ADU Build Cost & Rental Yield Solver

Calculate all-in construction expenses, garage conversion vs detached granny flats, financing debt service, and net monthly passive rental cash flow.

⚙️ ADU Construction & Rental Parameters

ADU Architecture & Build Type

Finished Living Area (Square Feet)

Interior Finish & Fixture Level

Target Monthly Rental Income

Cash Down Payment / Out of Pocket

HELOC / Construction Loan Interest Rate (%)

Operating Expense Reserve (% of Rent)

Net Monthly Passive Cash Flow

+$748/mo

All-In Cost $193,050

Cap Rate 11.6%

Cash-on-Cash 25.6%

Total All-In Build Budget $193,050 ($275/sqft + $14,300 permits)

Monthly Debt Service Payment $1,077/month loan payment

Annual Net Passive Cash Flow +$8,976 / year net profit

Full Investment Payback Timeline 3.9 years to recoup cash down payment

Verified Local Contractors

Get up to 3 competitive bids for ADU construction, garage conversions, and home additions from vetted pros.

Contractor Tested

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