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Find Mold & toxic material testers in Oakland

Welsh Demolition Inc.
New to Angi

In business since 2012

Free estimates

Warranties offered

Welsh Demolition Inc. is a full service demolition and asbestos removal contractor. We are a family owned business and have been in business since 2012.

Avatar for SERVPRO of San Leandro
SERVPRO of San Leandro
New to Angi

In business since 1967

Emergency services offered

SERVPRO of San Leandro is a trusted leader in the restoration industry, and our highly trained technicians provide 24-hour emergency service. We’re dedicated to responding faster to any size disaster with the training, equipment, and experience to respond to your restoration or cleaning needs.

Global Plasma Solutions
5.00(
1
)

In business since 2008

Global Plasma Solutions is a manufacturing company that sells air purification systems primarily into the commercial and residential markets. Home owners can benenfit from our systems as they are easily adapted to any HVAC system. Go to www.gpshvac.com to find a certified contractor near you to have one installed within your home.

Recommended by100%of homeowners
Avatar for Evergreen Air Duct Cleaning San Bruno
Evergreen Air Duct Cleaning San Bruno
New to Angi

In business since 2000

Free estimates

Emergency services offered

Professional Air Duct & Dryer vent Cleaning & Repair Company in San Bruno.

Avatar for Evergreen Carpet Cleaning Dublin
Evergreen Carpet Cleaning Dublin
New to Angi

In business since 2000

Free estimates

Emergency services offered

Professional Air Duct & Dryer vent Cleaning & Repair Company in Dublin.

Avatar for Evergreen Carpet Cleaning San Ramon
Evergreen Carpet Cleaning San Ramon
New to Angi

In business since 2000

Free estimates

Emergency services offered

Professional Air Duct & Dryer vent Cleaning & Repair Company in San Ramon.

Mr. Fix It Roofing and Paving
5.00(
3
)

In business since 1997

Free estimates

Emergency services offered

roofing paving of all types remodeling an renovation over 27 years experience good work at a good price

Recommended by100%of homeowners
Moore Mechanical Heating & Air Conditioning
4.94(
66
)

In business since 1985

Free estimates

Emergency services offered

"Perfect service. Very clean, technician wearing protective clothing including a mask. All prices were up front before work was done. Just before they arrive a text is sent with a picture of technician letting you know they are on the way. I would definitely use them for all my heating and air again. Excellent service"
Recommended by98%of homeowners
Avatar for Evergreen Air Duct Cleaning Walnut Creek
Evergreen Air Duct Cleaning Walnut Creek
New to Angi

In business since 2000

Free estimates

Emergency services offered

Professional Air Duct & Dryer vent Cleaning & Repair Company in Walnut Creek.

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FAQs for mold & toxic material test projects in Oakland, CA

Some companies offer a no‑cost phone or video consultation that screens for red flags. If the discussion points to a real issue, the pro will recommend a paid on‑site inspection. The complimentary call clarifies whether you need full testing, but it isn’t a substitute for samples, lab work, or a written report. Always confirm what the free service covers before you schedule.

A standard inspection, which includes basic air and surface samples, takes an average of two hours. If the pro needs to probe hidden spaces, such as wall cavities or ductwork, plan on up to six hours. Extra time allows the inspector to reach tight areas, collect additional samples, and document findings. Lab analysis is a separate process and often adds several business days to the overall timeframe before you receive the full report.

Mold thrives where moisture lingers and air flow is poor. Common hotspots include bathroom walls, kitchen backsplashes, window sills, HVAC vents, fireplaces, crawl spaces, and enclosed attics. Check these areas regularly—especially after leaks or high‑humidity weather—to catch growth early and avoid costly repairs.

Unchecked mold can knock 20% to 37% off a home’s market value because buyers worry about hidden damage and health risks. Even after remediation, visible staining or a history of major moisture issues can still lower offers and prolong the time on the market. Addressing mold quickly protects both your property’s structural integrity and its resale appeal.

The Oakland, CA homeowners’ guide to mold & toxic material tests

From average costs to expert advice, get all the answers you need to get your job done.