Input schema (JSON)
{
"type": "object",
"required": [
"units",
"price",
"loan_type",
"rate_pct",
"rents"
],
"properties": {
"price": {
"type": "number",
"maximum": 20000000,
"minimum": 10000,
"description": "Purchase price in dollars."
},
"rents": {
"type": "array",
"items": {
"type": "number",
"maximum": 100000,
"minimum": 0
},
"maxItems": 4,
"minItems": 2,
"description": "Monthly market rent per unit, one per unit; the first is the unit the buyer will live in. E.g. [1800, 1800, 1800]."
},
"state": {
"type": "string",
"pattern": "^[A-Za-z]{2}$",
"description": "Optional two-letter state code, to check the loan against the county limit."
},
"units": {
"enum": [
2,
3,
4
],
"type": "integer",
"description": "Units in the building: 2 duplex, 3 triplex, 4 fourplex."
},
"county": {
"type": "string",
"maxLength": 80,
"minLength": 2,
"description": "Optional county name (needs state)."
},
"rate_pct": {
"type": "number",
"maximum": 20,
"minimum": 0,
"description": "Interest rate in percent, e.g. 6.5. Use the rate the buyer was quoted; there is no default."
},
"loan_type": {
"enum": [
"FHA",
"VA",
"Conventional"
],
"type": "string",
"description": "Loan program."
},
"term_years": {
"enum": [
15,
30
],
"type": "integer",
"default": 30,
"description": "Loan term."
},
"vacancy_pct": {
"type": "number",
"maximum": 100,
"minimum": 0,
"description": "Appraiser's vacancy and maintenance estimate, %. The self-sufficiency test uses the greater of this or 25."
},
"va_entitlement": {
"enum": [
"full",
"partial"
],
"type": "string",
"default": "full",
"description": "VA only: full (none in use) or partial (some still in use on another loan)."
},
"down_payment_pct": {
"type": "number",
"maximum": 100,
"minimum": 0,
"description": "Down payment as % of price. Defaults to 3.5 (FHA), 0 (VA) or 5 (Conventional)."
},
"insurance_annual": {
"type": "number",
"default": 0,
"maximum": 1000000,
"minimum": 0,
"description": "Annual homeowners insurance in dollars."
},
"finance_upfront_mip": {
"type": "boolean",
"default": true,
"description": "FHA only: add the 1.75% upfront premium to the loan."
},
"property_tax_annual": {
"type": "number",
"default": 0,
"maximum": 1000000,
"minimum": 0,
"description": "Annual property tax in dollars."
}
},
"additionalProperties": false
}