Top-rated mold testing and remediation specialists.

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TRUSTED BY PORTOLA VALLEY, CA HOMEOWNERS

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  • Verified reviews icon12
    Verified mold testing and remediation services reviews

Find Mold testing and remediation specialists in Portola Valley

Avatar for Restoration Pro's

Restoration Pro's

5.00(
2
)
Approved Pro

Restoration Pro's

5.00(
2
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
83 local quotes requested

Restoration Pros specializes in residential water damage restoration and mold mitigation from bathroom leaks, mold in garage, bedroom and kitchen. We are owner operated, servicing the entire Bay Area. Our goal is dry your property quickly killing and removing any mold damage and get your property back to pre-loss condition so you can get back to doing what you do, uninterrupted. Our team of professionals always move promptly. When it comes to water leaks, more time equals more damage. For these reasons we always move swiftly to stop the damage from spreading.

"Tech did a great job Very thorough & hard working employee"

Elberta M on May 2025

Restoration Pros specializes in residential water damage restoration and mold mitigation from bathroom leaks, mold in garage, bedroom and kitchen. We are owner operated, servicing the entire Bay Area. Our goal is dry your property quickly killing and removing any mold damage and get your property back to pre-loss condition so you can get back to doing what you do, uninterrupted. Our team of professionals always move promptly. When it comes to water leaks, more time equals more damage. For these reasons we always move swiftly to stop the damage from spreading.

"Tech did a great job Very thorough & hard working employee"

Elberta M on May 2025


RC Janitorial Restoration

2786 Eulalie Dr
4.33(
3
)
Approved Pro

RC Janitorial Restoration

2786 Eulalie Dr
4.33(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
80 local quotes requested

RC Janitorial Restoration specializes in fire and water damage restoration, offering fast, reliable, and professional services to restore homes and businesses after disasters. Our experienced team handles everything from cleanup and debris removal to complete restoration, ensuring your property is safe, dry, and back to normal. With a focus on quality and customer care, we provide efficient, comprehensive solutions to mitigate damage and prevent further issues. Call or 'click' for a FREE estimate today!

"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."

Bloodtestcentersusa.com U on September 2025

RC Janitorial Restoration specializes in fire and water damage restoration, offering fast, reliable, and professional services to restore homes and businesses after disasters. Our experienced team handles everything from cleanup and debris removal to complete restoration, ensuring your property is safe, dry, and back to normal. With a focus on quality and customer care, we provide efficient, comprehensive solutions to mitigate damage and prevent further issues. Call or 'click' for a FREE estimate today!

"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."

Bloodtestcentersusa.com U on September 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
76 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


Frontier Microscopy

3491 20th St
No reviews yet

Frontier Microscopy

3491 20th St
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.


Mold inspection service

3600 Granby Drive
No reviews yet

Mold inspection service

3600 Granby Drive
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.


California Healthy Home Inspections, LLC

1799 Old Bayshore Hwy
No reviews yet

California Healthy Home Inspections, LLC

1799 Old Bayshore Hwy
No reviews yet
5 years of experience

We are a family-owned business with a professional team that comes out to you at your location and performs various types of Toxin Inspections like Mold, Asbestos, Lead, Radon, and Consulting Services related to indoor air quality, serving residential, SML commercial, and real estate clients. An ounce of prevention is better than a pound of cure, don't medicate, and let us investigate because our health is the most important asset we have, from what you breathe to what you touch, helping you improve your Indoor Air Quality and create a safe environment for occupants. Using Scientific Technologies & Equipment and the labs to inspect, detect and deliver the full analytical reports in a quick turnaround time. We stand behind our work and strive to exceed your expectations. It is our goal to win over every client every time, treating our customers how we would expect to be treated. Our motto, KNOWLEDGE IS POWER!

We are a family-owned business with a professional team that comes out to you at your location and performs various types of Toxin Inspections like Mold, Asbestos, Lead, Radon, and Consulting Services related to indoor air quality, serving residential, SML commercial, and real estate clients. An ounce of prevention is better than a pound of cure, don't medicate, and let us investigate because our health is the most important asset we have, from what you breathe to what you touch, helping you improve your Indoor Air Quality and create a safe environment for occupants. Using Scientific Technologies & Equipment and the labs to inspect, detect and deliver the full analytical reports in a quick turnaround time. We stand behind our work and strive to exceed your expectations. It is our goal to win over every client every time, treating our customers how we would expect to be treated. Our motto, KNOWLEDGE IS POWER!


Southwest Shine

4078 W Campbell Ave
5.00(
12
)

Southwest Shine

4078 W Campbell Ave
5.00(
12
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Family owned and operated with a wide range of services to best-fit your solar panel, soft wash roof, gutters, home and exterior restoration and repair needs. Our services improve the value of your property by 5 to 10 percent according to The National Association of REALTORS®. Our team has the knowledge and uses the proper methods to clean your surfaces correctly with our two-phase system and without damage, where so many others apply too much pressure damaging and voiding ant warranty that may have come with the product or material. We will explain the best process to you upfront. We follow Federal and State laws, the local water recovery regulations here in California to make sure to keep our environment clean and homeowners covered under EPA regulations (clean water act). With the California water situation we have customized our solution and methods to save water by relying on a stronger solution to do the work and some extra prep work so the solution can concentrate on the deeper clean. We will explain the process and what to expect with you the customer so you have a complete understanding of our methods. Our solutions not only cleans and eradicate organic growth material but deters and helps destroy termites according to research and pest control systems and services so a roof and or house wash not only gets rid of harmful and unhealthy organic growth material but helps to kill and prevent termites as well, our solution introduces a unfriendly environment where they will not build their homes or colonies and direct contact will eradicate them. At Southwest Shine, our focus is on exceptional property management and maintenance of residential and commercial properties in the Bay Area. If you own a residential or commercial investment property and are looking for professional management and maintenance look no further! We provide full services that save you tens of thousands in major repairs or replacement cost. Our reputation is the best in the area – just ask our current clients. With our methods we help prolong your roof lifespan 10, 15 and even 20 years in some cases. During any of our processes we inspect the property and on roof washing we repairs and exposed nails, cracked tiles and check vents and flashing at no extra cost to you which no other sanitizing soft or pressure washing company does. We feel this is a must to protect the customers property and make sure or sure last longer and is more cost efficient than anyone in the industry.

"David did a great job for a reasonable price!"

Bruce O on December 2021

Family owned and operated with a wide range of services to best-fit your solar panel, soft wash roof, gutters, home and exterior restoration and repair needs. Our services improve the value of your property by 5 to 10 percent according to The National Association of REALTORS®. Our team has the knowledge and uses the proper methods to clean your surfaces correctly with our two-phase system and without damage, where so many others apply too much pressure damaging and voiding ant warranty that may have come with the product or material. We will explain the best process to you upfront. We follow Federal and State laws, the local water recovery regulations here in California to make sure to keep our environment clean and homeowners covered under EPA regulations (clean water act). With the California water situation we have customized our solution and methods to save water by relying on a stronger solution to do the work and some extra prep work so the solution can concentrate on the deeper clean. We will explain the process and what to expect with you the customer so you have a complete understanding of our methods. Our solutions not only cleans and eradicate organic growth material but deters and helps destroy termites according to research and pest control systems and services so a roof and or house wash not only gets rid of harmful and unhealthy organic growth material but helps to kill and prevent termites as well, our solution introduces a unfriendly environment where they will not build their homes or colonies and direct contact will eradicate them. At Southwest Shine, our focus is on exceptional property management and maintenance of residential and commercial properties in the Bay Area. If you own a residential or commercial investment property and are looking for professional management and maintenance look no further! We provide full services that save you tens of thousands in major repairs or replacement cost. Our reputation is the best in the area – just ask our current clients. With our methods we help prolong your roof lifespan 10, 15 and even 20 years in some cases. During any of our processes we inspect the property and on roof washing we repairs and exposed nails, cracked tiles and check vents and flashing at no extra cost to you which no other sanitizing soft or pressure washing company does. We feel this is a must to protect the customers property and make sure or sure last longer and is more cost efficient than anyone in the industry.

"David did a great job for a reasonable price!"

Bruce O on December 2021


Emergency Handyman

54 N 5th St
5.00(
2
)

Emergency Handyman

54 N 5th St
5.00(
2
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Tharp Environmental provides licensed pest control, insulation, and disinfection services in San Jose and across the Bay Area. We are qualified professionals trained to provide fast, safe, and effective solutions to all of your residential and commercial issues, including rodent infestations, lack of attic insulation, and mold growth. Our highly communicative team specializes in personalized service plans designed to meet your needs. We sit down with every customer to make sure that we understand their unique situation, then come up with a plan to exceed their highest expectations. Plus, with same-day service, free quotes, and affordable rates, we make it easy to get the services you need, when you need them. Call today to get started!

"Removed 50 feet of mold inside the garage and cleaned rat poop. Service was expensive but they were very professional."

Tyrica C on September 2020

Tharp Environmental provides licensed pest control, insulation, and disinfection services in San Jose and across the Bay Area. We are qualified professionals trained to provide fast, safe, and effective solutions to all of your residential and commercial issues, including rodent infestations, lack of attic insulation, and mold growth. Our highly communicative team specializes in personalized service plans designed to meet your needs. We sit down with every customer to make sure that we understand their unique situation, then come up with a plan to exceed their highest expectations. Plus, with same-day service, free quotes, and affordable rates, we make it easy to get the services you need, when you need them. Call today to get started!

"Removed 50 feet of mold inside the garage and cleaned rat poop. Service was expensive but they were very professional."

Tyrica C on September 2020



All Star Mold Testing and Water Damage Inc.

712 Bancroft Rd
No reviews yet

All Star Mold Testing and Water Damage Inc.

712 Bancroft Rd
No reviews yet
24 years of experience

Mold Testing, Consulting & Remediation Water Damage Investigation & Drying Services Bio-Hazard Cleanup Sewage Cleanup Crime Scene Cleanup Hoarder Cleanup Homeless camp cleanup

Mold Testing, Consulting & Remediation Water Damage Investigation & Drying Services Bio-Hazard Cleanup Sewage Cleanup Crime Scene Cleanup Hoarder Cleanup Homeless camp cleanup

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Mold Testing and Remediation questions, answered by experts

Mold and mildew are the things in basements that actually cause the musty odors, but moisture is the underlying issue that causes mold and mildew growth. Addressing moisture and water problems and then removing materials that are moldy are some of the best ways to get rid of the musty odors. Preventive measures after that—like installing air fresheners and a dehumidifier—can help keep musty odors from returning.

Mold remediation is required if the mold growth covers more than 10 square feet of an area or the mold spore concentration is above 500 spores per cubic meter of air. You should also seriously consider remediation if there is a lot of water damage along with mold growth or if you suspect your HVAC system has been contaminated with mold. Remediation is also crucial if the mold damage has been caused by sewage or other contaminated water.

Mold can come back after cleaning, especially if the conditions are right. Mold loves moist environments, so if you clean a piece of furniture, then put it back in a humid area, the mold can return. Mold may also return if you missed an area during cleaning. A professional mold remediation company can help ensure that the mold is gone for good.

Some mold can look like dust, but most doesn’t. Powdery mildew is often confused with dust as it’s a similar color and grows in a similar way. Some gray molds can look like dust as well, but usually, it’s pretty easy to spot the difference. It’s better to be safe, so if you aren’t completely sure what you’re seeing is dust, call a mold professional to check it out.

Water damage doesn’t always cause mold and wood rot, but it can. Both mold and wood rot require moisture in the wood to form, so water damage that continues to leave water or moisture behind can lead to both issues. Water damage and mold often go hand-in-hand, but you can prevent mold growth after water damage by addressing the source of moisture and drying out the area quickly. The same goes for wood rot. The longer you let water damage go, the higher the risk of mold and rot.

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The Portola 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.