Pressure Washing Business input evidence register
45 numeric input paths with their assumptions, calculation bases and cited sources.
Case updated September 11, 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.
- Source-based input
Vendor specifications anchor the trailer rating and rounded equipment allowance; USGS supports the transparent water-weight calculation. Tax, installation and vehicle suitability remain unverified.
capital.items.1.amount
- Source-based input
Observed component prices inform a wider accessory allowance that remains an authored bundle rather than a quote.
capital.items.2.amount
- Source-based input
Recovery listings show the possible equipment magnitude and city guidance establishes the need to plan wastewater routing. Requirements vary by job and jurisdiction.
capital.items.3.amount
- Model assumption
SBA supplies the planning framework and current pages provide insurance and one local fee context. All selected dollar allocations are authored assumptions requiring local quotes.
capital.total · capital.low · capital.high · capital.items.0.amount · capital.items.4.amount · capital.items.5.amount · capital.items.6.amount · capital.items.7.amount
- Model assumption
External sources provide bounded price, wage, fuel and compliance context only. Every job, price, staffing, cost, ramp and forecast value is an authored operating scenario.
forecast.years.0.revenue · forecast.years.0.costOfSales · forecast.years.0.payroll · forecast.years.0.occupancyAndOther · forecast.years.1.revenue · forecast.years.1.costOfSales · forecast.years.1.payroll · forecast.years.1.occupancyAndOther · forecast.years.2.revenue · forecast.years.2.costOfSales · forecast.years.2.payroll · forecast.years.2.occupancyAndOther · forecast.years.3.revenue · forecast.years.3.costOfSales · forecast.years.3.payroll · forecast.years.3.occupancyAndOther · forecast.years.4.revenue · forecast.years.4.costOfSales · forecast.years.4.payroll · forecast.years.4.occupancyAndOther · 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