Backyard guest house ADU construction
Backyard guest house ADU construction
Cali Dream Construction

FAQ: What is an ADU in San Diego?

Updated February 07, 2026 | Category: FAQ | San Diego, CA

Introduction to Accessory Dwelling Units (ADUs) in San Diego: What You Need to Know

As a San Diego homeowner, you may have heard of the term "ADU" or "accessory dwelling unit" being thrown around in conversations about real estate and construction. But what exactly is an ADU, and how can it benefit you? In this comprehensive guide, we'll delve into the world of ADUs, exploring their definition, benefits, and everything you need to know to get started on your own ADU project in America's Finest City. Our team serves homeowners throughout Escondido and greater San Diego County.

What is an ADU?

An Accessory Dwelling Unit (ADU) is a secondary living space that is built on a property that already has a primary residence. ADUs can be attached or detached from the main house and can range in size from a small studio to a multi-bedroom unit. They are designed to provide additional living space for family members, guests, or even renters, and can be a great way to increase the value and functionality of your property.

In San Diego, ADUs are subject to local codes and regulations, which we'll discuss in more detail later. But first, let's explore some of the benefits of building an ADU on your property.

Benefits of Building an ADU in San Diego

There are many benefits to building an ADU in San Diego, including:

San Diego-Specific Factors to Consider

Before building an ADU in San Diego, there are several local factors to consider, including:

Costs and Timelines for ADU Construction in San Diego

The cost of building an ADU in San Diego can vary widely, depending on the size, design, and features of the unit. On average, you can expect to pay between $100,000 to $300,000 or more for a detached ADU, and $50,000 to $150,000 or more for an attached ADU.

The timeline for ADU construction in San Diego can also vary, but typically ranges from 3 to 12 months, depending on the complexity of the project and the permitting process.

ADU Type Cost Range Timeline
Detached ADU $100,000 - $300,000+ 6-12 months
Attached ADU $50,000 - $150,000+ 3-6 months

Practical Advice for Building an ADU in San Diego

Here are some practical tips to keep in mind when building an ADU in San Diego:

Frequently Asked Questions (FAQs) About ADUs in San Diego

Here are some common questions and answers about ADUs in San Diego:

Conclusion

Building an ADU in San Diego can be a great way to increase the value and functionality of your property, while also providing a flexible and sustainable living space for family members or renters. By understanding the benefits, costs, and local regulations surrounding ADUs, you can make an informed decision about whether an ADU is right for you.

If you're considering building an ADU in San Diego, contact Cali Dream Construction (License #1054602) today at (858) 434-7166 to schedule a consultation and take the first step towards turning your ADU dreams into a reality.

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