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Best mold testing and remediation specialists near Arcata, CA

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

Avatar for Environmental Science Services
Environmental Science Services
4.5(
42
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Arcata, CA and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"I experienced a quality of knowledge as well as caring for my concerns about mold in my home. The problem was quickly resolved and the communication excellent. I was so pleased that traveling did not present a problem and I am so happy to feel a professional has handled a difficult problem and done that in a timely and knowledgeable manner. Thank you so much for the experience."
interior
IAQ
Clandestine Laboratory Investigation
Wipe Testing for Asbestos
Water Intrusion Mold Testing

+3

Response time8 hrs
7 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Walker's Home and Commercial Inspections
Walker's Home and Commercial Inspections
4.7(
6
)
Indoor Air Quality TestingMold & Toxic Material TestMold & Toxic Material Test - For Business

Serving Arcata, CA and surrounding areas

In business since 2017

Free estimates

Emergency services offered

"I hired Walker's Home & Commercial Inspections because I was putting my older home on the market and wanted to know what repairs, if any, needed to be completed before selling. Mr. Walker pointed out several deficiencies. There was earth/wood contact below the kitchen window and some wiring that was done incorrectly. These items were corrected and the home is on the market. Thanks to the thorough inspection, a buyer will know the home was inspected and repairs done."
Inspecting
At an inspection
Response time7 hrs
Response rate100%
Recommended by100%of homeowners
Avatar for Landmark Energy Upgrades
Landmark Energy Upgrades
4.8(
59
)
Indoor Air Quality TestingMold & Toxic Material TestMold & Toxic Material Test - For Business+2 more

Serving Arcata, CA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"We received the phone number of this company from a friend that hired them and he was able to reduce his utilities bills by doing an efficiency audit that includes covering all the openings at the house (windows, HVAC, Doors etc.?.) and then with a machine, running the test and to see from where the house is losing most of the energy and to perform a repair that will prevent that in the future. Ezra and his team of workers came to perform the test and to see what need to be repaired or improved. The audit took close to 5 hours and then the machine that they used worked for additional 2 plus hours. After that was completed, we saw clearly that the problem was the windows and the HVAC. Ezra recommended us to perform a repair to both of them and then to run the test again. After the workers of them finished the repair, Ezra came once again and did the test. He was pleased with the results and so as we. During all the work, we saw how it was before and how it was after. We do recommend this company for that type of work! They are professional and honest people to hire and they carry all the relevant licenses as well."
Cool Roof Install
Energy Upgrade
HVAC Air Duct
Home Energy Audit
Energy Upgrade Contractors

+6

Recommended by98%of homeowners
Avatar for 911 Restoration of Redding - Unlicensed Contractor
911 Restoration of Redding - Unlicensed Contractor
5.0(
1
)
Mold & Toxic Material TestToxicity and Mold - Removal

Serving Arcata, CA and surrounding areas

In business since 2019

Free estimates

Emergency services offered

"Very hardworking, punctual and polite. Isaac is clearly very knowledgeable in his field. He genuinely cares about getting the job done correctly and efficiently. Price was fair. I would definitely call him again and recommend his services to others. Top notch!"
Recommended by100%of homeowners
Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)
Dry-rot, Water or Pest Damage - Major Repair

Serving Arcata, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Excellent Service from planning through Execution and installation to final fine tuning. The folks communicated well and explained every detail of the step. Got permit and inspection done. It was seamless. Thanks. R."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+32

Recommended by100%of homeowners
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Mold Testing and Remediation FAQs, answered by experts

When you smell something, it’s because the particles of what you are smelling are floating through the air. If you smell mold, it means that it’s airborne, and whether or not it’s harmful depends on the type of mold. It’s very hard to tell the difference between molds, even with the internet to guide you. Call a professional as soon as you see mold, they will test it, remove it, and make sure you aren’t breathing anything harmful.

Professionals suggest through ventilation, source removal, or filtration systems.

It is not advisable to stay in a house with black mold. Exposure to black mold, or any mold, can lead to health problems, especially for vulnerable individuals such as children, the elderly, or those with weakened immune systems. Black mold produces mycotoxins, which can cause respiratory issues, skin irritation, fatigue, and headaches. If black mold is detected, it is crucial to evacuate the premises, seek professional help for remediation, and only return once the area is thoroughly cleaned and confirmed mold-free by experts.

Most grass mold isn’t harmful to humans. Slime molds in particular aren’t toxic and may even possess some benefits. Other molds, like powdery mildew and snow mold, generally aren’t a concern, but can still cause allergic reactions and respiratory distress in those with high allergy risk and compromised immune systems.  

Vermiculite insulation can be hazardous if it contains asbestos. Asbestos fibers, when released into the air and inhaled, can pose significant health risks. The EPA recommends leaving vermiculite insulation undisturbed to avoid potential exposure. It is crucial to have vermiculite insulation tested by a certified professional to determine if it contains asbestos. If asbestos is present, proper precautions should be taken, including containment or removal by licensed abatement professionals.

The Arcata, 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.