A second unit on your lot can bring in rent, and it adds permitted, livable square footage to a property you already own. What that is worth depends on your street and what you want the unit to do — which is a conversation, not a calculator.
An ADU is not a converted basement or a room over the garage. It is a separate, permitted dwelling with its own entrance — and that is the difference a tenant, an appraiser and a future buyer all price differently.
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Once you have a rent figure you trust, the arithmetic is short. Put your own number in the first row.
Does not include property tax impact, insurance adjustment, or income tax. Consult your accountant for net-of-tax returns.
ADU rental yield
Net annual income ÷ total project cost, pre-tax — run it with your own comp
S&P 500 (10-yr avg)
Before inflation, with volatility
High-yield savings
Current rates, fully taxable
Home equity (sitting)
Earns nothing until you sell
An ADU converts idle home equity into a cash-flowing asset — and unlike stocks, it's physically attached to your property, appreciating alongside it.
Beyond rental income, an ADU changes what your property is worth.
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The first step is knowing which plan sizes fit your property. Our free finder checks your lot against the zoning your own jurisdiction publishes — eighteen of them across the Front Range.
Keep exploring
ADUs for family
Aging parents, multigenerational living, childcare.
How to finance an ADU
HELOC, construction loans, and CHFA options.
Process & timeline
What to expect from contract to move-in.
Floor plans & pricing
Five plans, three finish grades, five architectural styles.
About Addwell
Who we are and how we build.