Top-rated mold testing and remediation specialists.

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TRUSTED BY MILL VALLEY, CA HOMEOWNERS

  • Average homeowner rating star icon5
    Average homeowner rating
  • Verified reviews icon16
    Verified mold testing and remediation services reviews

Find Mold testing and remediation specialists in Mill Valley

Insight Environmental

5.00(
16
)
Approved Pro

Insight Environmental

5.00(
16
)
Approved Pro
Customers say: Quick response
16 local quotes requested
23 years of experience

Here at Insight Environmental we are a full service inspection and testing/abatement company. With out experience and attention to detail we are a great choice for making sure you understand your property as well as making sure your property is safe. Call now for a consultation.

"Many people advised me not to contact a Mold Inspector, because â They always find moldâ . These are people who donâ t go to dentists because they might find cavities. The first time I hired Steve Ramos, he found â No Moldâ on the property I asked him to inspect so I knew I could trust him. This year I suspected I had mold in my rental property and wanted to be sure my pregnant tenant was safe. Steve not only found the source of mold, he told me exactly what type of mold I was dealing with, what the risks were to my tenant and unborn child, and what steps I needed to take to eliminate it. He was always available, and still is, to answer my questions and work with my contractor to insure a safe environment for my tenants and their baby. Nobody wants to have to call a mold inspector, but if you do, I urge you to call Steve Ramos. He is not only excellent on a professional level, he is also honest and caring on a personal, human level and goes way beyond his job description to help his clients."

Maria M on June 2023

Here at Insight Environmental we are a full service inspection and testing/abatement company. With out experience and attention to detail we are a great choice for making sure you understand your property as well as making sure your property is safe. Call now for a consultation.

"Many people advised me not to contact a Mold Inspector, because â They always find moldâ . These are people who donâ t go to dentists because they might find cavities. The first time I hired Steve Ramos, he found â No Moldâ on the property I asked him to inspect so I knew I could trust him. This year I suspected I had mold in my rental property and wanted to be sure my pregnant tenant was safe. Steve not only found the source of mold, he told me exactly what type of mold I was dealing with, what the risks were to my tenant and unborn child, and what steps I needed to take to eliminate it. He was always available, and still is, to answer my questions and work with my contractor to insure a safe environment for my tenants and their baby. Nobody wants to have to call a mold inspector, but if you do, I urge you to call Steve Ramos. He is not only excellent on a professional level, he is also honest and caring on a personal, human level and goes way beyond his job description to help his clients."

Maria M on June 2023


Avatar for Viva Property Restoration

Viva Property Restoration

4.93(
30
)
Approved Pro

Viva Property Restoration

4.93(
30
)
Approved Pro
Super Service Award
Customers say: Quality work
22 local quotes requested
5 years of experience

VIVA Property Restoration is the North Bay’s most trusted water damage mitigation, mold remediation, and fire restoration service. ‘VPR’ provides property damage solutions to all of Sonoma, Marin and Napa County. All properties are welcome, both residential and commercial. We take pride in always being safe, thorough and professional with every project that we complete. Call us today to schedule your next consultation.

"Great customer service! Cost was very reasonable. Andy was very professional and approachable. Great communication, always took the time to update on work progress and to answer questions. Very happy with results and how they cleaned up after the work was finished. Highly recommend!"

SOFIA C on July 2025

VIVA Property Restoration is the North Bay’s most trusted water damage mitigation, mold remediation, and fire restoration service. ‘VPR’ provides property damage solutions to all of Sonoma, Marin and Napa County. All properties are welcome, both residential and commercial. We take pride in always being safe, thorough and professional with every project that we complete. Call us today to schedule your next consultation.

"Great customer service! Cost was very reasonable. Andy was very professional and approachable. Great communication, always took the time to update on work progress and to answer questions. Very happy with results and how they cleaned up after the work was finished. Highly recommend!"

SOFIA C on July 2025


Curtis Roberts AAA Mold Inspection

5.00(
2
)
Approved Pro

Curtis Roberts AAA Mold Inspection

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
31 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 Bio 911

Bio 911

5.00(
17
)
Approved Pro

Bio 911

5.00(
17
)
Approved Pro
Super Service Award
Customers say: Quick response
48 local quotes requested
7 years of experience

Bio 911 is your trusted, local source for water, mold, and biohazard cleanup services throughout the San Francisco Bay Area. We are an IICRC-Certified firm that is ready to help you recover from water and storm damage, mold contamination, hoarding and crime scenes, and more. Our state and OSHA-certified staff use only the safest, EPA-compliant products to help clean and sanitize your living environment. We proudly offer 24/7 live calls as well as expedited response times for emergency situations. We also offer additional cleaning and support services designed to give you peace of mind throughout the recovery process. Since 2018, Bio 911 has helped homeowners and businesses remove and recover from harmful substances of all kinds. We are more than ready to help you. Fill out the form on this page or call us today to get a FREE, on-site estimate.

"vital information regarding source of problem was not provided in a timely manner resulting in additional expenses"

Nancy O on February 2025

Bio 911 is your trusted, local source for water, mold, and biohazard cleanup services throughout the San Francisco Bay Area. We are an IICRC-Certified firm that is ready to help you recover from water and storm damage, mold contamination, hoarding and crime scenes, and more. Our state and OSHA-certified staff use only the safest, EPA-compliant products to help clean and sanitize your living environment. We proudly offer 24/7 live calls as well as expedited response times for emergency situations. We also offer additional cleaning and support services designed to give you peace of mind throughout the recovery process. Since 2018, Bio 911 has helped homeowners and businesses remove and recover from harmful substances of all kinds. We are more than ready to help you. Fill out the form on this page or call us today to get a FREE, on-site estimate.

"vital information regarding source of problem was not provided in a timely manner resulting in additional expenses"

Nancy O 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
105 local quotes requested

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 Sherlock Homes and Mold Inspection

Sherlock Homes and Mold Inspection

4.71(
19
)
Approved Pro

Sherlock Homes and Mold Inspection

4.71(
19
)
Approved Pro
Customers say: True professional
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
25 local quotes requested

WE ARE CURRENTLY PROVIDING MOLD AND HOME INSPECTIONS. CALL US TO SCHEDULE OR DISCUSS AT 707-999-3400. We’re committed to keeping our community safe by taking guidance from the CDC. Sherlock provides a free and friendly phone consultation. We are experts in the dangers of abnormal mold growth, radon, allergens, smoke damage, EMF and other indoor air quality problems. Many of our clients are referred to us by their doctors, since we provide specialized indoor air quality testing using DNA mold testing protocols (ERMI). Beware of persons offering to also remediate, since it is a code of ethics violation in our industry.

"Very thorough and detailed great customer service"

Sandra M on January 2024

WE ARE CURRENTLY PROVIDING MOLD AND HOME INSPECTIONS. CALL US TO SCHEDULE OR DISCUSS AT 707-999-3400. We’re committed to keeping our community safe by taking guidance from the CDC. Sherlock provides a free and friendly phone consultation. We are experts in the dangers of abnormal mold growth, radon, allergens, smoke damage, EMF and other indoor air quality problems. Many of our clients are referred to us by their doctors, since we provide specialized indoor air quality testing using DNA mold testing protocols (ERMI). Beware of persons offering to also remediate, since it is a code of ethics violation in our industry.

"Very thorough and detailed great customer service"

Sandra M on January 2024


Frontier Microscopy

No reviews yet

Frontier Microscopy

No reviews yet
Emergency services offered

We have requested Angi to delete this profile. Angi called us an employed high pressure sales tactics to attempt to sell us a $50,000 per year advertising package, inferring that our profile would not be live without it. They also called us at 6.30am every day, despite our profile clearly being based in the west coast.

We have requested Angi to delete this profile. Angi called us an employed high pressure sales tactics to attempt to sell us a $50,000 per year advertising package, inferring that our profile would not be live without it. They also called us at 6.30am every day, despite our profile clearly being based in the west coast.


Avatar for 3 Step Restoration

3 Step Restoration

No reviews yet

3 Step Restoration

No reviews yet
Free onsite estimate

Here at 3 Step Restoration we specialize in mold removal/remediation and water damage losses. All of our certified technicians are detailed oriented and are pushed to providing you the best service. This is a new company owned by a certified professional with years of experience.

Here at 3 Step Restoration we specialize in mold removal/remediation and water damage losses. All of our certified technicians are detailed oriented and are pushed to providing you the best service. This is a new company owned by a certified professional with years of experience.


Mold inspection service

No reviews yet

Mold inspection service

No reviews yet
4 years of experience

A thorough mold inspection is the starting point for any suspected mold related issue. Without mold testing, there is no way to accurately determine how bad your mold problem is or if one exists at all. Mold Inspection Service inspectors are trained to conduct thorough investigations to determine if you have mold, how bad it is, how to properly get rid of it and how to prevent it from returning. If you suspect you have mold in your home, basement, attic or commercial building, or are concerned about black mold or toxic mold, call Mold Inspection Service today to schedule a certified mold inspection. We also offer indoor air quality assessments with mold testing and will come take air samples to determine if your indoor mold spore levels are higher than they should be. If you are concerned with your indoor air quality, air testing will provide the necessary answers to your mold related questions. Book now at https://www.moldinspectionservice.net/schedule-inspection or call 916-308-4853 to speak with a person and schedule.

A thorough mold inspection is the starting point for any suspected mold related issue. Without mold testing, there is no way to accurately determine how bad your mold problem is or if one exists at all. Mold Inspection Service inspectors are trained to conduct thorough investigations to determine if you have mold, how bad it is, how to properly get rid of it and how to prevent it from returning. If you suspect you have mold in your home, basement, attic or commercial building, or are concerned about black mold or toxic mold, call Mold Inspection Service today to schedule a certified mold inspection. We also offer indoor air quality assessments with mold testing and will come take air samples to determine if your indoor mold spore levels are higher than they should be. If you are concerned with your indoor air quality, air testing will provide the necessary answers to your mold related questions. Book now at https://www.moldinspectionservice.net/schedule-inspection or call 916-308-4853 to speak with a person and schedule.


Avatar for A & C NOMA CONSTRUCTION INC

A & C NOMA CONSTRUCTION INC

5.00(
3
)

A & C NOMA CONSTRUCTION INC

5.00(
3
)
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and customer service is our always our top concern. Call or click to schedule a free estimate today!

"It went seamlessly , that's why I always call them. They are great at communication, they are returning calls and emails, keeping me updated if there's any changes , taking consideration of the budget. They are really great to work with."

Carol M on April 2022

We have the experience and dedication to bring your dreams to reality! We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and customer service is our always our top concern. Call or click to schedule a free estimate today!

"It went seamlessly , that's why I always call them. They are great at communication, they are returning calls and emails, keeping me updated if there's any changes , taking consideration of the budget. They are really great to work with."

Carol M on April 2022

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Mold Testing and Remediation questions, answered by experts

Mold in HVAC ducts is a relatively common issue that homeowners struggle with—especially in humid climates or homes with poor ventilation. Moisture from condensation, combined with dust and organic debris, creates the perfect environment for mold growth. Homes with high humidity, leaky ducts, or clogged drains are more prone to this issue. Regular inspections and proper HVAC maintenance significantly reduce the risk of mold developing in your ducts.

Mold inspections cost anywhere from $300 to $1,025, depending on the type of mold, the extent of the area that requires testing, your location, and the accessibility of the affected area. A mold inspection is an important part of the overall process, helping determine the scope of the problem and understanding the best remediation method based on the type of mold discovered.

If you see mold spores on walls, flooring, or ceilings, it’s best to call in a mold inspection pro to investigate. Similarly, if you smell signs of mold—musty, earthy, rotting wood, or stale scents—it’s time to call a mold inspection professional. 

Other less-obvious times when you should have your home inspected for mold include:

  • After flooding

  • After home water damage

  • Having ceiling or wall damage

  • Buying or selling a home

  • After a persistent unexplained cough or allergy symptoms 

  • Noticing discolored surfaces

You can do a basic home water test, but we recommend having a pro conduct a more in-depth test. This method is accurate, and you’ll have a pro who knows your house helping you determine a plan of attack for anything out of the ordinary.

Wood rot and mold are related but not equal. Wood rot specifically refers to the decay of wood caused by fungi, compromising its structural integrity. Mold, including black mold, is a type of fungus that can grow on various surfaces, including wood. While wood rot involves the deterioration of the wood itself, mold, including black mold, can grow on both rotting and non-rotting wood, making them interconnected but distinct issues.

The Mill Valley, CA homeowners’ guide to mold testing and remediation services

From average costs to expert advice, get all the answers you need to get your job done.