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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 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."
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Additional Photos

+32

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

You’ve stored your coats away all summer long, but now that the temperatures drop, you notice they smell weird as you pull them from storage. What’s the deal? If your clothes smell weird after you stored them, they may have been in a moist, dark environment for several weeks or months. This environment is ideal for mildew growth, which can make clothes smell musty.

Mold grows at the fastest rate the environment it’s in will let it. The space between your vinyl flooring and the base flooring it’s on is a perfect environment for mold growth, allowing for rapid spread and contamination. Preventing this involves a proper installation of the flooring and constant humidity control.

Thorough inspection, air quality tests, and surface sampling to detect mold presence and levels.

Figuring out why you have a musty smell in your house is the first step to getting rid of it. Mold or mildew is most likely causing the unpleasant odor. People use these terms interchangeably, but they’re actually different.

Mold is a fungus that loves to grow in moist, humid places. It’s typically black or green and has a raised, uneven texture. Stay vigilant for signs mold may be growing in your home. 

You’ll find mildew growing on your shower walls and in your bathroom’s nooks and crannies. It’s a specific type of mold that grows flat. Mildew is usually white, gray, or yellow.

In most cases, it is safe to return home after mold remediation is complete. You should follow your mold remediation technician’s recommendations, but most pros request that homeowners wait one day after the process is complete to move back in.

After returning home, be sure to carefully inspect the exposed areas for any remaining signs of mold spores. Contact the mold remediation company if you detect any lingering mold.

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.