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Find Mold & toxic material testers in Santa Rosa

Avatar for Moisture & Restoration Consultants, LLC
Moisture & Restoration Consultants, LLC
4.8(
59
)

Serving Santa Rosa, CA and surrounding areas

Approved

In business since 1994

Emergency services offered

Warranties offered

"Mr. Osborn was very prompt in inspecting our water intrusion problems and testing for mold. We received the results of the testing within a short time and he made specific recommendations for correcting all of our issues. We appreciate his help very much."
Mold Remediation Project
Master Bathroom
Master Bathroom
Hall Bathroom
Hall Bathroom

+27

Response time10 hrs
14 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Bio 911
Bio 911
5.0(
17
)

Serving Santa Rosa, CA and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Kirill was professional and knew exactly what to do. The mold testing was done quickly. Kirill sent the samples to the lab and provided feedback. He gave me the lab results and the steps that needed to be taken next to resolve the problem."
Mold contamination due to roof leak
Bird droppings contamination
Bird carcasses and bird droppings
Bird droppings contamination
Mold contamination due to roof leak

+29

Response time7 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Environmental Science Services
Environmental Science Services
4.5(
42
)

Serving Santa Rosa, 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
8 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Sherlock Homes and Mold Inspection
Sherlock Homes and Mold Inspection
4.5(
20
)

Serving Santa Rosa, CA and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Steve is an absolute professional and his knowledge regarding mold both hidden and visible are invaluable. Steve can walk you through the appropriate testing to conduct for your specific needs and/ or concerns and will not try to up sell you. I d recommend him to anyone!"
Air Quality Pump
Mold Sample
Dr. Watson
ERMI Scale
Response time7 hrs
17 neighbors recently requested a quote
Recommended by94%of homeowners
Insight Environmental
5.0(
16
)

Serving Santa Rosa, CA and surrounding areas

Approved

In business since 2002

Free estimates

Credit card accepted

"As a first time home buyer, Steve Ramos of Envirovue was effieciently thorough and quite informative. He prefaced me on major concerns along the way equiping me with tangible insite to aide in my negoiation with the seller. Thank you for for sending me a REAL pro!"
Response time7 hrs
7 neighbors recently requested a quote
Recommended by18%of homeowners
A1 Certified Environmental
4.6(
422
)

Serving Santa Rosa, CA and surrounding areas

In business since 2003

Credit card accepted

"Professional, organized, oriented to the details, on time, courteous, established in his field of expertise and driven by facts - Carl is the person I would always relay on to help me if there is any need for the mold inspection. He saved me thousands of dollars with his prompt tests after several crews tried to charge me for non-existing problems. Thanks Carl four your dedication to your clients and helping our community! I appreciate it very much."
Visible signs under sink
Damp crawlspace
Peeling paint (ceiling)
Air sampling
Response time3 hrs
Recommended by92%of homeowners
Avatar for Isaacs Forensic Laboratories
Isaacs Forensic Laboratories
5.0(
6
)

Serving Santa Rosa, CA and surrounding areas

In business since 2000

Emergency services offered

Small jobs welcome

"I had a great experience with Isaac Forensic. Rafi and team responded quickly in an urgent situation, cleaned and fixed the mold problem the same day and in a short time. I am extremely happy with the service and the knowledge that Rafi demonstrated through the process. Highly professional and realizable. I would definitely recommend them!"
Response time7 hrs
Response rate97%
Showing 1-10 of 32
FAQs for mold & toxic material test projects in Santa Rosa, 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 Santa Rosa, 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.