| Small Warehouse Rent |
Fixed |
Include $2,200 per month in fixed overhead for the relevant planning range. |
Scaling rent with each installation job. |
| Scheduling and CRM Software |
Fixed |
Include $150 per month as a baseline admin expense. |
Treating the subscription as booking-driven. |
| Utilities and Internet |
Semi-fixed |
Use the $400 monthly base, then step it up only when operating scale changes. |
Making the full amount variable with revenue. |
| Installation Consumables and Hardware |
Variable |
Deduct as a revenue-linked charge, starting at 8.5% in the first year and falling to 6.5% by the mature year. |
Parking materials in fixed overhead. |
| Subcontractor Labor Overflow |
Variable |
Model as job-volume leakage, rising from 5.0% of revenue in the first year to 7.0% in the mature year. |
Assuming every install hour is covered by salaried staff. |
| Fuel and Vehicle Maintenance |
Semi-variable |
Tie the usage portion to routes and job volume, starting at 6.0% of revenue in the first year. |
Treating route-heavy months like quiet months. |
| Payment Processing Fees |
Variable |
Deduct 3.0% of revenue when calculating contribution margin. |
Budgeting card fees as a flat bank charge. |
| Installer, Office, and Sales Wages |
Semi-fixed |
Treat wages as hiring steps as headcount moves from three early roles to larger crews and sales coverage. |
Spreading payroll smoothly across every new sale. |