Chapter 04 · The Investment
What does an ADU actually earn you?
Pick a model and adjust the numbers. Everything updates live: your financing payment, rental return, and the equity an ADU adds to your home. No email required.
3
calculators in one
14
models pre-loaded
~115%
of cost added to home value
Value-add assumption: California average for a permitted, site-delivered ADU
Down payment20%
Interest rate7.5%
Loan term30 yr
Monthly payment—
Total interest—
Total paid over the loan—
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Estimates only, for planning purposes, not financial advice. Property tax assumed at 1.25% and insurance at 0.5% of ADU cost; rent grows ~3%/yr; an ADU is assumed to add ~115% of its cost to property value (California average). Your actual numbers will vary.
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