May 1, 2026
Can a mold remediation company be busy and unprofitable? Yes — high job volume without job-level cost tracking, pricing below actual cost burden, and slow TPA collections can produce a mold company that grows revenue while simultaneously losing working capital. This is one of the most common patterns in service businesses that prioritize volume over margin discipline.
The Profit Detective Files is a series of case studies from 36 years of restoration business diagnostics. Details are changed to protect client confidentiality. The numbers and the outcomes are real.
She’d built the company to 40 jobs per month over four years. Revenue was $2.4M and climbing. Her accountant said the business was profitable. Her bank account told a different story — overdrawn twice in the previous quarter, both times covered by personal savings. “I’m not losing money,” she told me. “The P&L says I’m making money. So where is it going?” I told her I’d find it.
Her actual cost for standard residential remediation was $11.40 per square foot. She was pricing some jobs at $15 and some at $22 with no consistent logic — more aggressive on price for high-volume commercial work. Blended, she was running 29% gross margin. She thought she was running 38%.
Technicians were spending 4-6 labor hours on containment setup and breakdown per job; estimates allocated 2 hours. Containment material costs in estimates were averaging 40% below actual on complex remediations. On 40 jobs per month, that gap was accumulating to $18,000-$22,000 per month of unrecovered cost.
Her two most reliable commercial accounts — negotiated at flat per-square-foot rates two years earlier — were contributing approximately 14% gross margin. The residential jobs she was occasionally turning away to keep commercial capacity were running 35-42% margin. She was prioritizing her worst-margin work.
With 60-70 day payment cycles on commercial work, she was floating $180,000-$220,000 in unpaid work at any given time with no credit facility. Growth had outpaced her working capital and she was funding the gap with personal savings.
Rebuilt pricing from cost up. Fixed containment estimating with time allowances by room count and square footage. Repriced both commercial accounts — one accepted immediately, one pushed back and eventually accepted when she held her floor. Established a $250,000 revolving line of credit. Result: revenue similar, gross margin improved from 29% to 41%, personal savings untouched for over a year.
Well-executed mold remediation should yield 45-60% gross margin when properly scoped, correctly priced, and job-costed accurately. Below 35% indicates either a pricing problem or a cost control problem requiring diagnostic attention.
Build your actual cost per square foot from labor burden, PPE, containment materials, disposal, and overhead allocation. Set your price floor at cost plus your target gross margin percentage. Never price based on competitor rates without first verifying your own cost structure.
Mike McCabe is The Profit Detective — a Master Cleaner, Master Restorer, and 36-year restoration business veteran.
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