INDEPENDENT CLEARANCE TESTING · TDLR ACO1245

Mold Clearance Testing in Houston:
A Pass You Can ProveIndependent results in 24 business hours

Selling a home? Closing an insurance claim? Moving back in after remediation? Texas law requires an independent, TDLR-licensed assessor to verify the work, separate from whoever performed it. Mold Testing Houston tests, analyzes, and delivers your written result in 24 business hours.

5.0 / 155+ Google reviews
TDLR ACO1245
Reports in 24 hours
Accepted by insurers, lenders & buyers
TDLR-licensed MTH assessor taking an air sample during a mold clearance test in Houston

TDLR-licensed MTH assessor collects an air sample during a post-remediation clearance test in Houston.

POST-REMEDIATION VERIFICATION

What Does Mold Clearance Testing Actually Prove?

Mold clearance testing, also called post-remediation verification, is the answer: an independent inspection and lab analysis that confirms the remediation actually worked. Rather than trusting that an area “looks clean,” a clearance test documents what is actually in the air and on the surfaces, then compares your indoor results against the outdoor baseline and the clearance criteria in your mold remediation protocol.

Clearance testing is a measurement, not a judgment call.

A passing result means the space has returned to what the IICRC S520 standard calls Condition 1, or Normal Fungal Ecology: indoor mold levels back in line with the clean air outside. That is the line between assuming the problem is solved and proving it.

What clearance testing confirms:

  • No visible mold or moisture damage remains in the treated area
  • The containment and work area are clean, with no leftover debris or settled spores
  • Moisture readings are back within a normal range, so mold cannot simply regrow
  • Airborne mold spores indoors match or fall below the outdoor baseline
The Simple Process

From Sample to Certainty In 24 Hours

One visit, one day, and a signed clearance certificate in hand, here’s exactly what happens.

01
TDLR-licensed assessor inspecting a remediated room before mold clearance testing in Houston

Pre-Test Walkthrough

We review the original remediation protocol, confirm the work area is dry, ventilated, and ready for testing, and verify no new contamination is visible.

02
MTH technician collecting an air sample during post-remediation clearance testing

Air & Surface Sampling

We collect calibrated air samples inside the remediated area and one outside as a baseline. Surface swabs are taken anywhere the protocol calls for verification.

03
Accredited lab analyzing mold spore samples for a Houston clearance test

Accredited Lab Analysis

Samples go to EMSL Analytical, an AIHA-LAP EMLAP-accredited microbial lab. Spore types and concentrations are identified and compared against the outdoor baseline.

04
Homeowner reviewing a written mold clearance report formatted for insurers and lenders

Report in 24 Hours

You receive a written clearance report (pass or fail) within 24 hours of lab results, formatted for your insurance company, lender, or buyer.

NO CONFLICT OF INTEREST

Why You Need an Independent Tester (Not Your Remediator)

Most people don’t realize the company that removes their mold legally can’t be the one that clears it. That isn’t red tape, it’s a consumer protection, written to keep you from having to accept a “pass” from the same company you just paid to make the problem go away. It’s the same reason you wouldn’t let the dealer selling you a used car be the one to inspect it: when someone has a stake in the result, only an outside check carries weight. That separation is the whole reason independent testing exists, and the whole reason your result can be trusted.

Texas Law Requires Separation

Under the Texas Mold Assessment and Remediation Rules, the company that removes the mold cannot also perform the clearance test on the same project. The roles are split on purpose, to remove the conflict of interest.

Your Insurance Demands It

Most home and commercial property policies require a third-party clearance certificate before they pay a mold claim. A test run by the remediator usually doesn't count.

We Have No Financial Stake in the Outcome

Mold Testing Houston (TDLR ACO1245) is barred from performing remediation, and we don't sell cleanup. So when we say the air is clear, it isn't a setup for another invoice.

Documentation That Holds Up

Our reports are built for insurance adjusters, real estate closings, and legal disputes: lab-analyzed results, a licensed assessor's sign-off, and the outdoor baseline comparison that holds up under scrutiny.

BEFORE YOU BOOK

Do You Even Need Clearance Testing?

Mold clearance testing isn’t always necessary, and we’ll be the first to tell you when it isn’t. Whether it’s required comes down to your situation. Here’s the breakdown.

YOU LIKELY NEED IT
  • A licensed company remediated 25+ sq ft. Once mold covers 25 or more contiguous square feet and you hire someone to remediate, Texas regulates the project, and a separate licensed assessor has to verify the work. (16 TAC §78.140)
  • You're filing an insurance claim. Most insurers require a third-party clearance certificate before paying a mold claim, and that certificate depends on a passing post-remediation assessment. (16 TAC §78.150)
  • You're selling or buying the home. Texas requires sellers to give buyers copies of any mold remediation certificates issued in the past five years, so clearance documentation directly affects the sale. (16 TAC §78.150)
  • A lender, landlord, or contract requires it. Not always a state mandate, but enforceable in practice, and a common reason clearance gets ordered.
YOU PROBABLY DON'T
  • You did the work yourself, in your own home. A Texas homeowner can remediate mold in their own residence with no clearance mandate, regardless of square footage. (Occ. Code §1958.102; 16 TAC §78.30)
  • The affected area was small. Under 25 contiguous square feet, mold can be cleaned without a licensed protocol or certificate. "Contiguous" means connected, so three separate 10-square-foot spots don't add up to cross the line.
  • No one's asking for proof. No insurance claim, no sale, no lender or contract requirement means clearance is optional.
Still not sure which column you're in? Tell us your situation and we'll give you a straight answer, even if that answer is "you don't need us." And even when it isn't required, mold clearance testing is the only objective way to confirm the remediation actually worked, with indoor spore counts back in line with the outdoor air. And if mold was never professionally confirmed in the first place, start with mold testing in Houston instead. Source: Texas Department of Licensing and Regulation, Mold Assessors and Remediators Laws and Rules.
AFTER THE TEST

What Happens After Your Clearance Test

Two outcomes, and a clear next step for each. A failed clearance test isn’t a disaster; it just means the work isn’t finished yet, and you’ll leave with a plan for exactly what’s left.

PASS

Clearance Achieved

Indoor spore counts in the remediated area are at or below the outdoor baseline. The remediation worked, and you receive a signed clearance certificate to submit to your insurance company, lender, buyer, or attorney.

What happens next: The space is cleared to reoccupy. Keep the certificate for your records and any future disclosure requirements. In Texas, you may need it when selling within five years.

FAIL

Clearance Not Achieved

Indoor spore counts are still elevated, or new contamination turned up. The remediation didn't fully resolve the issue. But a fail is not just a fail: your report lays out exactly what is still present, where it is, and a step by step plan for what needs to happen to reach clearance.

What happens next: You receive a detailed corrective plan, effectively an updated protocol, that is usually shorter than the original since most of the work is already done. Your remediation contractor uses it to address the specific areas flagged, typically under their warranty, and then we retest against the same independent standard. We tell you what the data shows and hand you the plan to fix it. We do not recommend a remediation company, that stays your choice.

A fail is information, not a setback. The whole point of an independent clearance test is to catch what a final walkthrough misses. Better to find it now, with a clear plan in hand, than after you've moved your family back in.
STRAIGHTFORWARD PRICING

What Clearance Testing Costs

No hidden fees, no vague “it depends.” Here’s exactly what an independent clearance test costs, and what’s included for that price.

Standard Clearance Testing
$750
Starting price, single remediated area

Includes:

  • Pre-test walkthrough and visual inspection
  • Calibrated indoor air samples of the remediated area
  • Outdoor baseline air sample for comparison
  • Independent lab analysis by EMSL, an AIHA-LAP EMLAP-accredited laboratory
  • Written clearance report within 24 hours
  • Signed by a TDLR-licensed assessor (MAC1839), company license ACO1245
  • Documentation formatted for insurance, real estate, or legal use
Multi-area or commercial projects: Pricing scales based on the number of remediated areas. Commercial projects may be flat-rated or quoted on-site depending on scope. Call 832-838-9387 for an estimate.
WHY Mold Testing Houston?

Why Houston Trusts MTH

Anyone can claim to be independent. Mold Testing Houston (MTH) puts the license numbers, the accredited lab, and the years of experience behind it, right here in writing, because a result is only as good as the people and standards behind it.

Licensed, Named, Accountable

Your clearance test is performed and signed by Ran Bozaglo, a TDLR-licensed Mold Assessment Consultant (MAC1839), under company license ACO1245. A real, licensed name on your report, not an anonymous technician.

An Accredited, Independent Lab

Samples are analyzed by EMSL Analytical, an AIHA-LAP EMLAP-accredited laboratory, completely independent of MTH. The accreditation is the mold-industry standard; the independence is what makes your result defensible.

Nine Years, Assessment Only

MTH has tested Houston-area properties since 2017, and has never performed remediation. Nine years of doing one thing, verifying whether mold is actually gone, with no cleanup business pulling the result either way.

Tested Against the Standard

Every clearance test is measured against the IICRC S520 standard the State of Texas points to, comparing indoor spore levels to the outdoor baseline. The same objective benchmark, every job.

STILL HAVE QUESTIONS?

Frequently asked questions

Clear answers to the most common clearance testing questions, from cost and turnaround to what a failed test means.

The on-site visit usually takes one to two hours, depending on the size of the remediated area and how many samples are needed. Your samples then go to the lab, and Mold Testing Houston delivers your written clearance report within 24 hours of testing. That is faster than the industry norm of two to five business days, which is part of why Houston homeowners choose MTH for Houston clearance testing when a closing or insurance claim is on a deadline.

Clearance testing in Houston with MTH starts at $750 for a single remediated area, with pricing that scales based on the number of areas. Some companies quote less, but the cheapest option is usually the remediation company offering to test its own work, which carries a conflict of interest and is often rejected by insurers and buyers. A $750 independent result that actually holds up costs far less than a denied claim or a stalled closing.
 
A failed clearance test means indoor spore levels are still elevated or new contamination was found, so the remediation is not finished. But it is not just a fail: your report lays out exactly what is still present, where it is, and a step by step plan for what needs to happen to reach clearance. That plan is effectively an updated protocol, usually shorter than the original since most of the work is already done. Your remediation contractor uses it to address the flagged areas, and then we retest against the same independent standard. A fail is not a setback; it is the test doing its job, with a clear path forward, before you move back in.
 
If the test fails, your report identifies exactly what is still present and where, along with a step by step corrective plan for reaching clearance. The remediation contractor returns, typically under their warranty, to address the flagged areas, after which we perform a retest. Most failed clearances are resolved within a week of the retest.
No. Under Texas rules, the company that performs the mold remediation cannot also perform the clearance test on the same project, because testing your own work is a clear conflict of interest. That separation is exactly why an independent, TDLR-licensed assessor like MTH (ACO1245) is brought in to verify the result.
 
Clearance testing should be done after the remediation is complete and the area is dry, but before the containment and air scrubbers are removed. Removing containment too early, or running air scrubbers right before sampling, can mask the true spore levels and produce a false pass. A proper clearance test measures the real, settled condition of the space.
 
Often, yes. Insurers typically require an independent clearance certificate before paying a mold claim, and in Texas, sellers must give buyers copies of any mold remediation certificates issued in the five years before a sale. In both cases, an independent clearance report from a licensed assessor is what makes the documentation hold up.
 
A mold inspection finds whether mold is present and where, usually before any work is done. A mold clearance inspection, or post-remediation verification, confirms after remediation that the mold is actually gone and indoor spore levels have returned to the outdoor baseline. MTH offers both, but clearance testing is specifically the final, independent sign-off on completed remediation.
READY TO VERIFY

Get the Independent Clearance Test That Actually Holds Up

Book online in under a minute, or call and talk to a TDLR-licensed assessor today. Same-day appointments are often available, and your written report lands within 24 hours of testing.

5.0 / 155+ Google reviews
TDLR licensed (ACO1245)
Reports in 24 hours