the most expensive labor market on the West Coast; access and parking add to bids. Fog, damp and hillside conditions favor moisture-resistant assemblies.

Do I need a permit for radon mitigation in San Francisco, California?

SF DBI permits, historic review and neighborhood notification are common on exterior work. Always confirm current requirements with the local building department before signing a contract, and make sure the permit is pulled by your licensed contractor.

How many quotes should I get in San Francisco?

Get at least three written quotes from licensed, insured California contractors. Comparing line items — not just the bottom line — is the fastest way to spot an inflated bid in the Bay Area market.

How much does radon mitigation cost in 2026?

Most homeowners pay between $900 and $2,500, with a national average near $1,700. Small, simple jobs land at the low end; large or premium-material jobs run well above the high end.

What is the cost per system?

Installed pricing usually runs $900.00 to $2,500.00 per system, including labor and materials. Expensive metros can run 15–45% higher than that range.

What drives the price up the most?

Scope and access. Larger quantities lower your per-system price, but difficult access, demolition of existing work, structural repairs found mid-job, premium materials and rush scheduling each add 8–30%.

Permits are typically required when the work changes structure or ties into electrical, plumbing, gas or mechanical systems. Budget $75–$600 in most cities and confirm whether your contractor pulls it — unpermitted work can block a future home sale.

How long does the job take?

Most residential projects of this type finish in one to five working days once materials are on site. Custom orders, inspections and weather are the usual causes of delay.

How many quotes should I get?

Three. Bids on the same scope commonly vary 20–40%, and the middle bid with the strongest warranty and references is usually the best value — the cheapest bid often excludes prep, disposal or permits.

Home/Cost guides/Radon Mitigation/San Francisco, CA

Bay Area · California

Radon Mitigation cost in San Francisco, CA

San Francisco homeowners typically pay $1,300 – $3,650 for radon mitigation. Local labor and materials price 45% above the national average.

Get my San Francisco estimate Use the San Francisco calculator

San Francisco average

$2,450

Typical low

$1,300

Typical high

$3,650

Per system

$1,300 – $3,650

Sample ZIP

94103

What drives San Francisco pricing

Local labor

SF is the most expensive labor market on the West Coast; access and parking add to bids.

Permits & code

SF DBI permits, historic review and neighborhood notification are common on exterior work.

Climate & conditions

Fog, damp and hillside conditions favor moisture-resistant assemblies.

Instant cost calculator

Adjust the inputs to see live pricing

Number of suction points1 system

Quality / material level

Site access

Removal / prep work

Timing

Estimated project cost

$1,473 – $1,995

Most homeowners pay around $1,734

Compare quality / material level

Cost by material in San Francisco

Installed San Francisco pricing per system.

Option	Installed cost	Pros	Cons
Single-point sub-slab system	$1,550 – $2,100	—	—
Sub-slab with sealing	$2,100 – $2,750	—	—
Crawlspace membrane system	$2,750 – $3,550	—	—
Multi-point system with monitoring	$3,550 – $4,950	—	—

Where the money goes in San Francisco

A typical $2,450 San Francisco project, broken down by line item.

Labor0.45% · $11
Materials0.38% · $9
Permits & inspections0.05% · $1
Overhead & profit0.12% · $3

Common add-ons

Extras that show up on San Francisco quotes but rarely in the headline price.

Post-mitigation testing

$220 – $435

Crawlspace vapor barrier

$2,200 – $7,250

Sump pit sealing

$290 – $1,150

Continuous radon monitor

$220 – $580

Ways to save in San Francisco

Test first with a $20 kit before commissioning a system.
Route the pipe on the least visible elevation to skip cosmetic upgrades.
Collect three written bids on an identical scope — spreads of 20–40% are normal.
Book in the off-season and stay flexible on the start date to save 5–15%.
Bundle nearby work into one mobilization so you only pay setup and travel once.
Ask what the contractor would change to cut 10% without hurting durability.

San Francisco FAQs

Get a San Francisco price you can budget against

Answer a few questions about your project and we'll model a low, average and premium price for your CA ZIP code — then connect you with vetted local pros.

Get free quotes from certified pros

More San Francisco research

Best radon mitigation companies in San Francisco Radon Mitigation permits in California Radon Mitigation near me All California prices

Radon Mitigation cost near San Francisco

Radon Mitigation cost in San Jose, CA

$1,237 – $3,474

Radon Mitigation cost in Oakland, CA

$1,183 – $3,323

Radon Mitigation cost in Fremont, CA

$1,210 – $3,398

Radon Mitigation cost in San Mateo, CA

$1,255 – $3,524

Radon Mitigation cost in Berkeley, CA

$1,201 – $3,373

Radon Mitigation cost in Walnut Creek, CA

$1,166 – $3,272

More California cities

Los Angeles San Diego Sacramento Fresno Long Beach Anaheim Santa Ana Irvine

Other project costs in San Francisco

Fence Installation in San Francisco

$2,175 – $5,800

Roof Replacement in San Francisco

$12,325 – $49,300

Kitchen Remodel in San Francisco

$26,100 – $137,750

HVAC Replacement in San Francisco

$7,975 – $26,100

Deck Building in San Francisco

$6,380 – $17,400

Window Replacement in San Francisco

$653 – $2,175

See every San Francisco cost guide