Analyzes a multifamily investment property against your goals.
Only
address and number_of_units are required
— all other parameters are optional and default to
location-calibrated market values when omitted.
Property & Goal
2 required · 4 optional
▾
FieldTypeDescription
address
string
required
Full US property address including street, city, state,
and ZIP.
number_of_units
integer
required
Total rentable units at the property.
1 – 500
asking_price
integer
optional
Purchase price in USD. Enables cash-on-cash, DSCR, and
ROI calculations.
$50,000 – $100,000,000
monthly_rent
integer
optional
Average monthly rent per unit in USD. Defaults to local
market rent.
$200 – $25,000
goal_metric
enum
optional
Return metric to optimize for. Defaults to
cash_on_cash_return.
cash_on_cash_return · cap_rate ·
debt_service_coverage_ratio · cash_velocity
goal_target
number
optional
Target for goal_metric. Cash-on-cash
return uses a percentage, DSCR uses a ratio, and cash
velocity uses monthly dollars per unit. Defaults to a
location-calibrated value.
Performance & Stabilization
5 optional
▾
FieldTypeDescription
vacancy_rate
number
optional
Expected vacancy as a percentage. Under 4% is tight;
above 8% suggests softer demand. Defaults to market
average.
0 – 30%
management_fee_rate
number
optional
Property management fee as a percentage of gross rent.
Typically 3–12%.
0 – 25%
repair_maintenance_capex_rate
number
optional
Repairs, maintenance, and capex reserve as a percentage
of gross rent. Typically 8–20% depending on property
age.
0 – 30%
make_ready_amount
integer
optional
One-time post-acquisition touch-up allowance in USD.
Often $0 for stabilized properties.
$0 – $10,000,000
total_monthly_other_expenses
integer
optional
Total landlord-paid monthly expenses not captured
elsewhere (utilities, HOA, etc.) in USD for the whole
property.
$0 – $25,000 / month
FieldTypeDescription
mortgage_interest_rate
number
optional
Annual mortgage interest rate as a percentage. Defaults
to current market rate for the location. A 0.5% change ≈
$180/mo on a $400k loan.
0 – 25%
mortgage_term
integer
optional
Loan term in years. Defaults to 30. Common values: 10,
15, 20, 25, 30.
1 – 30 years
down_payment_percentage
number
optional
Down payment as a percentage of purchase price. Typical:
20–25% for conventional loans.
0 – 100%
closing_cost_percentage
number
optional
Closing costs as a percentage of purchase price.
Typically 2–5%; varies by lender and local taxes.
0 – 10%
Location Dynamics
4 optional
▾
FieldTypeDescription
property_tax_rate
number
optional
Annual property tax as a percentage of assessed value.
Varies by county and local levy.
0 – 5%
home_price_growth
number
optional
Expected annual property value growth as a percentage,
driven by local supply, demand, and job trends.
-10 – 20%
rent_growth
number
optional
Expected annual rent increase as a percentage. Negative
values model declining rent markets.
-10 – 30%
FieldTypeDescription
property_insurance_rate
number
optional
Standard property insurance as a percentage of property
value annually. Typically 0.3–0.8%; higher in coastal
areas.
0 – 8%
flood_insurance_rate
number
optional
Flood insurance as a percentage of property value.
Applies only in flood zones; varies by elevation and
coverage.
0 – 8%
wind_insurance_rate
number
optional
Wind insurance as a percentage of property value. Common
in hurricane-prone regions.
0 – 8%
Note on percentage fields: All rate and
percentage parameters are plain numbers — e.g.
7.12 for 7.12%, not 0.0712.
200 Success
400 Bad Request
401 Unauthorized
429 Rate Limited