San Diego ADU Laws: What Homeowners Need to Know

Thanks to new opportunities for additional income, a bit more space, or property-boosting potential, accessory dwelling units (ADUs) are gaining popularity. That's especially true in San Diego, where the real estate market is competitive.

Whether you're a buyer, seller, or just exploring your options, understanding California ADU laws and regulations can help you make informed decisions.

Here, we'll break down what ADUs are, go over just a few of their many benefits, and review some key San Diego ADU laws that homeowners should be aware of.

What Are Accessory Dwelling Units?

Granny flats, in-law suites, she-sheds, backyard cottages—accessory dwelling units can go by many names. At their core, they're smaller, secondary homes built on the same lot as an existing residential property, often in the backyard. They can be detached units, connected to the primary home, or even converted spaces within the main house itself, such as a basement.

ADUs are fully functional, independent living spaces complete with kitchens and bathrooms. When it comes to maximizing space and increasing the versatility of your property, ADUs can be a game-changer.

The Benefits of ADUs

Sellers

In an age where space is limited, home prices are rising, and the cost of living keeps increasing, it's easy to see why homes with ADUs are attractive. If you're looking to sell your propertythat features an ADU, you'll likely attract many buyers.

With more people interested in your property, there's the potential to create a bidding war and secure top-dollar for your home. Looking to get your home ready for the market? Put our Compass Concierge servicesto use. We'll ensure your home, including your ADU, stands out.

Buyers

ADUs are a great option for multi-generational families who want to live together while still enjoying their own space and privacy. They can also be used as a home office, guest suite, or even short-term rental space. That versatility and flexibility appeal to many modern buyers hitting the market.

San Diego ADU Regulations

Size

San Diego ADU rules have changed when it comes to dimensions. While exact measurements may vary depending on your zoning laws, in general, ADUs cannot exceed 1,200 square feet but must be at least 150 square feet. If an ADU is attached to the primary residence, it can't be more than 50% of the size of the home.

Location

ADUs are allowed in most San Diego residential zones, including multi-family and single-family ones. However, properties must meet specific lot requirements, and those requirements can vary zone to zone.

Number of ADUs Allowed

If you have a single-family property, you're typically allowed one ADU and a junior accessory dwelling unit (JADU). Multi-family properties can have more than one ADU; the exact number depends on zoning and space requirements.

Multiple-Dwelling Unit Zones

Do you live in a multi-dwelling unit zone? Then you may be able to add multiple ADUs, further boosting your property value or potential for rental income.

Setback Regulations

Generally speaking, ADUs must be at least four feet from side or rear property lines. However, it's important to research your zone and type of ADU, as converted spaces, such as garages, may have more flexible setback rules.

Parking Requirements

A big win for homeowners when it comes to new San Diego ADU regulations is the changed parking requirements. Now, ADUs located within half a mile of public transportation stops or in designated historic zones are exempt from requiring additional parking.

Other ADUs Laws to Take Note Of

• In order to qualify as independent living units (such as for rental purposes), ADUs must include basic amenities, such as a kitchen and bathroom.
• While an ADU can be rented, it cannot be sold separately from the main residence.
• There are specific building codes, permits, and regulations to comply with, and they can vary from region to region. Before finalizing your San Diego ADU plans, ensure you comply with local and state laws.

Make the Most of ADUs

Whether you're thinking about purchasing property with an accessory dwelling unit or adding one to an existing home you plan on selling down the road, The Selby Team can help you achieve your real estate goals. Learn more about our personalized, hands-on approach and how we can help you make the most of your home. Let's get started!