Frequently Asked Questions (FAQs) about ADUs with

At, a division of Wizdom Construction serving all of San Diego County, we understand the myriad of questions homeowners have about ADUs. Below, we’ve compiled and answered some of the most commonly asked questions to guide you on your ADU journey.

1. What exactly is an ADU?

An ADU, or Auxiliary Dwelling Unit, is a secondary housing unit on a single-family residential lot. It can be attached to the main house, detached, or even a conversion of an existing structure like a garage. ADUs are often referred to as granny flats, in-law suites, backyard cottages, and more.

2. Why are ADUs gaining popularity in San Diego?

ADUs are seen as a solution to housing shortages, providing affordable living options, and allowing homeowners to earn rental income. Additionally, they facilitate multi-generational living, helping families stay close.

3. Do I need a special permit to build an ADU in San Diego?

Yes, you’ll need to obtain a permit from local authorities. San Diego has specific regulations regarding ADUs, and we at can guide you through the permitting process.

4. How big can my ADU be?

The size of an ADU often depends on local regulations and the size of your lot. In San Diego, there are specific guidelines determining the maximum size of ADUs.

5. Can I rent out my ADU?

Absolutely! Many homeowners in San Diego choose to rent out their ADUs for additional income. However, you’ll need to adhere to local rental regulations and ensure that your ADU meets safety and habitability standards.

6. What’s the difference between an ADU and a ‘granny flat’ or ‘in-law suite’?

While the terms are often used interchangeably, they all refer to secondary dwelling units. The difference is primarily in naming conventions, with “granny flat” often implying a space for elderly relatives and “in-law suite” for extended family.

7. How long does it take to construct an ADU?

The construction timeline varies based on the size, design complexity, and specific requirements of your ADU. At, we ensure efficient and high-quality construction, keeping you informed every step of the way.

8. How do ADUs impact property values?

Typically, ADUs can increase the value of a property, given the added utility and potential for rental income. They also make properties more attractive to potential buyers who value flexibility and additional space.

For any more specific questions or deeper insights into ADUs, don’t hesitate to reach out to us directly. At, we’re always here to guide and assist you.