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Find Mold & toxic material testers in San Jose

Avatar for Certified-Environmental
Certified-Environmental
4.6(
28
)
Mold & Toxic Material Test

Serving San Jose, CA and surrounding areas

Approved

In business since 1990

Free estimates

Offers commercial services

"Richard Gray and his daughter Jayce, also a certified environmentalist, were punctual for our appointment and very thorough with sample testing and air quality testing. They were very patient in explaining their process and answered all my questions without hesitation. I would highly recommend them to anyone seeking air quality testing and mold abatement."
Response time4 hrs
Recommended by96%of homeowners
Avatar for Mold Remedies
Mold Remedies
4.4(
30
)
Mold & Toxic Material Test

Serving San Jose, CA and surrounding areas

Approved

In business since 2002

Free estimates

Small jobs welcome

"Incredibly smart pro, learned a ton from the visit and I think we found valuable information about our property from the results of the tests conducted."
Mold Inspection
Mold Inspection
Mold Inspection
Mold Inspection
Mold Inspection

+2

Response time2 days
Response rate100%
2 neighbors recently requested a quote
Avatar for Mold Test Company Central CA
Mold Test Company Central CA
4.0(
89
)
Mold & Toxic Material Test

Serving San Jose, CA and surrounding areas

Approved

In business since 2015

Emergency services offered

Small jobs welcome

"The inspector was professional and thorough. The report was timely and the company's representative called me to explain the results of the test. I've emailed him to request clarifications and am awaiting his reply. The only negative thing is that after our telephone conversation he transferred me to a 3rd party company who markets mold removal services. The rep there tried to sell me his product. I didn't buy it yet."
Attic Ceiling
Drywall
Drywall
Insulation
Insulation

+66

Response time10 hrs
135 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Environmental Science Services
Environmental Science Services
4.5(
42
)
Mold & Toxic Material Test

Serving San Jose, CA and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"Shane was my first contact (via phone) and was very knowledgeable and went above & beyond to answer all my questions. I tend to have pretty good discernment, and I immediately sensed I was dealing with an honest, straightforward company. Shane offered me an appointment 2 days later that s fast! Awesome when you re concerned about mold! Ray came to our house (a several hour drive to the Redding area!), and was prompt & called ahead to be courteous. Total genuine and nice guy (especially bc he s a dog lover ;) He wasn t rushed at all, answered all our questions (we had a lot), and actually said he likes & welcomes questions! After we received our report & invoice, I THOUGHT I was messaging my husband, lol, but I texted Shane: Thumbs up! They did thorough testing, & the price was still what was initially quoted! I highly recommend these guys!!"
interior
IAQ
Clandestine Laboratory Investigation
Wipe Testing for Asbestos
Water Intrusion Mold Testing

+3

Response time8 hrs
7 neighbors recently requested a quote
Recommended by97%of homeowners
RC Janitorial Restoration
3.6(
236
)
Mold & Toxic Material Test

Serving San Jose, CA and surrounding areas

Approved

In business since 1975

Free estimates

Customers say: True professional

"bloodtestcentersusa.com offers direct-access lab testing services for individuals without insurance or a doctor’s order. We provide access to thousands of Labcorp and Quest Diagnostics locations nationwide. Schedule tests online, choose your nearest lab, and get quick, secure results. Affordable pricing. Complete confidentiality."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+12

Recommended by80%of homeowners
Z-CON Specialty Services, Inc.
New to Angi
Mold & Toxic Material Test

Serving San Jose, CA and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

Curtis Roberts Mold Inspection
4.5(
175
)
Mold & Toxic Material Test

Serving San Jose, CA and surrounding areas

In business since 2004

Free estimates

Credit card accepted

"I own a rental property in Elk Grove, but live out of state. I needed someone to address a potential mold issue in the rental property and needed someone that could handle that and work with my tenant given I could not be there. I found Curtis to be professional and very courteous. He handled my needs quickly and effectively and I would highly recommend his service to anyone."
Under Kitchen Sink
Bathroom Cabinet
Response time3 hrs
Recommended by95%of homeowners
A1 Certified Environmental
4.6(
422
)
Mold & Toxic Material Test

Serving San Jose, CA and surrounding areas

In business since 2003

Credit card accepted

"I looked around for mold testing help for a few days; I threw all of my belongings out according to recommendations online. When Carl arrived, he put my worries to rest and I am so very glad I will have the right test in hand in just a few days. I feel like a huge weight is off of my shoulders. Praise God! -Jill"
Visible signs under sink
Damp crawlspace
Peeling paint (ceiling)
Air sampling
Response time3 hrs
Recommended by92%of homeowners
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FAQs for mold & toxic material test projects in San Jose, 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 Jose, 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.