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Find Mold & toxic material testers in Berkeley

Avatar for Bio 911
Bio 911
5.0(
75
)

Serving Berkeley, CA and surrounding areas

Angi Approved

In business since 2005

Free estimates

Emergency services offered

"Bio 911 was fast and efficient. Explained every detail of the procedure. The air tests preformed at the conclusion of the remediation process were well within the zone for occupancy. Job well done by all participants."
Mold under window
mold on concrete foundation
after treatment
after remediation
Hoarding cleanup

+18

Response time5 hrs
Response rate98%
1 neighbors recently requested a quote
Avatar for Pacific Pure Maintenance
Pacific Pure Maintenance
4.9(
32
)

Serving Berkeley, CA and surrounding areas

Angi 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%
175 neighbors recently requested a quote
Avatar for Moisture & Restoration Consultants, LLC
Moisture & Restoration Consultants, LLC
4.8(
48
)

Serving Berkeley, CA and surrounding areas

Angi Approved

In business since 1994

Emergency services offered

Warranties offered

"Dave was extremely helpful in giving grounded, low cost solutions for my ongoing mold issue. Proving sound and reliable advice in a sea of so much overwhelming information was invaluable. He took the time to look over a previous report that provided misguided information and recommendations and took the time to walk me through the correct steps saving me so much time and headache. Thank you so so much. I highly recommend this company for their mold services and consult."
Mold Remediation Project
Master Bathroom
Master Bathroom
Hall Bathroom
Hall Bathroom

+27

Response time10 hrs
13 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Mold & Air Quality Consulting LLC
Mold & Air Quality Consulting LLC
1.0(
1
)

Serving Berkeley, CA and surrounding areas

Angi 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%
Mold Test Company Western Hub
New to Angi

Serving Berkeley, CA and surrounding areas

Angi Approved

In business since 2008

Free estimates

Credit card accepted

At Mold Test Company NOCA, we take great pride in the experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship, and complete customer satisfaction from start to completion of a project. In order to understand the needs, and expectations of our customers, we take great care to work, and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

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FAQs for mold & toxic material test projects in Berkeley, 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 Berkeley, 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.