Top-rated mold & toxic material testers.

Get matched with top mold & toxic material testers in your area

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.

Mold & toxic material testers in San Francisco

Avatar for Mold Test Company Central CA
Mold Test Company Central CA
PO BOX 385
4.49(
71
)
Approved Pro
Mold Test Company Central CA
PO BOX 385
4.49(
71
)
Approved Pro
Customers say: Quality work
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
245 local quotes requested

At Mold Test Company Southern California, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's 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.

"This was not the first time using an Air Quality inspection company. They were help full, accessible, timely, accurate, and provided an analysis report that included a representative to review and answer questions. They also provided a referral to a remediation company that approached the issue in an efficient and cost effective manner."

Alfred H on May 2025

At Mold Test Company Southern California, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's 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.

"This was not the first time using an Air Quality inspection company. They were help full, accessible, timely, accurate, and provided an analysis report that included a representative to review and answer questions. They also provided a referral to a remediation company that approached the issue in an efficient and cost effective manner."

Alfred H on May 2025


Avatar for Air Quality Testers
Air Quality Testers
909 Marina Village Parkway #335
5.00(
3
)
Approved Pro
Air Quality Testers
909 Marina Village Parkway #335
5.00(
3
)
Approved Pro
5 years of experience

Breathe Easier with Expert Mold Inspections and Environmental Air Testing. At Air Quality Testers, we specialize in Certified Indoor Air Quality and Mold Testing Services. Our experienced professionals evaluate your air quality, detect mold, and provide personalized solutions. Schedule Your Test Today for a Healthier Home or Office: Tailored Advice and Simple Solutions for Clean Air. We safeguard your space with comprehensive air quality and mold testing, ensuring peace of mind for you and your family. Our focus is on those concerned about the air quality in their homes or workplaces. We stand out by offering certified indoor air quality testing and mold inspections, thorough air quality assessments, tailored recommendations for improvement, and cutting-edge technology to uncover hidden mold and evaluate air conditions.

"Job will be completed in the next couple of days"

Diana G on March 2025

Breathe Easier with Expert Mold Inspections and Environmental Air Testing. At Air Quality Testers, we specialize in Certified Indoor Air Quality and Mold Testing Services. Our experienced professionals evaluate your air quality, detect mold, and provide personalized solutions. Schedule Your Test Today for a Healthier Home or Office: Tailored Advice and Simple Solutions for Clean Air. We safeguard your space with comprehensive air quality and mold testing, ensuring peace of mind for you and your family. Our focus is on those concerned about the air quality in their homes or workplaces. We stand out by offering certified indoor air quality testing and mold inspections, thorough air quality assessments, tailored recommendations for improvement, and cutting-edge technology to uncover hidden mold and evaluate air conditions.

"Job will be completed in the next couple of days"

Diana G on March 2025


Alameda Mold Guys
509 Ironwood Rd
3.00(
2
)
Approved Pro
Alameda Mold Guys
509 Ironwood Rd
3.00(
2
)
Approved Pro
1 years of experience
Free onsite estimate

Alameda Mold Guys is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"DO NOT PAY CASH. I want to do a chargeback with my bank but I can't because I paid for their services in cash.. I was having multiple health symptoms consistent with mold exposure so I hired alameda mold guys to come and assess my place for mold in Aug 2024. Lab report showed no mold spores. About 4 weeks later I hired *another* company called certified environmental or something who emailed me their lab findings which showed an extensive amount of mold. I emailed the lab findings to the inspector from Alameda Mold Guys. I then called, texted, and multiple times emailed the guy from Alameda mold guys about a partial refund.. who kept telling me he would "get back to me" about the extreme difference in mold findings,but he never did get back to me. So it cost me double the price it should have cost to verify that there was mold in my place.."

Deborah S on September 2024

Alameda Mold Guys is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"DO NOT PAY CASH. I want to do a chargeback with my bank but I can't because I paid for their services in cash.. I was having multiple health symptoms consistent with mold exposure so I hired alameda mold guys to come and assess my place for mold in Aug 2024. Lab report showed no mold spores. About 4 weeks later I hired *another* company called certified environmental or something who emailed me their lab findings which showed an extensive amount of mold. I emailed the lab findings to the inspector from Alameda Mold Guys. I then called, texted, and multiple times emailed the guy from Alameda mold guys about a partial refund.. who kept telling me he would "get back to me" about the extreme difference in mold findings,but he never did get back to me. So it cost me double the price it should have cost to verify that there was mold in my place.."

Deborah S on September 2024


Avatar for Bio 911
Bio 911
755 Savannah Circle
4.99(
73
)
Approved Pro
Bio 911
755 Savannah Circle
4.99(
73
)
Approved Pro
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
20 years of experience

At Bio 911, we take great pride in being one of the nation's foremost leaders in the remediation industry. Our unwavering commitment is to deliver comprehensive and hassle-free cleanup experiences to homeowners and businesses across the San Francisco Bay Area, regardless of the nature of the damage or grime they face. With over 5 years of experience, we have become a trusted name for a diverse range of cleanup services and related support. However, our dedication extends far beyond expert cleaning alone. We firmly believe in going the extra mile to assist our customers throughout every step of the cleanup process. Our mission is not only to restore and clean spaces but also to provide exceptional care and support to those we serve. When you choose Bio 911, you can expect a level of service that surpasses expectations. Our team of skilled professionals is equipped with the knowledge and expertise needed to tackle even the most challenging cleanup projects.

"Kirill was thorough and factual without being an alarmist. Very happy with the service provided."

whitney q on February 2025

At Bio 911, we take great pride in being one of the nation's foremost leaders in the remediation industry. Our unwavering commitment is to deliver comprehensive and hassle-free cleanup experiences to homeowners and businesses across the San Francisco Bay Area, regardless of the nature of the damage or grime they face. With over 5 years of experience, we have become a trusted name for a diverse range of cleanup services and related support. However, our dedication extends far beyond expert cleaning alone. We firmly believe in going the extra mile to assist our customers throughout every step of the cleanup process. Our mission is not only to restore and clean spaces but also to provide exceptional care and support to those we serve. When you choose Bio 911, you can expect a level of service that surpasses expectations. Our team of skilled professionals is equipped with the knowledge and expertise needed to tackle even the most challenging cleanup projects.

"Kirill was thorough and factual without being an alarmist. Very happy with the service provided."

whitney q on February 2025


Avatar for Mold Remedies
Mold Remedies
4.61(
21
)
Approved Pro
Mold Remedies
4.61(
21
)
Approved Pro
Customers say: Super punctual
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
23 years of experience

Mold Remedies is the Bay Area’s premier Indoor Environmental Air Quality Survey (IEAQS) inspection and mold remediation company. We can assess your indoor environment for; Mold, Allergens, VOC’s, Radon, Formaldehyde, etc. We utilize our Architectural, Construction and Inspection expertise to identify the cause and offer solutions. Our remediation treatment; treats mold, bacteria and virus microbes, disinfects contents, deodorizes, oxidizes harmful VOC's, is murder on bugs and insects, deodorizes HVAC systems. It leaves behind no harmful VOC's or carcinogenic compounds and dissipates into a harmless gas and water. Full remediation coupled with fumigation and air scrubbing can create a reduction in downtime from 5 to 7 days to just 72 hours. Work GUARANTEED! Call today for an appointment. Let us provide you with a remediation quote and see how we can save you money, while creating a healthy, safe, and clean environment.

"Friendly and seemingly knowledgable. The lab results were the key for us."

Jeff D on August 2024

Mold Remedies is the Bay Area’s premier Indoor Environmental Air Quality Survey (IEAQS) inspection and mold remediation company. We can assess your indoor environment for; Mold, Allergens, VOC’s, Radon, Formaldehyde, etc. We utilize our Architectural, Construction and Inspection expertise to identify the cause and offer solutions. Our remediation treatment; treats mold, bacteria and virus microbes, disinfects contents, deodorizes, oxidizes harmful VOC's, is murder on bugs and insects, deodorizes HVAC systems. It leaves behind no harmful VOC's or carcinogenic compounds and dissipates into a harmless gas and water. Full remediation coupled with fumigation and air scrubbing can create a reduction in downtime from 5 to 7 days to just 72 hours. Work GUARANTEED! Call today for an appointment. Let us provide you with a remediation quote and see how we can save you money, while creating a healthy, safe, and clean environment.

"Friendly and seemingly knowledgable. The lab results were the key for us."

Jeff D on August 2024


Avatar for Express Dry
Express Dry
938 S Andreasen Dr
5.00(
11
)
Approved Pro
Express Dry
938 S Andreasen Dr
5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

IICRC Certified, we handle emergency flood response calls 24/7 and immediately fix your problems with the latest technology. Our goal is to get you back to normal fast by using the most advanced equipment and technology, including thermal imaging devices, to determine the extent of water, smoke or mold damage. We can detect moisture through drywall without penetrating any surfaces! Our work is precise and accurate. We handle jobs of any size from a toilet overflow to a whole house flood. Because our team has the right equipment and proper training, we are able to dry most structures within three days. Free water damage assessment for military and senior citizens!

"I am giving ExpressDry a 5.0 rating because they deserve it. They showed up on Thanksgiving week, great customer service, a big THANK YOU to Moy Munoz for making us feel like we were more than just a customer, i genuinely feel he wanted nothing but the best for us. He was quick to answer questions, explained the process in detail, his workers that came out and did the whole mitigation was awesome. They came in and got it done without any complications. Fast response, professional, quick, clean, friendly, helpful, I definitely recommend these guys! Thank you so much for all your hard work!"

Isis D on December 2020

IICRC Certified, we handle emergency flood response calls 24/7 and immediately fix your problems with the latest technology. Our goal is to get you back to normal fast by using the most advanced equipment and technology, including thermal imaging devices, to determine the extent of water, smoke or mold damage. We can detect moisture through drywall without penetrating any surfaces! Our work is precise and accurate. We handle jobs of any size from a toilet overflow to a whole house flood. Because our team has the right equipment and proper training, we are able to dry most structures within three days. Free water damage assessment for military and senior citizens!

"I am giving ExpressDry a 5.0 rating because they deserve it. They showed up on Thanksgiving week, great customer service, a big THANK YOU to Moy Munoz for making us feel like we were more than just a customer, i genuinely feel he wanted nothing but the best for us. He was quick to answer questions, explained the process in detail, his workers that came out and did the whole mitigation was awesome. They came in and got it done without any complications. Fast response, professional, quick, clean, friendly, helpful, I definitely recommend these guys! Thank you so much for all your hard work!"

Isis D on December 2020


Curtis Roberts AAA Mold Inspection
Home
5.00(
2
)
Approved Pro
Curtis Roberts AAA Mold Inspection
Home
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
61 local quotes requested

Curtis Roberts AAA Mold Inspection Services is certified, insured, and bonded. I have performed testing since 2004. In most cases (mold) test results come back the next business day. We provide you with professional assistance--certified mold inspectors--to find mold that could be hidden inside your walls, ceilings, floors, basement, crawl space, attic, as well as HVAC equipment and ducts. All technicians are certified and experienced in mold inspection (mold assessment) and mold testing; training includes sampling protocols and use of state-of-the-art equipment. Call us for an estimate today!

Curtis Roberts AAA Mold Inspection Services is certified, insured, and bonded. I have performed testing since 2004. In most cases (mold) test results come back the next business day. We provide you with professional assistance--certified mold inspectors--to find mold that could be hidden inside your walls, ceilings, floors, basement, crawl space, attic, as well as HVAC equipment and ducts. All technicians are certified and experienced in mold inspection (mold assessment) and mold testing; training includes sampling protocols and use of state-of-the-art equipment. Call us for an estimate today!


Avatar for Masizo Restorations
Masizo Restorations
134469 Mitchell Avenue
5.00(
5
)
Approved Pro
Masizo Restorations
134469 Mitchell Avenue
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
329 local quotes requested

We offer a variety of remodeling services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

"I had a remodel project in my kitchen and it turned out great, I could not ask for a better contractor to perform the scope of work at hand! Steve was very communicative and performed with precise accuracy! I highly recommend Masizo Development if you’re looking to remodel your home!"

Nicole B on December 2024

We offer a variety of remodeling services. We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality of work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule an estimate today!

"I had a remodel project in my kitchen and it turned out great, I could not ask for a better contractor to perform the scope of work at hand! Steve was very communicative and performed with precise accuracy! I highly recommend Masizo Development if you’re looking to remodel your home!"

Nicole B on December 2024


Avatar for Pure Restoration Inc
Pure Restoration Inc
12115 Magnolia Blvd
4.62(
75
)
Approved Pro
Pure Restoration Inc
12115 Magnolia Blvd
4.62(
75
)
Approved Pro
Customers say: Quality work
906 local quotes requested
24 years of experience

Quality Service You Can Count On! If you are experiencing water damage, mold or fire damage problems, or simply are just looking to remodel your kitchen or bathroom, Pure Restoration can help you! Our experts are highly knowledgeable with mold testing, structural restoration & remediation, including reconstruction for water damage or fire damage, water extraction and services. Pure can deal with virtually any project and takes pride in leaving our customers satisfied! We offer FREE inspections and estimates for your residential home or commercial property. With over 20 years of experience in the industry, Pure Restoration delivers advanced and reliable professional restoration services including mold inspections and testing throughout Los Angeles.

"The job went smoothly and was completed in a timely manner. The places where there was mold were identified and the drywall and/or insulation were removed. Any mold on wood framing were scrubbed."

Juliette C on May 2024

Quality Service You Can Count On! If you are experiencing water damage, mold or fire damage problems, or simply are just looking to remodel your kitchen or bathroom, Pure Restoration can help you! Our experts are highly knowledgeable with mold testing, structural restoration & remediation, including reconstruction for water damage or fire damage, water extraction and services. Pure can deal with virtually any project and takes pride in leaving our customers satisfied! We offer FREE inspections and estimates for your residential home or commercial property. With over 20 years of experience in the industry, Pure Restoration delivers advanced and reliable professional restoration services including mold inspections and testing throughout Los Angeles.

"The job went smoothly and was completed in a timely manner. The places where there was mold were identified and the drywall and/or insulation were removed. Any mold on wood framing were scrubbed."

Juliette C on May 2024


Avatar for Restoration 1 of Huntington Beach
Restoration 1 of Huntington Beach
New on HomeAdvisorNew on Angi
Approved Pro
Restoration 1 of Huntington Beach
New on AngiNew on HomeAdvisor
Approved Pro
154 local quotes requested
5 years of experience

Along with offering fire, water, and mold damage restoration services, the team at Restoration 1 also provides emergency services, storm damage services, sewage system cleanup and more! Our IICRC and IAQA licensed restoration professionals can address your problems in no time. For over a decade, we have been in the business of restoring damaged residential and commercial properties to their former glory.

Along with offering fire, water, and mold damage restoration services, the team at Restoration 1 also provides emergency services, storm damage services, sewage system cleanup and more! Our IICRC and IAQA licensed restoration professionals can address your problems in no time. For over a decade, we have been in the business of restoring damaged residential and commercial properties to their former glory.

...
Showing 1-10 of 987

FAQs for mold & toxic material test projects in San Francisco, 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 Francisco, 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.
sump pump radon gas removal system in basement of home
Jun 29, 2025
Jun 29, 2025
Radon mitigation systems help protect your home from harmful gas buildup by reducing indoor radon levels. Learn about costs, types, and hiring a professional.
radon gas testing equipment
Jun 25, 2025
Jun 25, 2025
Budget for radon inspection costs based on factors such as home size, geographic location, testing kit costs, labor, mitigation, and more.
Professional in protective suit removing mold from home
Jun 24, 2025
Jun 24, 2025
Budget for mold remediation costs based on factors such as severity, location in the home, type of mold, damage type, and more.
Two professionals removing asbestos from a roof
Apr 26, 2025
Apr 26, 2025
Asbestos testing costs depend on the size of your home, its condition, and your location. This test ensures your home is safe from this hazardous material.
professional in protective suit removing asbestos from attic of home
Apr 25, 2025
Apr 25, 2025
Concerned about asbestos in your home? Learn how to identify, manage, and safely remove this hazardous material with expert guidance on abatement methods, regulations, and best practices.
professional testing for toxic lead in home
Apr 26, 2025
Apr 26, 2025
Budget for lead paint inspection costs based on factors such as home size, location, home condition, repairs and removal, additional tests, and more.
Share project details to get started.