Mold Remediation Area Calculator
Mold remediation scope depends on the total affected area, the type of materials involved, and whether the contamination is visible or concealed. This calculator follows EPA and IICRC S520 guidelines for remediation levels and containment requirements.
Calculate Remediation Scope
This is not a substitute for professional mold assessment. A certified mold inspector should verify contamination scope before remediation begins. Costs are regional averages and vary significantly by market.
EPA Remediation Levels
The EPA defines three remediation levels based on total contaminated area. Each level has different containment, PPE, and professional requirements.
| Level | Area | Containment | Who Can Perform |
|---|---|---|---|
| Level 1 | < 10 sq ft | Minimal — work area isolation | Building maintenance staff with training |
| Level 2 | 10 – 100 sq ft | Limited — polyethylene sheeting, HEPA vacuum | Trained remediation personnel |
| Level 3 | > 100 sq ft | Full — negative air pressure, decontamination chamber | Licensed mold remediation contractor |
Frequently Asked Questions
How much does mold remediation cost?
Costs vary widely by region and scope. Small projects (under 10 sq ft) may cost $500–$1,500. Mid-size remediation (10–100 sq ft) typically runs $2,000–$6,000. Large-scale projects (over 100 sq ft or involving HVAC) can range from $5,000 to $30,000 or more. These figures include containment, removal, disposal, and clearance testing.
Does mold remediation include fixing the water source?
No. Mold remediation addresses the contamination. The underlying moisture source (leaking roof, plumbing, poor ventilation) must be fixed separately, either before or concurrent with remediation. Without fixing the source, mold will return.
Is post-remediation testing required?
Most states do not legally require it, but it is standard practice for Level 2 and Level 3 remediation. A third-party inspector (not the remediation company) should perform clearance testing to verify mold counts have returned to normal levels.