How to build an ADU

by Richard Jaramillo (RJ) on March 26th, 2022

Richard “RJ” and wife Beth Jaramillo live in the San Diego community of Rancho Bernardo. Living in San Diego County for over 35 years, they are going through the experience of “empty nesting”, aging parents and their future retirement years.

With all these things happing in front of them, RJ & Beth decided to leave their options open with the build out of an Accessory Dwelling Unit (ADU) to give them the flexibility for the future.

New state laws have made it easier than ever to build an ADU in California. Start by visiting your city to discuss your ideas. Make sure to consider costs, rents, and the value of ADUs.

1. Design - Imagine all the ways your ADU can be used over the years. Who might live there? How much space will they need? How fancy will it be? Will it have special features like wheelchair access or a garden? You’ll need a designer, architect or builder to help youo follow all the rules and refine your budget

2. Permits - A new state law makes it easier, faster and cheaper to get permits for secondary units, but each city will still have its own process. Visit your city’s Planning and Building Department to learn the rules, pick up forms and ask about fees. Experienced professionals definitely make the process easier.

3. Construction - Get detailed bids from several contractors, call their references and check their licenses with the state. Get a written contract that lists all costs and details up front to avoid expensive changes later. Communicate frequently and verify progress before making payments.

4. Move in - Construction is complete, and now it’s time for someone to move in. This may be you, a friend, family member or renter. If it is a tenant, there are plenty of resources to help you become a landlord, including organizations that help you manage your unit. Consider local pricing in similar units to estimate a reasonable range price to rent for.