Top-rated mold & toxic material testers.

Get matched with top mold & toxic material testers in San Lorenzo, CA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Mold & toxic material testers in San Lorenzo

Avatar for Pacific Pure Maintenance
Pacific Pure Maintenance
4.9(
32
)

Serving San Lorenzo, CA and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Customer service was excellent. I had a call back from them with in 15 minutes of my first call. Work was scheduled and completed in a timely manner. I would highly recommend them to anyone needing mold removal treatment in their home. It was a pleasure doing business with them."
Response time10 hrs
Response rate91%
100 neighbors recently requested a quote
Avatar for Mold & Air Quality Consulting LLC
Mold & Air Quality Consulting LLC
1.0(
1
)

Serving San Lorenzo, CA and surrounding areas

Approved

In business since 2019

Emergency services offered

Small jobs welcome

"**"Do not contact him?he?s a complete scammer and unlicensed. I was looking for an air testing service on Angi, and he called me. I explained over the phone that our newly renovated home had a strong chemical smell, so we wanted an air quality test. He said he could do it and asked for a deposit. About 15 minutes after I paid, I double-checked with him about the testing details, then he told me that he didn?t have the equipment to do the test. Then he refused to refund my deposit. First, he never mentioned the deposit was non-refundable. Second, the cancellation was entirely his fault?he suddenly claimed he couldn?t do the test due to lacking the tools. This is outright fraud: he took my money, won?t return it, and can?t even provide the service. I?ve already filed a complaint with the BBB. Everyone, beware of this scammer!"** "
Mold Inspection
Mold Inspection
Response time1 day
Response rate90%
Avatar for American Air Testing Inc
American Air Testing Inc
4.8(
12
)

Serving San Lorenzo, CA and surrounding areas

In business since 2001

Free estimates

Warranties offered

Professional testing for mold (CIE, CMRS CMC certified), bacteria (sewage spills), asbestos (CAC certification), lead-based paint (LRCIA certification) and chemical odors. Credentials and insured. Free telephone quote on your specific job. No products or services other than consulting. Additional Address: PO Box 12479 San Francisco, CA 94112.

Recommended by83%of homeowners
Avatar for Green Planet Mold & Restoration
Green Planet Mold & Restoration
5.0(
26
)

Serving San Lorenzo, CA and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"I could not have asked for a more positive experience! Jose is responsive, informative, flexible, and a great person! He set our expectations and followed them or reset them, thoroughly answered all of our questions, and communicated through email, phone calls, and text. He not only put us at ease, but also helped us with a Handyman to rebuild, figuring out our 3rd party post test company, and went above and beyond in supplying HEPA Filters and spraying our son's room! I highly recommend using Jose at Green Home Solutions for your mold testing and remediation. Definitely a "cut above!""
Recommended by100%of homeowners
...
Showing 1-10 of 188
FAQs for mold & toxic material test projects in San Lorenzo, 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 San Lorenzo, 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.