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Top-Rated Mold testing and remediation specialists in Sonora - 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 Sonora, CA and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"Shane was my first contact (via phone) and was very knowledgeable and went above & beyond to answer all my questions. I tend to have pretty good discernment, and I immediately sensed I was dealing with an honest, straightforward company. Shane offered me an appointment 2 days later that s fast! Awesome when you re concerned about mold! Ray came to our house (a several hour drive to the Redding area!), and was prompt & called ahead to be courteous. Total genuine and nice guy (especially bc he s a dog lover ;) He wasn t rushed at all, answered all our questions (we had a lot), and actually said he likes & welcomes questions! After we received our report & invoice, I THOUGHT I was messaging my husband, lol, but I texted Shane: Thumbs up! They did thorough testing, & the price was still what was initially quoted! I highly recommend these guys!!"
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
Castle Pest Management, Inc
3.9(
48
)
Dry-rot, Water or Pest Damage - Major Repair

Serving Sonora, CA and surrounding areas

Approved

In business since 2012

Free estimates

Credit card accepted

With over 12 years of experience, we at Castle Pest Management care about you! There's nothing more important than keeping your family, friends, neighbors, and place of business safe and free from unwanted pests and other harmful toxins. Give us a call today to set up an appointment. Your emergency is our urgency!

Recommended by91%of homeowners
The Mold Inspector
4.9(
11
)
Indoor Air Quality TestingMold & Toxic Material TestMold & Toxic Material Test - For Business

Serving Sonora, CA and surrounding areas

In business since 2001

Free estimates

Emergency services offered

We take great pride in our experience, expertise, quality and customer service, that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship, and complete customer satisfaction, from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate, with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large, or small the job. Call us today!

Recommended by100%of homeowners
Avatar for SILVA'S PAINTING & CONSTRUCTION
SILVA'S PAINTING & CONSTRUCTION
5.0(
11
)
Dry-rot, Water or Pest Damage - Major Repair

Serving Sonora, CA and surrounding areas

In business since 2022

Free estimates

Small jobs welcome

"House painting (inside and outside), dry rot repair and new flooring completed on time and in budget. The team is very professional and a pleasure to work with. I've hired Silva Painting and Construction for several jobs at my house over the past 25+ years and have always been pleased with the price, the process and the results. I definitely recommend Silva!"
exterior siding job
outdoor deck
outdoor deck
exterior siding project
Response time7 hrs
Response rate100%
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Mold Testing and Remediation FAQs, answered by experts

Vermiculite insulation that comes from a particular mine before 1990 is likely to contain asbestos. This is particularly true in the U.S. However, not all types of vermiculite insulation contain asbestos. Since you can't detect the presence of asbestos without special equipment, it's best to assume that the insulation contains the dangerous mineral and to either leave it alone or hire a professional to handle it.

Mold is very likely if you do not take action to fully dry your home within around 24 to 48 hours after water damage occurs. This can happen even faster in warm, dark locations with extensive water damage. In areas of the home that receive ample sunlight and only have slight moisture issues, it can take weeks for mold to appear.

A professional indoor air quality inspection takes anywhere from one to three hours, depending on the size of your home and the number of necessary samples. After the test, the specialist will discuss the findings, but you won’t get a full written report for 2 to 10 days, though you can ask your pro to expedite the process, if needed. 

Yes, mold in the basement of your home will affect the conditions upstairs. Mold spores can travel through the air and into the supply vents of your home’s ventilation system. It is extremely important to remove any mold in your basement as soon as possible so it doesn’t affect the health of those living in the house.

Mold in a basement is harmful as it can trigger allergy symptoms, especially for those with asthma and other breathing conditions. Symptoms of mold exposure include itching, sneezing, running nose, and congestion.

The Sonora, CA homeowners’ guide to mold testing and remediation services

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