Mold Remediation Cost Calculator
Estimate remediation cost and see where your job falls on the EPA size guidelines.
Estimates use typical industry ranges and published methods. They are not a quote. An on-site moisture inspection sets the actual scope.
Signs you're past DIY territory
- Growth covering more than about 10 square feet
- Mold returning after you've cleaned it
- A musty smell you can't locate
- Mold appearing after known water damage — inside closets, behind furniture on exterior walls, or around bathroom ceilings
- Mold in HVAC vents, the air handler, or ductwork
- Family members with worsening allergy or respiratory symptoms at home
What professional remediation involves
- Assessment to find the extent of growth and the moisture source behind it.
- Containment with plastic barriers and negative air pressure so spores don't spread during removal.
- HEPA air filtration running throughout the work.
- Removal of contaminated porous materials such as drywall, insulation and carpet.
- Cleaning and treatment of structural surfaces like studs and subfloor.
- Drying and fixing the moisture source, then clearance testing on larger jobs.
Texas mold rules homeowners should know
In Texas, larger jobs (over 25 contiguous square feet) fall under state mold remediation rules with licensed assessors and remediators — a legitimate crew will know the requirements. Texas requires certain mold remediation work to be performed by state-licensed remediators, and homeowners receive a Certificate of Mold Damage Remediation (CMDR) after qualifying jobs — which matters when you later sell the home. Ask about it when discussing larger jobs.
Mold remediation costs
Remediation is typically priced at roughly $10–$25 per square foot of affected area, with minimums for small jobs and added costs for containment, HVAC cleaning and testing. The calculator above also shows where your job falls on the EPA size guidelines: small (under 10 sq ft), medium (10–100 sq ft) and large (over 100 sq ft).
Insurance usually covers mold only when it results from a covered water loss, like a burst pipe, and many Texas policies cap mold coverage at a sublimit. Mold from long-term humidity or leaks is typically excluded.