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TRUSTED BY CUPERTINO, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon33
    Verified mold testing and remediation services reviews

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

Avatar for Certified-Environmental
Certified-Environmental
4.6(
28
)
Mold & Toxic Material TestMold & Toxic Material Test - For Business

Serving Cupertino, CA and surrounding areas

Approved

In business since 1990

Free estimates

Offers commercial services

"Richard Gray and his daughter Jayce, also a certified environmentalist, were punctual for our appointment and very thorough with sample testing and air quality testing. They were very patient in explaining their process and answered all my questions without hesitation. I would highly recommend them to anyone seeking air quality testing and mold abatement."
Response time4 hrs
Recommended by96%of homeowners
Avatar for Environmental Science Services
Environmental Science Services
4.5(
42
)
Mold & Toxic Material TestIndoor Air Quality TestingMold & Toxic Material Test - For Business

Serving Cupertino, 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
10 neighbors recently requested a quote
Recommended by97%of homeowners
RC Janitorial Restoration
3.6(
236
)
Dry-rot, Water or Pest Damage - Major RepairIndoor Air Quality TestingMold & Toxic Material Test+3 more

Serving Cupertino, CA and surrounding areas

Approved

In business since 1975

Free estimates

Customers say: True professional

"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."
Additional Photos
Additional Photos
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Additional Photos
Additional Photos

+12

Recommended by80%of homeowners
Avatar for Rubios Restoration
Rubios Restoration
5.0(
4
)
Toxicity and Mold - Removal

Serving Cupertino, CA and surrounding areas

Approved

Free estimates

Offers commercial services

We specialize in helping homeowners with water damage restoration emergencies. From emergency water extraction to drying and restoring your property, Rubios Restoration is here to make the process easier for you.\n\nOur goal is to respond quickly, minimize the damage, and help you get your home back to normal as soon as possible. Whatever your water emergency, we are here to help.\n

Water damage
Mold job
Mold job
Mold job
Mold job

+5

1 neighbors recently requested a quote
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Mold Testing and Remediation FAQs, answered by experts

Yes, limewash is free of volatile organic compounds (VOCs). Made of lime and water, it is eco-friendly, breathable, and toxin-free. Most synthetic paints have low to high levels of VOCs, which causes their irritating odor, which can have adverse and long-term effects on your health. Conversely, limewash consists of crushed limestone, which undergoes burning, mixing, and aging before being diluted with water—natural pigments add coloration.

Yes, both mold and mildew can grow under outdoor rugs if they are exposed to water or humidity for a prolonged period of time. This is why frequently cleaning an outdoor rug and checking its state is important.

Yes, you can use bleach to remove mold from your aluminum siding, but it’s a powerful cleaning agent, so make sure it’s diluted with water first. A solution of one part bleach and four or five parts water works well. But it’s still a good idea to start by cleaning a small, inconspicuous area of the siding to make sure that the solution doesn’t cause damage or discoloration. 

While mold in the bathroom can appear black, it isn’t always the dangerous black mold strain Stachybotrys chartarum. This type of mold typically appears after a flood or a long-term leak. If you suspect black mold, you should get it tested by a local mold testing service to determine whether it’s safe to remove yourself.

Underfloor insulation alone will not cause moisture and mold, but improper installation can. Although the purpose is to seal any drafts, your subfloor still needs ventilation. If you seal the area too tightly and prevent all airflow, this can cause moisture to get trapped. This moisture eventually leads to mold and—if your floors are wood—rotting.

The Cupertino, 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.