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TRUSTED BY BREA, CA HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon12
    Verified mold testing and remediation services reviews

Top-Rated Mold testing and remediation specialists in Brea - Updated Nov 2026

Avatar for Mold Neutralizers
Mold Neutralizers
4.8(
72
)
Mold & Toxic Material TestMold & Toxic Material Test - For Business

Serving Brea, CA and surrounding areas

Approved

In business since 2014

Emergency services offered

Small jobs welcome

"Working with Lee and his team has been a truly exceptional experience! I personally had mycotoxin so I understand the dangerous and debilitating effect mold can have on peopleâ s lives. We hired Lee and his team for mold inspection when we were considering buying a house. We contacted Lee when we were on day 3 of our 10-day inspection period. Despite his busy schedule, Lee squeezed time to come by the house. Professional and patient, Lee answered all my questions with expert knowledge regarding the test results and the proposed remediation plan. The house we were trying to buy doesnâ t have mold to an alarming level, but I was determined to rid of them for my familyâ s health. Lee and his team did an excellent job for the remediation and they shared so much professional knowledge with us, which I greatly appreciate. We liked their work ethic so much that we hired them again to do HEPA vacuuming for the house after some remodeling projects. Again, Lee always patiently answered every single one of my questions with great depth of knowledge. We had some issues with contractor delays and Leeâ s team was very understanding and accommodated our updated schedules several times with their very busy schedule. The ozone treatment has greatly reduced the odor from remodeling, which was already minimal from using zero VOC paint and flooring. Again, we liked their work so much that we asked for their help to deodorize our new car. Lee and his team are exceptional not only in their expertise knowledge in mold but also their work ethic; they are punctual, they prepare their clients before each visit, and they follow up after each visit. We cannot say enough praise about Lee and his team!"
Mold Inspection
Mold Inspection
Mold Inspection
Moisture detector
Single Family Home

+5

Response time2 days
10 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for 911 Certified Mold Testing LLC
911 Certified Mold Testing LLC
5.0(
8
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Brea, CA and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"A few months ago I used 911 certified mold testing for my home they were referred to me by my plumber. I had a great experience dealing with this company they were very professional and knowledgeable about mold testing. They were also reasonable in their pricing! I highly recommend using this company for mold testing."
Response time4 hrs
Response rate93%
1 neighbors recently requested a quote
Avatar for Pure Mold Masters
Pure Mold Masters
5.0(
8
)
Mold & Toxic Material TestToxicity and Mold - RemovalMold & Toxic Material Test - For Business+1 more

Serving Brea, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Warranties offered

"We discovered we had mold in our home after we had a leak. Matt and his team tested our home for mold, then we completed the dry fog remediation treatment. They gave me post tests to show the mold has all been killed. They were very thorough everything went just as planned. Excellent job, I am very impressed!"
House Fogs
House Fogs
House Fogs
House Fogs
Fog

+6

Response time9 hrs
Response rate92%
6 neighbors recently requested a quote
Avatar for Night And Day Restoration LLC
Night And Day Restoration LLC
5.0(
5
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Brea, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

Night & Day Restoration LLC specializes in water damage restoration and professional mold testing. Whether you're dealing with a leak, flooding, moisture concerns, or suspected mold, our team will assess the situation, explain what we find, and recommend the right next step.\nWe provide water extraction, structural drying, moisture detection, HEPA air filtration, mold air and surface testing, odor treatment, and structural cleaning. Our team is IICRC Water Restoration Technician (WRT) certified, and we pride ourselves on fast communication, detailed documentation, honest recommendations, and treating your home like it’s our own.\n

53 neighbors recently requested a quote
Avatar for Express Dry
Express Dry
5.0(
12
)
Mold & Toxic Material TestIndoor Air Quality TestingDry-rot, Water or Pest Damage - Major Repair+3 more

Serving Brea, CA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Noah scheduled an estimator to come to my house 30 minutes after my phone call. Moises came and gave me a reasonable price. He was prompt and courteous. The next day Hiram and Orge came to do the work. They were prompt and friendly. They did an excellent job removing the mold. Brian called me to keep me appraised of what they did and how long they will be leaving the dehumidifier and other drying equipment in the garage. This company is prompt, professional, and courteous and did an excellent job. I would definitely use them again."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

Response time1 day
Response rate100%
5 neighbors recently requested a quote
Pacific Environmental & Abatement Solutions Inc
4.6(
10
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business+2 more

Serving Brea, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"The tester was well versed in this area even showing the areas that were high in moisture. Very friendly and informative as well as professional. Made me comfortable with the experience she had. When the owner and maintenance worker failed she made me comfortable. Fae who had the credentials as well experience explained everything in detail. Definitely use Fae!!!"
1 neighbors recently requested a quote
Recommended by87%of homeowners
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Mold Testing and Remediation FAQs, answered by experts

Humidity, moisture, and a lack of ventilation can all cause mold to grow on surfaces in and around your home.

Asbestos fibers can stay airborne for 48 to 72 hours, depending on the home's ventilation. Fibers can linger longer in enclosed spaces with poor airflow. Because the fibers are microscopic, they can easily remain suspended, making them difficult to detect without professional equipment.

While the air inside your home should have some moisture—the ideal humidity level is between 30% and 50%—too much moisture can lead to issues. Some ways to tell if there’s too much moisture in your home include condensation inside your windows, mildew growth in the bathroom or mold on surfaces, peeling paint, or an uptick in allergy symptoms.

If you’re unsure whether you have mildew or mold, you can hire a professional to test the material. The mold inspection cost can range from about $300 to $1,000, depending on the size of the growth area. Once the testing professional tells you whether you have mold or mildew, you can then take the necessary steps to get rid of it.

Damp air from a humidifier can cause mold in ducts if it raises the air's humidity level too high for the duct system to handle or malfunctions, but it’s not a normal occurrence. To avoid mold trouble, set the humidistat to between 30% and 35% and inspect it often to ensure accuracy.

The Brea, 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.