How Much Does Mold Removal Cost in Houston?
Updated October 7, 2026 · 2 min read
Realistic price ranges, what drives the cost, and how to compare written bids for mold remediation in Greater Houston.
There is no single price for mold removal, because "mold removal" can mean wiping a bathroom ceiling or gutting and rebuilding half a house. These ranges are illustrative, not quotes. Reported national averages vary widely and Houston prices depend on access, materials and how quickly the work has to happen. The only number that matters is the one in a written, itemized scope for your property.
Typical ranges
| Job | What's involved | Rough range |
|---|---|---|
| Small, contained area (under ~10 sq ft) | Clean non-porous surfaces or remove a small piece of drywall | A few hundred dollars up to ~$1,500 |
| One room or one attic section (10 to 100 sq ft) | Containment, remove drywall/insulation, HEPA clean, dry | ~$1,500 to $6,000 |
| Multiple rooms, HVAC involvement, or 100+ sq ft | Full containment and negative air, extensive demolition, duct work | ~$5,000 to $15,000+ |
| Post-flood, whole-house | Demolition, drying, antimicrobial, clearance; rebuild is separate | Often $10,000 and up, plus reconstruction |
Many contractors price by square foot for remediation (commonly cited figures run from roughly $10 to $30 per square foot depending on conditions), but square footage is only one factor.
What drives the price
- Extent of growth and moisture. Mold visible on the surface is often a fraction of what's inside the wall.
- Material type. Porous materials (drywall, insulation, carpet, ceiling tile) get removed; solid wood framing can usually be cleaned.
- Containment. Plastic sheeting, negative-air machines and decontamination chambers add labor and equipment cost but prevent spreading spores through the house.
- Access. Tight attics and second-story work cost more.
- Testing. Pre-remediation assessment, the protocol, and post-remediation clearance are separate from the remediation itself and billed by the assessor.
- Fixing the cause. Plumbing, roof, window or A/C repairs are usually separate trades.
- Reconstruction. Remediation leaves the structure clean and dry, not finished. Drywall, paint and flooring cost extra.
What a good bid includes
- Square footage and location of each affected area
- Which materials will be removed vs. cleaned
- The containment and air-filtration plan
- How the moisture source will be corrected, or who is responsible for it
- Disposal, timeline, and what "done" means (clearance testing)
- The contractor's TDLR license number
Red flags
- A price quoted over the phone with no inspection
- "Fogging" or "encapsulating" as the whole plan with no removal or source fix
- No written scope, or a scope that says only "mold treatment"
- A company offering to both write the protocol and perform the remediation on a 25+ sq ft Texas project (this is prohibited, see Texas mold law)
Will insurance pay?
Sometimes. Coverage often depends on the cause: mold resulting from a sudden covered event such as a burst pipe may be covered up to a limit, while mold from long-term seepage, neglect or flooding is commonly excluded (flooding is generally a flood-policy matter). Report the claim early, photograph everything, and keep receipts. Check your policy before starting work.