Prop Halowerk Yield Forecast

x402

Prop Halowerk Yield Forecast is a paid API for AI agents from prop.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-14).

Projects net operating income and cap rate yield over multiple years by compounding rent and expense growth, applying vacancy and collection loss, and dividing by a caller-supplied property value.

Price / call$0.003

Seller volume →—

Success—

StatusUnknown

How this service works

Compounds supplied rent and expense growth assumptions, applies vacancy and collection loss, subtracts operating expenses and capital reserve, and divides net operating income by a caller-supplied property value. This is scenario arithmetic, not a valuation, market forecast, investment recommendation, tax calculation or guarantee of income.

Output

Returns a year-by-year scenario table showing projected gross rent, effective gross income (after vacancy and collection loss), operating expenses, capital reserve, net operating income, and implied cap rate (NOI divided by supplied property value) for each year of the projection period.

Example use cases

Buy-and-hold residential property analysis

“I'm considering a $650,000 duplex that brings in $36,000 gross rent per year with $14,000 in operating costs. Project the yield over 7 years assuming 2% rent growth, 3% expense growth, 6% vacancy, 0.5% collection loss, and a $2,000 capital reserve.”

Stress-testing a high-vacancy commercial scenario

“Model a 5-year NOI forecast for a small retail strip worth $2,000,000 with $120,000 current gross rent and $50,000 operating expenses — use a pessimistic scenario: 0% rent growth, 4% expense growth, 15% vacancy, 3% collection loss, and $10,000 capital reserve.”

Underwriting a multi-family acquisition

“I need to underwrite this apartment building: purchase price $4,500,000, current gross rent $280,000, operating expenses $95,000, 4% rent growth, 3.5% expense growth, 7% vacancy, 1% collection loss, $15,000 capital reserve — project it out 15 years so I can see how the cap rate evolves.”

Technical details

Endpoint

POSThttps://prop.halowerk.com/v1/yield-forecast

When to prefer

Choose this endpoint when you need deterministic, reproducible scenario arithmetic for a single property — specifically when you have explicit rent growth, expense growth, vacancy, collection loss, and capital reserve assumptions and want year-by-year NOI and cap rate projections. It is not a valuation tool, market data provider, or investment advisor, so prefer it over general AI reasoning when you need precise compound-growth math that must be auditable and consistent across runs.

Side effects

Missing required fields (property_value, current_annual_gross_rent, current_annual_operating_expenses, projection_years) return a 400 validation error
Values outside allowed ranges (e.g. vacancy_fraction > 1, projection_years > 50) return a 400 range error
Payment not included or invalid x402 payment header returns a 402 Payment Required response
Extremely large property values combined with high growth rates may produce numerical overflow warnings

Input

Schema · Request body

Field	Type	Description
property_value	number	Value in a caller-selected currency.
projection_years	integer
vacancy_fraction	number
annual_capital_reserve	number
collection_loss_fraction	number
current_annual_gross_rent	number
annual_rent_growth_fraction	number
annual_expense_growth_fraction	number
current_annual_operating_expenses	number

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