Can I Build An ADU On My Property?

ADU render on property (NT Studio)

A Quick Definition

ADUs have become a hot commodity in recent years, especially across the Golden State. While they can offer an appealing ROI, responsible homeowners should get answers to fundamental questions before taking on such a large investment project.

An ADU (accessory dwelling unit) is a secondary living space wholly independent of the primary residence on a lot. It can be an extension attached or detached to the main residence or built a short distance away, for example, in the backyard.

Can I Build an ADU on My Property in California?

In an effort to stem a state-wide housing shortage crisis, the ADU green-lighting process in California has seen significant streamlining in recent years—so the answer for most Californian homeowners is a resounding “yes.”

Do you need a permit to build an ADU following the streamlining? “Yes” again—there is still some red tape to contend with, but since a 2017 legislative effort to reduce the bureaucratic burden on homeowners, obtaining a permit is much easier than just a few years ago.

For example, any project is near-guaranteed approval as long as a list of objective requirements is met, bearing in mind that local requirements may differ from area to area. Once all the bureaucratic boxes are ticked, the real questions are, "How can I build an ADU on my property?” "Is it within budget?” and "Is my property suitable for an ADU?”

Since there’s no one-size-fits-all answer, these questions are best addressed by the ADU experts—folks who have years of experience helping homeowners convert unused spaces in their houses or yards into second homes for extended family or rental arrangements, creating a long-term and secure passive income.

No One Size Fits All

The assessment steps in building an ADU in San Diego, for example, will differ even from area to area, but a few features make a lot or primary dwelling an ideal candidate for an ADU addition or conversion. 

Size and ease of access are critical variables, and while a lack of parking was once a roadblock to many ADU construction projects, it is now much less of an issue. For example, parking space is no longer required if the property is located within half a mile of public transportation.

It’s important to keep in mind that there is no one-size-fits-all solution when it comes to making the initial assessment. The responsible homeowner should prioritize consulting expert designers and planners before looking into ADU construction loans or junior ADU plans. 

For homeowners in America’s finest city looking for ADU builders, San Diego offers some of the most experienced trade hands in the industry who know the process from top to bottom. 

From pre-construction (permit acquisition to safety regulation, building code, parking compliances, and cost analyses) to maximizing the design potential and ensuring a smooth implementation until completion, the best ADU builders in San Diego work closely with clients to ensure utmost transparency, satisfaction, and peace of mind throughout the process.

Detached ADU render in backyard (NT Studio)

Can I Build an ADU in My Front Yard?

Generally speaking, yes, it is possible. However, there are certain important factors to consider beyond state zoning laws and obtaining the permit.

For example, local jurisdictions often impose setback limitations, which means that the structure must stand at a minimum distance from the road or property line. Local zoning authorities tend to dictate other rules, such as height or lot coverage, and placement (in front yards) may or may not be against their rules.

As with all things related to ADU California requirements, it is best to check in with your local zoning department or the top ADU professionals.

Of course, even with the most discretion-conscious designs in mind, homeowners with property in a Homeowner’s Association should consult with members to ensure that their plans do not conflict with existing restrictions.

Other crucial factors should be considered, including utilities infrastructure (water, sewage, electricity), safety measures, and environmental impacts.

Can I Have 2 ADUs on My Property?

The short answer is that homeowners of lots with single-family dwellings are allowed to apply for the building of two ADUs. 

However, it is important to note this number may vary—or increase dramatically—from area to area (when building an ADU (or multiple ADUs) in San Diego, for example).

Multiple ADU rendering in one property (NT Studio)

How Many ADUs Can I Build On My Property? 

Generally speaking, in lots with a single-family residence, homeowners are permitted to have one ADU of any type (attached or detached) and one junior ADU on their property, providing they meet specifications. 

A junior ADU is a little different from a standard ADU in that it must be of a specific size (no more than 500 square feet). JADUs are not required to have their own sanitary facilities, but like ADUs, they must have kitchen utilities and adequate sleeping space. For the most part, a junior ADU is part of the main property.

In San Diego, thanks to an ADU bonus program, in addition to one standard ADU and one junior ADU, homeowners can obtain permission to build a moderate or low-income (affordable) ADU, which then grants the homeowner permission to build an additional standard ADU lot, making a total of four ADUs. 

In some areas in San Diego, such as those in the Transit Priority Area,  the only limit on how many bonus ADUs can be built is the amount of space on the lot.

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