Tomball mold remediation usually follows creek flooding near Spring, Willow, Mill or Walnut creeks, local stormwater ponding, or AC and roof leaks. Texas requires one company to assess the mold and write the plan and another to remove it. Call the number on this page to be connected with a local mold remediation company in Tomball.
Tomball's water picture
Tomball is a small city in northwest Harris County, about 24 miles from downtown Houston, that grew up around the railroad arriving in 1906 and sits on SH 249 and FM 2920. It lies in the Spring Creek and Willow Creek watersheds. The Harris County Flood Control District counts Tomball among the communities affected by the April 2016 Tax Day flood. Harvey did relatively little damage here compared with Houston, but water still rose into homes near Spring, Willow, Mill and Walnut creeks. The city stresses that homes outside the mapped 100-year floodplain can still flood, often from local stormwater ponding.
What to do now
- Cut off the water: fix the leak, clear the AC drain line, or pump out standing water.
- Get wet materials drying within 24 to 48 hours.
- Switch off the HVAC if it may be contaminated.
- Call a mold assessment consultant who holds a TDLR license for the protocol.
- Hire a separate remediation company to carry it out.
- Apply for repair permits through the City of Tomball Building Division's online SmartGov portal. The city has adopted the 2021 International Property Maintenance Code, and its Code Compliance officers sit within the same division.
Signs and likely causes
| What you see | Likely cause |
|---|---|
| Damp, stained drywall at floor level | Stormwater ponding against the slab or creek flooding |
| Dark spots near the attic access | Humid attic air meeting cold ducts |
| Bubbled paint under a window | Failed sealant or flashing |
| Odor after the AC starts | Growth on the coil, pan or in the ducts |
Cost factors
Angi's Houston cost data reports a typical range of $863 to $3,329 for mold removal. HomeGuide's 2026 national figures put a medium job of 100 to 300 square feet at $1,500 to $6,000 and labor at $75 to $120 an hour. Tomball jobs vary with the area involved, whether ducts are included, containment, and the separate assessor fees for the protocol and post-remediation clearance. Rebuild costs after removal are separate. If the home flooded, ask whether the work counts as floodplain development; the city's floodplain administrator can tell you, and a surveyor can establish your elevation relative to the base flood elevation.
Mold Removal & Remediation questions in Tomball
How do I find out whether my home is in a flood zone?
Can the same company inspect my home and remove the mold?
Should the air conditioning stay on during remediation?
What paperwork should I get when the job is finished?
More mold services in Tomball
Mold Removal & Remediation nearby
Helpful guides
Sources
- EPA: Mold Cleanup in Your Home
- TDLR: Mold Assessors and Remediators FAQs
- 16 Tex. Admin. Code 78.150: Photographs; Certificate of Mold Damage Remediation; Duty of Property Owner
- Angi: How much do mold removal services typically cost? (Houston, TX)
- HomeGuide: How Much Does Mold Removal and Remediation Cost? (2026)
- Harris County Flood Control District: Spring Floods 2016
- Community Impact: Tomball, Magnolia weather the storm, begin recovery
- City of Tomball: Floodplain Management
- City of Tomball: Building Permits
- City of Tomball: Building Division
- Wikipedia: Tomball, Texas
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