123 cities · 9 counties
Asbestos, mold, lead and air quality testing across the Bay Area
Our dispatch desk sits in Hayward, so a Bay Area address is a local job on our board, not a referral. Samplers cover all nine counties — Alameda, Contra Costa, San Francisco, San Mateo, Santa Clara, Marin, Sonoma, Solano and Napa — and every sample is read by an independent accredited laboratory under chain of custody.
Instant price check
What testing costs in San Francisco Bay Area
What do you need tested?
Testing only. We report what the accredited lab finds and never bid the removal or remediation work.
Accredited lab
Third-party analysis
Testing only
No removal sales, ever
Same-day visits
Fast written results
Chain of custody
Tracked from start to finish
Four tests, one independent lab chain
San Francisco Bay Area coverage, county by county
Alameda County
Oakland, Berkeley and Alameda hold block after block of pre-1940 stock with plaster walls and lead-painted trim, while Hayward, San Leandro, Fremont, Dublin, Pleasanton and Livermore filled in between 1950 and 1978 with textured-ceiling tract housing.
Oversight: Bay Area Air Quality Management District (BAAQMD) Regulation 11 Rule 2, Alameda County Healthy Homes and Cal/OSHA
Contra Costa County
Richmond, San Pablo and Martinez carry pre-war refinery-town housing with plaster and lead paint; Concord, Walnut Creek, Pleasant Hill, Antioch and Brentwood are dominated by 1950–1979 ranch tracts with sprayed acoustic ceilings.
Oversight: BAAQMD Regulation 11 Rule 2, Contra Costa Health Services and Cal/OSHA
San Francisco
Most of the city predates 1950 — Victorian and Edwardian flats in the Mission, Noe Valley and the Haight, 1920s apartment stock in the Richmond and Sunset, all plaster walls, layered lead paint and decades of flooring on top of flooring.
Oversight: BAAQMD Regulation 11 Rule 2, SF Department of Building Inspection and Cal/OSHA
San Mateo County
The Peninsula's core cities — San Mateo, Burlingame, Redwood City, Daly City, South San Francisco — were built out from the 1920s through the 1960s, mixing plaster and lead-painted trim with mid-century vinyl-asbestos flooring.
Oversight: BAAQMD Regulation 11 Rule 2, San Mateo County Environmental Health and Cal/OSHA
Santa Clara County
The valley's orchards became housing between 1950 and 1975 — San Jose, Sunnyvale, Santa Clara, Mountain View and Cupertino tract homes with sprayed ceiling texture, 9-inch tile and original ducting still in the crawl space.
Oversight: BAAQMD Regulation 11 Rule 2, Santa Clara County Environmental Health and Cal/OSHA
Marin County
San Rafael, Novato, Mill Valley and Sausalito mix 1900s cottages with hillside 1950s–1970s post-and-beam homes, where duct wrap, transite flue pipe and layered paint are the norm.
Oversight: BAAQMD Regulation 11 Rule 2, Marin County Environmental Health and Cal/OSHA
Sonoma County
Santa Rosa, Petaluma and Sebastopol hold Victorian and 1920s stock alongside big 1955–1978 subdivisions, and thousands of homes have been rebuilt or repaired since the recent fire seasons.
Oversight: BAAQMD Regulation 11 Rule 2, Sonoma County Environmental Health and Cal/OSHA
Solano County
Vallejo and Benicia carry pre-war and shipyard-era housing with plaster and lead paint, while Fairfield, Vacaville and Suisun City expanded through the 1960s and 1970s with textured ceilings and vinyl-asbestos floors.
Oversight: BAAQMD Regulation 11 Rule 2, Solano County Environmental Health and Cal/OSHA
Napa County
Downtown Napa, St. Helena and Calistoga hold Victorian and early-1900s buildings with plaster, lead paint and long renovation histories, alongside 1960s–1970s valley-floor housing.
Oversight: BAAQMD Regulation 11 Rule 2, Napa County Environmental Health and Cal/OSHA
Independence
A company should not test the material it hopes to remove.
We collect and test material. ClearGuard does not sell removal work, keeping the finding independent. An abatement crew offering a "free inspection" is running a sales call with a lab form attached. We only sell the test, so a clean result and a positive result pay us exactly the same.
- No removal bids, no upsell, no referral kickback
- Every sample goes to an independent, accredited laboratory
- You get material names and percentages, not a vague pass or fail
- If a result is positive, we point you to licensed local abatement crews and exit the job