April 7, 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.
I got the call in late autumn. The owner ran a mold remediation company — primarily residential, with a growing commercial component through two property management relationships. She’d built it 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. She’d been overdrawn twice in the previous quarter, covered both times by drawing down her 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.
The first thing I asked for was her cost per square foot of mold remediation by job type. She didn’t have it. She priced based on what competitors were charging — roughly $15–22 per square foot. Her instinct was that if she was competitive and winning jobs, the economics were fine.
When we built her actual cost per square foot from labor burden, PPE, containment materials, disposal, and overhead allocation, her cost for standard residential remediation was $11.40. At $15/sqft she was running 24% gross margin. At $22/sqft she was running 48%. The problem: she was pricing some jobs at $15 and some at $22, with no consistent logic. Her lowest-margin jobs were often her largest ones — because she was aggressive on price to win high-volume commercial work. Blended, she was running 29% gross margin. She thought she was running 38%.
Mold remediation containment is the most consistently underestimated cost category I find in the field. Her technicians were spending 4–6 labor hours on containment setup and breakdown per job, and the estimate was allocating 2 hours. The containment material cost in the estimate was averaging 40% below actual on complex multi-room remediations. On 40 jobs per month, that gap was accumulating to approximately $18,000–$22,000 per month of unrecovered cost.
Her two commercial property management clients — her most reliable volume sources — were negotiated at flat per-square-foot rates two years earlier, before she fully understood her cost structure. At her current costs, those accounts 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 to maintain relationships that felt important but were quietly subsidized by her higher-margin residential jobs.
With 60–70 day payment cycles on commercial work and 45-day cycles on insurance-driven residential work, she was typically floating $180,000–$220,000 in completed, invoiced, unpaid work at any given time. She had no line of credit — she’d never established one because she’d never needed it until recently. Growth had outpaced her working capital, and she was funding the gap with personal savings.
Pricing: She rebuilt her pricing model from cost up — actual cost per square foot plus 45% target gross margin equals her minimum price. Jobs below that floor required owner approval with explicit rationale.
Containment estimating: She built a containment time allowance into her scope checklist based on room count and square footage — and stopped letting technicians estimate containment time based on optimistic projections.
Commercial repricing: She went to both property management clients with a rate increase proposal documenting her actual cost structure. One client accepted immediately. The other pushed back. She held her floor. That client eventually accepted.
Line of credit: She established a $250,000 revolving line of credit through her bank using her clean AR as collateral. She hasn’t needed to draw on it more than twice in the eighteen months since.
Result: Revenue is similar. Gross margin improved from 29% to 41%. She hasn’t touched her personal savings in over a year.
She wasn’t failing. She was succeeding at the wrong things. Volume felt like success because volume is visible. Margin is invisible until you measure it. The discipline of measuring at the job level, pricing from cost up, and establishing the financial infrastructure to manage cash flow — these are operational fundamentals that growth had simply masked until the diagnostic made them visible.
The most common causes are pricing below actual cost burden (especially on commercial accounts negotiated before the full cost structure was understood), systematic underestimation of containment costs, slow insurance payment cycles, and the absence of a working capital credit facility. Any one of these alone is manageable. All four together produce a company that is busy and broke.
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 — your costs may be materially different from a competitor with different overhead, insurance rates, or labor markets.
Annually at minimum. When labor costs, workers’ comp rates, materials prices, or regulatory compliance requirements change significantly — review immediately. Cost structures drift faster than most owners realize, especially during inflationary periods when multiple cost inputs are rising simultaneously.
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 that requires diagnostic attention. The most common root cause is containment cost underestimation.
Bring 2–3 years of tax returns, current year P&L and balance sheet, and a current AR aging report showing clean receivables. Establish the line when you don’t need it — not during a cash crisis. Banks lend to companies with clean AR and consistent revenue; they don’t rescue companies in distress.
Mike McCabe is The Profit Detective — a Master Cleaner, Master Restorer, and 36-year restoration business consultant. He has worked personally with 150+ restoration companies across North America, diagnosing the profit leaks that most owners never see on a P&L. He serves as Fractional Operations Manager at Floodlight Consulting Group and speaks at major industry events including the DKI Canada AGM. Book a free diagnostic conversation at calendly.com/profitdetective.
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