Ask us anything about ADUs (en inglés y también en español)!
Have a question about where to get started on your Accessory Dwelling Unit journey? The Napa Sonoma ADU Center is here to help you along the way.
Brindamos ayuda a los propietarios de viviendas en inglés y español // We provide help to homeowners in both English and Spanish.
And starting soon, we will be providing ADU feasibility consultations as well as a list of vetted vendors on our website, including builders, designers, architects, prefab companies, and more.
When you reach out for ADU help, we will get back to you right away to help you navigate your questions or concerns at any stage of the ADU process. We are building relationships with jurisdictions across Napa and Sonoma Counties so that we can work closely with planning and building departments to make sure you have accurate and comprehensive information about your property and your ADU.
Feel free to check out some of our concrete tools and resources to get started, then reach out with any follow-up questions you may have:
ADU Workbook - helps homeowners in Napa & Sonoma Counties through the ADU planning, designing, permitting, building, and rental process.
ADU Calculator - helps estimate the costs, returns, and benefits associated with building an ADU.
Address Lookup Tool - helps identify if you can build an ADU on your property.
In most cases, if you live in a legally built single family home and meet fire codes, you can convert any existing structure into an ADU.
If you are looking to build something new that adds square footage to your property, you’ll want to use our address lookup tool and talk to your city about what you’re eligible to build.
City Rules - lists city standards for ADUs in all cities and unincorporated places in Napa and Sonoma Counties.
Sample ADU Floorplans - find inspiration from your neighbors' ADU plans.
FAQs - a list of frequently asked questions about building ADUs.
In addition, you can sign up here for our ADU Newsletter to stay in touch and learn more about new ADU services and resources available for homeowners as we continue to roll them out.