| Equipment Storage Facility |
Fixed |
Use $3,500 per month as baseline overhead from Month 1 through Month 60. |
Mixing storage rent with launch equipment purchases. |
| General Liability Insurance |
Fixed |
Use $1,200 per month as recurring overhead before calculating contribution margin. |
Treating insurance as job-level expense. |
| CRM and Scheduling Software |
Fixed |
Use $450 per month as a stable operating expense for dispatch and scheduling. |
Scaling it with every new customer. |
| Operations Manager |
Semi-fixed |
Use $6,250 per month until management capacity needs another layer. |
Modeling salaried management as fully variable. |
| Lead Service Technician |
Semi-fixed |
Use $8,667 per month in the first year, then step up as crews expand. |
Matching technician pay to revenue dollar-for-dollar. |
| Junior Technician |
Semi-fixed |
Use $7,000 per month in the first year, then increase in staffing steps. |
Forgetting payroll jumps before sales fully catch up. |
| Cleaning Consumables and Chemicals |
Variable |
Use 8.5% of revenue in the first year, falling to 6.5% by the mature year. |
Using a flat monthly amount despite job volume. |
| Marketing Budget and Customer Acquisition |
Semi-variable |
Use $3,750 per month in the first year, with $450 customer acquisition cost as the volume signal. |
Ignoring spend efficiency when customer counts change. |