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Find Mold & toxic material testers in Simi Valley

Avatar for Bye Bye Mold, Inc.
Bye Bye Mold, Inc.
4.8(
57
)

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2002

Emergency services offered

Credit card accepted

"Great company. Quick to respond. ADJUSTED THEIR SCHEDULING TO FIT MY REQUIREMENTS. Testing with current equipment. Quick turn-around for results. Written report. Very competitive pricing. Recommend and would use again."
Air Sample
Moisture Meter
Mold on shoes
Mold Growth under sink
Response time3 hrs
Recommended by96%of homeowners
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Avatar for Santa Clarita Mold Inspection
Santa Clarita Mold Inspection
5.0(
10
)

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2024

Free estimates

Small jobs welcome

"Santa Clarita Mold Inspection (SCMI) came to the pad on time, was clean and polite, and got the job done right and fast. What a refreshing experience. Would recommend these guys 11 out of 10 times. "
Crawl space
Crawl space
Exterior window
Exterior window
Air vent

+9

Response time3 hrs
Response rate94%
1 neighbors recently requested a quote
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Avatar for 911 Certified Mold Testing LLC
911 Certified Mold Testing LLC
5.0(
8
)

Serving Simi Valley, CA and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"Kayla is so wonderful to work with. She is so professional and knows her stuff. Iâ ve used her in 2 projects already and my clients and I are extremely satisfied with her service. Her turn around mold air testing is fast. I will definitely recommend her and will continue to use her service."
Response time4 hrs
Response rate93%
Recommended by87%of homeowners
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Avatar for Continental Remediation Services
Continental Remediation Services
4.8(
23
)

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Told me everything I needed to know. Did what he said he would do and all was done on schedule. We passed on the first test for mold. I was very happy with his professionism and quality of work. I highly recommend this company!"
Commercial Project
After Final Cleanup
After Final Cleanup
During Cleanup Process
Initial Inspection

+16

Response time10 hrs
Response rate92%
7 neighbors recently requested a quote
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Avatar for Hippo Home Inspections
Hippo Home Inspections
4.9(
144
)

Serving Simi Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Emergency services offered

Small jobs welcome

"Excellent verbal and written communication. Timely LAB Report for three AIRBORNE tests for mold. A professional approach in offering additional services to help the customer with mold remediation."
Response time4 hrs
Response rate89%
181 neighbors recently requested a quote
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Avatar for Pro Elite Restoration
Pro Elite Restoration
5.0(
10
)

Serving Simi Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"They really helped me with all the mold issues at my place. Everything was handled with great care, and they kept me updated throughout the entire process. I truly appreciated their professionalism and communication."
Response time3 hrs
Response rate98%
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Avatar for First Source Restoration, Inc.
First Source Restoration, Inc.
4.2(
34
)

Serving Simi Valley, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"Karla did a good job detecting the mold behind my walls. I will be breaking my lease. I want to thank you for all your help."
Infrared light
got mold?
Equipment
mold removal
Plastic Containment

+9

Response time2 days
77 neighbors recently requested a quote
Recommended by88%of homeowners
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FAQs for mold & toxic material test projects in Simi Valley, CA

Some companies offer a no‑cost phone or video consultation that screens for red flags. If the discussion points to a real issue, the pro will recommend a paid on‑site inspection. The complimentary call clarifies whether you need full testing, but it isn’t a substitute for samples, lab work, or a written report. Always confirm what the free service covers before you schedule.

A standard inspection, which includes basic air and surface samples, takes an average of two hours. If the pro needs to probe hidden spaces, such as wall cavities or ductwork, plan on up to six hours. Extra time allows the inspector to reach tight areas, collect additional samples, and document findings. Lab analysis is a separate process and often adds several business days to the overall timeframe before you receive the full report.

Mold thrives where moisture lingers and air flow is poor. Common hotspots include bathroom walls, kitchen backsplashes, window sills, HVAC vents, fireplaces, crawl spaces, and enclosed attics. Check these areas regularly—especially after leaks or high‑humidity weather—to catch growth early and avoid costly repairs.

Unchecked mold can knock 20% to 37% off a home’s market value because buyers worry about hidden damage and health risks. Even after remediation, visible staining or a history of major moisture issues can still lower offers and prolong the time on the market. Addressing mold quickly protects both your property’s structural integrity and its resale appeal.

The Simi Valley, CA homeowners’ guide to mold & toxic material tests

From average costs to expert advice, get all the answers you need to get your job done.

See all articles