Mold Remediation in San Antonio, TX

The short version: Mold after a water loss in San Antonio is a moisture problem with a legal framework attached. Texas requires a TDLR-licensed contractor for contamination over 25 contiguous square feet, keeps assessment separate from remediation, and issues a Certificate of Mold Damage Remediation that protects the property afterwards. Remediation that does not fix the water source fails within weeks.

San Antonio Is Built for Mold — Unfortunately

Take a warm climate, add Gulf humidity, and put every home on a slab where water has nowhere to drain: that's a recipe for mold. After any water event here — a slab leak, a roof leak, a flood, even chronic A/C condensation — mold can begin colonizing damp drywall and framing within 24–48 hours. It thrives inside wall cavities and under flooring, which means by the time you see spotting or smell that musty odor, the visible patch is usually the tip of the colony.

What Texas Law Says About Mold Work

Texas regulates mold work more strictly than most states, and knowing the rules protects you twice over:

• The 25 square foot rule. Mold contamination covering more than 25 contiguous square feet must be remediated by a contractor licensed by the Texas Department of Licensing and Regulation (TDLR) under the Texas Mold Assessment and Remediation Rules. Verify any license through the TDLR license search.
• Assessment and remediation are separated. For licensed projects, the company that assesses the mold generally can't be the one that removes it — a built-in conflict-of-interest protection for you.
• The certificate that protects your home's value. After a licensed remediation, you receive a Certificate of Mold Damage Remediation (CMDR). Texas law bars insurers from using remediated, certificated mold damage against the property — and resale buyers will want to see it.

What Professional Remediation Involves

• Find the moisture first. Every legitimate job starts by identifying and fixing the water source — otherwise the mold returns in weeks. This is where remediation connects back to slab leaks, roof and A/C leaks, and incomplete drying.
• Containment. The work zone is sealed with plastic sheeting and negative air pressure so disturbed spores can't ride air currents into the rest of the house.
• HEPA air filtration. Air scrubbers run throughout, and HEPA vacuums handle surfaces — ordinary vacuums just redistribute spores.
• Removal. Mold-colonized porous materials (drywall, insulation, carpet) are bagged and removed; structural wood is cleaned, treated, and dried in place.
• Clearance. The area must pass post-remediation verification before rebuild — on licensed projects, by an independent assessor.

What Mold Remediation Costs

Typical ranges, not quotes. Insurance coverage for mold in Texas is limited — policies typically cover mold only when it results from a covered sudden water loss, and often with capped limits. The insurance guide covers the details.