The /property-estimate endpoint provides a complete investment projection for a ZIP code — combining market stats, rental data, and standard underwriting assumptions to produce cap rate, monthly cash flow, and cash-on-cash return estimates.
Request
GET /property-estimate?zip_code={zip_code}
Parameters:
zip_code (string, required) — 5-digit US ZIP code
Headers:
x-rapidapi-proxy-secret: YOUR_API_KEY
Response Schema
{
"zip_code": "78701",
"estimated_cap_rate": 4.2, // percent
"gross_yield_pct": 4.67, // percent
"cash_on_cash_20pct_down": 1.8, // percent, at 20% down / current rate
"monthly_cash_flow": -210, // USD (negative = cash flow negative)
"annual_noi": 19950, // USD
"median_sale_price": 475000,
"fair_market_rent_2br": 1850,
"assumed_expense_ratio": 0.45, // 45% of gross rent
"assumed_mortgage_rate": 7.0, // percent (current estimate)
"is_estimated": false
}
Assumptions Used
| Parameter | Assumption |
|---|---|
| Down payment | 20% of median sale price |
| Mortgage rate | Current 30-year investment property rate |
| Expense ratio | 45% of gross rent (vacancy + mgmt + maintenance + insurance + tax) |
| Bedroom count | 2-bedroom (HUD BR2 FMR) |
These are standardised assumptions for screening purposes. Your actual results will vary based on purchase price negotiated, financing terms, property-specific expenses, and local management costs. Always verify with a full underwriting model before purchasing.