IS AN ADU WORTH IT?
Is an ADU worth it in San Diego?
An ADU may be worth building if it gives your family needed space or brings in rental income at a cost you can afford. These four questions help you weigh the benefits, costs, and risks.
THE SHORT ANSWER
A good ADU solves a real household problem.
It might create income, make room for family, or do both over time. Test the legal path, complete budget, timing, and downside before deciding.
Check my propertyTHE DECISION
Start with the outcome. Then test the plan.
Housing for family
Privacy, caregiving, accessibility, and how long the space may be needed.
Rental income and future flexibility
Estimate the rent you could earn, subtract ongoing costs and loan payments, and consider how you might use the space in the future.
Can you build it?
Confirm the property and permit path.
What will it truly cost?
Use the complete project budget.
What cash remains?
Protect the household cushion.
What if the plan changes?
Keep a smaller, later, or no-build path visible.
COMMON QUESTIONS
What homeowners ask next.
Will an ADU increase my property value?
It may, but the amount is property- and market-specific. Before you count on it, ask an appraiser or an agent for recent nearby sales with and without an ADU.
Is rental income enough to prove an ADU is worth it?
No. Run the income calculator first, then the kit's money section with financing and reserves included; the number that matters is what is left each month after all of them.
What if the ADU is for family?
Measure the housing outcome as well as the money. Write down who will live there, for how long, what the space must do for them, and what it becomes afterwards; then price that, not a generic unit.
When should I decide not to build?
Stop or pause when the legal path is unclear, the household cannot preserve a safe cushion, the site risk is unresolved, or the project only works under optimistic assumptions.
YOUR PROPERTY IS THE NEXT QUESTION
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