ADU Calculator
Analyze accessory dwelling unit costs and rental income potential.
Property & ADU Details
$450,000
Construction Costs
$250/sqft
Budget ($150)Mid ($250)High-End ($500)
10%
Construction (600 sqft × $250)$150,000
Soft Costs$23,000
Site Costs$17,000
Contingency (10%)$19,000
Total Cost$209,000
Financing
Monthly Payment$2,058
Rental Income
70%
How much the ADU adds to property value relative to cost
Review Numbers
8.7% Cap Rate
Total Investment
$209,000
$348/sqft all-in
Cash Flow
Effective Rent$1,710/mo
Operating Expenses-$200/mo
NOI$1,510/mo
Debt Service-$2,058/mo
Monthly Cash Flow-$548
Returns
Cap Rate8.7%
Cash-on-Cash-3.1%
Payback Period11.5 years
5-Year ROI-46%
Value Impact
Current Value$450,000
Value Add+$146,300
New Value$596,300
Instant Equity-$62,700
Need Help With ADU Financing?
We can connect you with lenders offering construction loans and cash-out refinancing for ADU projects.