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Find Mold & toxic material testers in Houston

Avatar for LoneStar Mold Testing
LoneStar Mold Testing
4.9(
110
)

Serving Houston, TX and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"Lance was very professional and informative! He was very quick to fit us in to his schedule to test for toxic mold! He got the test results back quickly and gave us his recommendations within 24 hours! I highly recommend LoneStar Mold Testing."
Response time4 hrs
7 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Aggie Inspector Group, LLC
Aggie Inspector Group, LLC
4.8(
136
)

Serving Houston, TX and surrounding areas

Approved

In business since 1993

Free estimates

Emergency services offered

"This business owner is very intelligent and knows his business. His wife is a fantastic person. He would educate me along the way about the airflow process and what could create mold. We're not so sure it's mold rather the water that's bad but I still look forward to getting his test results to see if he was able to capture exactly what elements are in the air affecting my health."
Floor of return air plenum
Mold on surface of duct work
Stachybotrys on wall surface
Response time5 hrs
Recommended by96%of homeowners
Avatar for IAQ Analytical
IAQ Analytical
4.8(
40
)

Serving Houston, TX and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Joel's instruments showed I have very poor air quality. Now, I have to have my HVAC system checked and if that is not the root of the problem, then I have to test for mold although mold is not readily evidenced in the home. Time and next steps will tell."
Certification Seal from ACAC
Response time1 day
81 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Mold Test Company TX
Mold Test Company TX
4.3(
121
)

Serving Houston, TX and surrounding areas

Approved

In business since 2008

Emergency services offered

Small jobs welcome

"Mold Test Company makes a point of not themselves providing mold remediation services, so theoretically they don't have an incentive to find mold. In my case, they did, and immediately recommended their partner Biocide Labs for remediation products. They were even able to transfer me directly to Biocide, whose representative then recommended a high-priced do-it-yourself kit. While the products recommended seem effective, I chose to have my ducts professionally cleaned. Mold Test Company provided lab results of their testing but could not tell me where their sample were taken, and they did not provide photos of actual mold in my house."
Mold Testing
Mold Testing
Mold Testing
Mold Testing
Mold Testing

+71

Response time11 hrs
Response rate100%
306 neighbors recently requested a quote
Avatar for Disaster Masters SW Company
Disaster Masters SW Company
5.0(
9
)

Serving Houston, TX and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

Call 1-833-225-5379 for our 24/7 Emergency Response Team to help for your Water Removal and Storm Damage Restoration. When water wreaks havoc due to storms or other incidents, we’re here to help with water extraction, drying, and structural repairs!\n\nAt Disaster Masters SW Company, we specialize in comprehensive disaster restoration services. Our team is dedicated to safeguarding homes and businesses from the damaging effects of water, fires, mold and storms. Here’s what sets us apart:\n\nComprehensive Services: Beyond mold and water remediation, we handle storm damage repairs, flood cleanup, and fire restoration. \nChoose Disaster Masters SW Company for reliable, efficient, and compassionate restoration services. We’re committed to restoring peace of mind and protecting your property. And we will assist you with your Insurance Claims!

Fire or Smoke Damage Restoration Project
Fire or Smoke Damage Restoration Project
Additional Photos
Additional Photos
Additional Photos

+3

10 neighbors recently requested a quote
Recommended by77%of homeowners
Avatar for Rainbow Restoration of Magnolia TX
Rainbow Restoration of Magnolia TX
5.0(
2
)

Serving Houston, TX and surrounding areas

Approved

In business since 2024

Emergency services offered

Warranties offered

For nearly 40 years Rainbow Restoration, a Neighborly company, has made disasters disappear! We have provided professional restoration services for jobs big and small. We understand how critical it is to get people back in their homes and companies back in operation quickly.\n\nThat's why Rainbow Restoration uses only the best equipment, innovative technologies and a built-in accountability process to assure every job is done right. Setting the highest standards in water, fire, smoke and mold damage restoration, where customer anxieties can run high, requires a continuous focus and dedication to self-analysis and improvement.\n\nOnce Rainbow Restoration is on the job, customers can expect quality results and a superior customer experience. Rainbow Restoration sets the benchmark in home restoration and commercial restoration.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

4 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for Moldlab
Moldlab
4.7(
352
)

Serving Houston, TX and surrounding areas

In business since 2000

Free estimates

Warranties offered

"The company sent a packet with instructions to provide samples from two sites. We returned these in the Priority envelope provided. Within a few days we received an evaluation of the mold. It does not appear to be a serious problem. I would have graded this work higher if the company had provided general guidelines for remediating the problem. We were relieved to find the problem not serious, but would have appreciated more clarity, such as a simple page outlining safe and unsafe do-it-yourself procedures materials materials. (Suggestions I found online, such as whether to use vinegar, bleach, etc., were sometimes confusing, even contradictory.)"
Recommended by89%of homeowners
Avatar for Mold Busters LLC
Mold Busters LLC
5.0(
9
)

Serving Houston, TX and surrounding areas

Emergency services offered

"The inspection went very well and the inspector was very knowledgeable and professional. The inspection uncovered an ongoing problem we were having in a section of our home. The inspector explained the process on how the inspection would be carried out, types and cases of mold, and remediation steps. He was timely, dressed in protective gear and was very careful in our home. The test results we’re back as scheduled and he went through the report with us to ensure we understood the results. Thanks for a professional job well done and for locating and solving our issue."
Recommended by100%of homeowners
Avatar for ADU Water - Fire - Mold - Storm
ADU Water - Fire - Mold - Storm
5.0(
28
)

Serving Houston, TX and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"Great. I used All Dry during Harvey for my whole house and they did an outstanding job. So I knew I needed them this time too. They arrived as scheduled, did a thorough testing of the whole area, found moisture in some walls in addition to the ceiling and removed the additional sheetrock. They left fans and humidifiers in my garage and returned several days later to do thorough check and do a mold remediation treatment. They cleaned up beautifully and removed all the trash. Special thanks to Robert Rodriguez, Donovan Bradford and Emilio Prestonsoto who did such a terrific job. This is a very important step when water damages your home, especially in Houston, where mold can appear if damage is not treated immediately and properly. There are many companies out there who are "bleach guys" and that won't do the job. All Dry knows their business and no worries about mold after using them"
Recommended by100%of homeowners
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FAQs for mold & toxic material test projects in Houston, TX

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 Houston, TX homeowners’ guide to mold & toxic material tests

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