Garage Door Service input evidence register
44 numeric input paths with their assumptions, calculation bases and cited sources.
Case updated September 15, 2026. This technical appendix accompanies the complete case methodology and source register.
Dataset use notice: no Creative Commons license or DOI is asserted. Referenced material remains subject to its publisher’s terms.
A linked reference can support scope without confirming an exact forecast. Assumption entries identify values that still require local validation. Each field path identifies an input in the common business record.
- Model assumption
Authored staged two-van opening allocation. Current new-van, retail-opener, startup-cost and classification sources inform categories but do not verify used vehicles, complete tools, inventory, compliance cost or reserve.
capital.total · capital.low · capital.high · capital.items.0.amount · capital.items.1.amount · capital.items.2.amount · capital.items.3.amount · capital.items.4.amount · capital.items.5.amount · capital.items.6.amount
- Model assumption
Authored completed-job path. Year three is 4 jobs × $475 × 5 days × 50 weeks. Official and consumer sources establish context but not local price, mix, conversion or completion.
forecast.years.0.revenue · forecast.years.1.revenue · forecast.years.2.revenue · forecast.years.3.revenue · forecast.years.4.revenue
- Model assumption
Authored 28% pool for parts, hardware, payment fees, route fuel and sales-linked leakage. Replace it with purchase, return, warranty, credit and callback records.
forecast.years.0.costOfSales · forecast.years.1.costOfSales · forecast.years.2.costOfSales · forecast.years.3.costOfSales · forecast.years.4.costOfSales
- Model assumption
Authored paid owner-manager and employee-technician schedule with employer-cost allowance. National occupation pay and federal payroll-tax guidance are context only.
forecast.years.0.payroll · forecast.years.1.payroll · forecast.years.2.payroll · forecast.years.3.payroll · forecast.years.4.payroll
- Model assumption
Authored vehicle, insurance, tools, storage, software, marketing and administration schedule. It is not a local quote or dated cash forecast.
forecast.years.0.occupancyAndOther · forecast.years.1.occupancyAndOther · forecast.years.2.occupancyAndOther · forecast.years.3.occupancyAndOther · forecast.years.4.occupancyAndOther
- Model assumption
Authored completed-job break-even bridge. The $475 ticket, four jobs, 72% contribution, fixed cost and ramp must reconcile to service mix, paid hours, parts, return visits and collection.
unitEconomics.driver.model · unitEconomics.driver.low · unitEconomics.driver.high · unitEconomics.volume.model · unitEconomics.volume.low · unitEconomics.volume.high · unitEconomics.daysPerWeek.model · unitEconomics.daysPerWeek.low · unitEconomics.daysPerWeek.high · unitEconomics.fixedCostsMonthly · unitEconomics.contributionMargin · unitEconomics.ramp.startShare · unitEconomics.ramp.stepPerMonth · unitEconomics.ramp.horizonMonths