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Find Mold & toxic material testers in Houston

Avatar for IAQ Analytical
IAQ Analytical
4.7(
49
)

Serving Houston, TX and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I had mold under my refrigerators and I had called several companies, and they all quoted me these ridiculously high prices . I got the call from Joel Fallas and he came over here within an hour. He was so quick. He looked at the problem, I said I was going to pay you for this, and told me what to do to get rid of the mold. I tried to pay him and he said no. He said I will not take your money. I did what he told me to do and I got rid of the mold, and he called me later that day to see how it works and make sure if I was happy,, and I said yes. I just what to tell how honest this man."
Certification Seal from ACAC
Response time1 day
44 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Aggie Inspector Group, LLC
Aggie Inspector Group, LLC
4.8(
148
)

Serving Houston, TX and surrounding areas

Approved

In business since 1993

Free estimates

Emergency services offered

"Professional and thorough home inspection. Joe made recommendations on mold remediation and identified/eliminated areas of concern. He exhibited extensive knowledgeable and answered all questions asked."
Floor of return air plenum
Mold on surface of duct work
Stachybotrys on wall surface
Response time5 hrs
Recommended by96%of homeowners
Avatar for LoneStar Mold Testing
LoneStar Mold Testing
4.9(
113
)

Serving Houston, TX and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"Lance was very professional and I was very impressed with his knowledge of all types of mold and other toxic airborne problems."
Response time4 hrs
18 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Mold Test Company TX
Mold Test Company TX
3.9(
138
)

Serving Houston, TX and surrounding areas

Approved

In business since 2008

Emergency services offered

Small jobs welcome

"Jeremiah came out and tested the air and moisture and other items to determine if I had mold in my basement. After getting the test results there was evidence of mold and he recommended a company that provides a do it yourself kit for mold remediation. (Not cheap). After getting the items and realizing that there was more work, it would have been better for me to let my insurance company handle this as I do have coverage for mold/fungi. Though having a professional do the work is expensive, from what Jeremiah mentioned, it does not guarantee that the work will be complete or the source of the problem taken care of. He mentioned most companies will take care of the mold but not necessarily the cause of the mold. For this I would have to contact another company."
Mold Testing
Mold Testing
Mold Testing
Mold Testing
Mold Testing

+71

Response time11 hrs
Response rate100%
323 neighbors recently requested a quote
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 AJ Environmental Consulting, Inc.
AJ Environmental Consulting, Inc.
4.8(
53
)

Serving Houston, TX and surrounding areas

In business since 2017

Emergency services offered

Credit card accepted

"My grandmother had some suspicious areas pop up in her home we wanted to have tested for mold. Received a call from the company within seconds after filling out the form (despite being after business hours) the lady we spoke to was very informative and was able to have someone at my Granny’s house at 9am the next morning. Also received a 24hr report turn around. Positive experience with this company!"
Sharing our knowledge
Rebecca Thomas, MAC
Karlin Higgins, MAT
Thermal Image
Thermal Image

+16

Response time1 day
Response rate87%
Recommended by100%of homeowners
Avatar for Elite Mold Testing & Assessment
Elite Mold Testing & Assessment
5.0(
17
)

Serving Houston, TX and surrounding areas

Free estimates

Emergency services offered

Small jobs welcome

"Elite Mold Testing and Rodney in particular were amazing. Had a roof leak that we wanted to be tested for mold but Rodney checked the entire house and found 2 other places with mold. Answered all our questions at the house and answered follow up questions immediately by text and phone. Really appreciate a contractor that goes the extra mile which seems pretty rare nowadays."
Damaged insulation
Didn't know we had mold
Didn't know we had mold
Mold hidden within the pantry
Didn't know we had mold

+40

Response time2 days
Recommended by100%of homeowners
Avatar for DCG Environmental, LLC
DCG Environmental, LLC
5.0(
48
)

Serving Houston, TX and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"I appreciate the honesty of DCG Environmental. We were ready to pay for whatever was needed to remediate suspected mold. Inspection by the State of TX Licensed Mold Consultant from DCG found that no mold remediation was necessary. This is a company that puts people and customer service first."
DCG Environmental LLC Mold Colony
DCG Environmental LLC Mold Colony 2
DCG Environmental LLC Mold Colors
DCG Environmental LLC Mold Colors 2
DCG Environmental LLC  Old homes

+2

Response time8 hrs
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.