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Find Mold & toxic material testers in San Jose

Avatar for Certified-Environmental
Certified-Environmental
4.6(
28
)

Serving San Jose, CA and surrounding areas

Approved

In business since 1990

Free estimates

Offers commercial services

"Excellent, professional, immediate service. I would highly recommend Certified-Environmental for mold testing. They called me back same day and even made time to come do immediate testing on toxic mold. The certified professional team worked well together and spent a long time in my home where they discovered other areas of mold which I never thought to look. Hardworking and honest. They have very reasonable prices. They will only test what they believe is nessessary. The team is extremely knowledgeable in so many areas. They go out of their way for their customers. Certified-Environmental really cares about their customers and it shows. They kept in contact with me all the way through the mold remediation process. The 3rd party certified testing lab provided extremely through results which Certified-Environmental explained in detail to me in their findings report. Quick 2-3 day turn around time. Certified-Environmental got us out of an airborne toxic mold home. My family and I are truly so grateful! 5 Stars!!!"
Response time4 hrs
Recommended by96%of homeowners
Avatar for Mold Test Company Central CA
Mold Test Company Central CA
4.0(
89
)

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
203 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Bay Area Inspection Services LLC
Bay Area Inspection Services LLC
5.0(
1
)

Serving San Jose, CA and surrounding areas

Approved

In business since 2011

Free estimates

Credit card accepted

"I had a great experience working with Bay Area Inspection Services LLC. The inspectors were very knowledgeable and took the time to explain all findings in a simple and clear way. They were punctual, professional, and respectful throughout the process. The report was detailed and delivered quickly. I would definitely use their services again."
Moisture Scan Sunnyvale
Moisture Scan Sunnyvale
Moisture Scan Sunnyvale
Gas Leak Detection MV
Gas Leak Detection MV

+10

5 neighbors recently requested a quote
RC Janitorial Restoration
3.8(
4
)

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
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Additional Photos

+12

7 neighbors recently requested a quote
Recommended by100%of homeowners
Z-CON Specialty Services, Inc.
New to Angi

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!

Avatar for Certified-Environmental
Certified-Environmental
4.6(
167
)

Serving San Jose, CA and surrounding areas

In business since 2005

Free estimates

Credit card accepted

"Richard is an amazing mold specialist who took care to thoroughly inspect my apartment ahead of my DoD sponsored move. He took care to ensure that my moving company received more than adequate proof and documentation that my belongings were free and clear of mold in an apartment complex that is highly susceptible to it, here in Monterey. I would highly recommend his services to those who require the highest expertise in mold inspection, testing and mitigation. Thank you so much!"
Rich Gray
Allergies
Heating System
Bed Bug
Dust Mite

+5

Recommended by87%of homeowners
Avatar for Supraclean Water Damage Specialists
Supraclean Water Damage Specialists
4.6(
39
)

Serving San Jose, CA and surrounding areas

In business since 2001

Free estimates

Emergency services offered

"Very thorough inspection.  They spent a lot of time looking in all areas where the leak could have spread, from upstairs bedroom ceiling to downstairs garage walls.   They found signs of moisture, but no major mold concern.   I did not ask them to do the repair because we could not afford to have all the drywall removed at the time.
"
Additional Photos
Additional Photos
Recommended by100%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.