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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

"Rich provides me with the best customer service I have ever experienced and always available for me when I had questions. Very thorough, knowledgeable, supportive and caring. When I've followed up with phone calls asking questions, Rich took the time to answer them and explain to me in detail. Rich is coordinating with my mold remediation company to ensure it gets done right. He truly cares about people and their health. We have special circumstances here and I feel I have someone on our side! If you ever have a need for this type of service, I highly recommend Rich. It doesn't get any better than that. If I can give him 6 stars, I will. Rich, Thanks again for all your help."
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
Additional Photos
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

Poor maintenance can cause some health concerns, although these are more common in commercial misters than residential versions. For example, stagnant water can become a breeding ground for bacteria, some of which can be dangerous to human health, especially when inhaled. Regular flushing of the system before seasonal use should prevent issues like these.

Otherwise, avoid using mosquito misters with pesticides or plant misters with fertilizers near humans. These misters are not designed for cooling sprays around decks or patios, but for more utilitarian purposes.

Water and electricity are a dangerous duo, so you should always proceed with caution as you inspect your washing machine and attempt to fix or replace any parts. We recommend working with a trained professional when you have a big leak on your machine to avoid fire risks from short-circuiting and electrocution from live wires in your appliance.

Yes, brown spots on a ceiling are usually caused by water leaks and can lead to mold growth, especially if you don’t correct the underlying problem. Ongoing water leaks and moisture issues will almost always result in mold growth, especially if you live in a warm climate. Mold is a health hazard, so get the root problem fixed quickly, clean it, and encapsulate the area to avoid mold formation.

Pellet stoves burn compressed wood byproducts, making them very efficient and clean-burning. However, even efficient combustion still produces fine dust particles, which could have an effect on the health of vulnerable people in your household, such as infants and people with asthma. A wood stove pro can help determine whether the levels in your home are unsafe.

Yes, drywall mud can get moldy—though the presence of moisture is required for this to happen. That’s why the best way to keep your powdered drywall mud fresh for as long as possible is to keep it in dry storage conditions. If you live in a humid area, it might not make sense to stockpile a lot of powdered drywall mud before you’re ready to use it. As for premixed drywall mud, avoid opening the container until you’re ready to use it—and don’t expect it to last longer than six months.

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.