Know what your mold remediation should cost
A 150 sq ft mold remediation costs $1,950 to $3,150 in 2026, about $17 per sq ft installed. Across every option it runs from $1,000 (surface mould) to $8,000 (structural, after flooding).
Four questions gets you an itemised range, adjusted for construction wages where you live. The whole number, up front, before we ask for anything.
What mold remediation work costs in 2026
| Project | Typical range |
|---|---|
| Surface mould Visible on a wall or ceiling, no structural involvement | $1,200 – $1,900 |
| Standard remediation Containment, HEPA filtration, removal and treatment | $1,950 – $3,150 |
| Inside walls or under floors Drywall or subfloor has to come out to reach it | $2,800 – $4,600 |
| HVAC and ductwork Spores travel through the system to the whole house | $2,450 – $3,950 |
| Structural, after flooding Framing affected; usually follows a water event | $3,700 – $6,000 |
Where the money goes
Labour and containment
$860 · 34% of the job
Removal and disposal
$510 · 20% of the job
HEPA filtration and drying
$410 · 16% of the job
Antimicrobial treatment
$310 · 12% of the job
Inspection and clearance testing
$280 · 11% of the job
PPE and consumables
$180 · 7% of the job
Mold Remediation cost by state
Labour is the part of this job that moves with geography. These are the same 150 sq ft project, priced against construction wages in each state.
- California $2,000 – $3,300 +4.6% vs national
- Texas $2,000 – $3,200 +1.3% vs national
- Florida $1,800 – $3,000 -6.0% vs national
- New York $2,000 – $3,300 +4.4% vs national
- Illinois $2,050 – $3,350 +5.4% vs national
- Indiana $1,900 – $3,100 -1.8% vs national
- Kansas $1,850 – $3,050 -4.4% vs national
- Kentucky $1,850 – $3,050 -4.3% vs national
- Louisiana $1,950 – $3,150 -0.1% vs national
- Massachusetts $2,150 – $3,450 +10.5% vs national
- Maryland $1,950 – $3,150 +0.6% vs national
- Maine $1,800 – $3,000 -5.1% vs national
Questions homeowners ask
What does mold remediation typically cost?
For a standard job covering about 150 square feet, roughly $1,950 to $3,150. Surface mould on a small area often prices at the job minimum near $800. Mould inside walls across several rooms runs closer to $9,850.
Will insurance pay for mold remediation?
Sometimes, and it turns on the cause. Mould following a sudden covered event, a burst pipe, is often covered. Mould from a slow leak, humidity or deferred maintenance usually is not. Document the source before anything is removed.
Is mold remediation worth it?
Untreated mould spreads and the cost scales with it. A 150 square foot surface job at around $2,550 becomes a $32,000 structural one if it reaches framing after flooding. It also has to be disclosed at sale in most states.
Can a house full of mold be saved?
Almost always, though whole-house remediation after flooding runs into the tens of thousands. The decisive question is whether the framing is affected and whether the moisture source has been fixed, remediation without fixing the source just resets the clock.
Reviewed and maintained by Anchorcost. Last checked September 3, 2026. Figures are verified against this page's own calculator on every build. How these figures are worked out.