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ADU Regulations and Zoning in Los Angeles County

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Understanding ADU rules in Los Angeles County

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Navigating the intricacies of ADU zoning regulations in Los Angeles County requires a comprehensive understanding of the specific rules governing construction on your property. Los Angeles County regulations meticulously detail criteria such as ADU size, setback requirements, and height specifications. The success of your ADU project hinges on a nuanced comprehension of these regulations, which are subject to the distinct municipal laws applicable to your property's location.

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Basic ADU Regulations in Los Angeles County

Our guide on Los Angeles County ADU regulations provides detailed information about the building requirements for different types of ADUs. Read below to get all the necessary information.

In Los Angeles County, properties designated for both single-family and multi-family purposes might meet the criteria necessary for the construction of Accessory Dwelling Units (ADUs).

It is essential to consult the specific ADU zoning regulations applicable to your jurisdiction to ensure compliance. ADU zoning regulations typically address factors such as ADU size, setback requirements, height specifications, and other relevant guidelines. By understanding and adhering to the appropriate zoning regulations, property owners can determine the feasibility and eligibility of constructing ADUs on their designated properties, promoting informed decision-making in the pursuit of additional dwelling unit development.

If you need help navigating and understanding ADU zoning regulations for your jurisdiction feel free to book a quick consultation to get more detailed information or send an email to [email protected]

Number of ADUs allowed in Los Angeles County

The number of ADUs you’re able to build depends on how your lot is zoned:

Properties designated for single-family use are permitted to add one attached ADU, one detached and one JADU.
In the case of properties zoned for multi-family use, you may include two new detached ADUs and, additionally, one attached ADU.

The property is zoned to allow a single-family residence (SFR) or multi-family residence (MFR). For coastal areas, refer to the applicable Local Coastal Program

A legal SFR or MFR exists on the property or is proposed to be built concurrently with the ADU(s).

ADU Dimensions and Construction Limitations in Los Angeles County

Attached ADUs in Los Angeles County can have a maximum size of 1,200 sq. ft. or 50% of the floor area of your primary dwelling, whichever is less.

Detached ADUs in Los Angeles County can have a maximum size of 1,200 sq. ft. regardless of the size of the primary dwelling.

25 ft. or as specified by CSD/Specific Plan, whichever is less

Consistency in exterior features, including roofing, trim, walls, windows, and color palette, between the ADU and the primary dwelling unit is required.

ADU Setbacks Requirements in Los Angeles County

Attached ADUs are expected to conform to the setback regulations that are applicable to the primary dwelling.

Front: Title 22 *
Side: 4 ft.
Rear: 4 ft.

*Regular front yard setback requirements apply unless such requirement would preclude an ADU of at least 800 square feet.

Front: Title 22 *
Side: 4 ft.
Rear: 4 ft.

*Regular front yard setback requirements apply unless such requirement would preclude an ADU of at least 800 square feet.

A new ADU structure must have a minimum side and rear setback of four feet.

Parking Requirements for ADUs in Los Angeles County

When a garage, carport, or covered parking structure is demolished or rendered fully or partially unusable in conjunction with the construction of the ADU or conversion of the structure to an ADU, no replacement parking is required for the existing dwelling nor ADU. Covered parking is still required for the existing dwelling(s) if the parking structure is not being converted into an ADU.

ADU Occupancy Requirements in Los Angeles County

Cities don’t require owner occupancy until 2025. However, should a property have both an ADU and JADU, JADU law requires owner-occupancy of either the newly created JADU, or the single-family residence.

ADUs shall only be rented for a term of at least 30 days.

*Source: https://planning.lacounty.gov/wp-content/uploads/2023/03/adu_ordinance-summary.pdf

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Los Angeles County, California

Areas of Coverage in Los Angeles County

To learn more about ADUs in your area, select your city from the list.

If your city isn't listed, no problem! Contact us to discuss your project; we might still be able to assist you.

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Frequently Asked Questions

The following list of frequently asked questions on ADUs might provide the answers regarding financing, zoning feasibility, city regulations, site preparation and construction.

What is an ADU?

An Accessory Dwelling Unit (ADU) is an additional or secondary residential dwelling, either attached or detached, located on the same lot as the primary residence.

What types of ADUs are allowed to be built in Los Angeles County?

1) Detached: Are standalone structures separated from the main residence. 2) Attached: Are integrated into the primary dwelling. 3) Garage Conversion: Consists of turning an existing garage into a fully equipped living space. 4) JADU: Are independent units up to 500 square feet, located within existing homes.

How much time is required to plan, design, and construct an ADU?

The timeframe can fluctuate depending on various factors, such as the chosen design, construction process, and the scheduling availability of your builder.

What is the price range for an ADU?

The cost of an ADU can vary significantly, taking into account factors such as the ADU's dimensions, design, construction, and the expenses associated with materials and labor.

What are the reasons for considering an ADU as an investment?

Rental Income, Property Value Appreciation, Housing for Family, Friends, or Caregivers and, Opportunity for Downsizing within Your Community.

What are the financing options available for ADU construction?

An Accessory Dwelling Unit (ADU) can be financed through various means depending on your financial situation and preferences. Contact us today to discuss your options and find the best solution.

If you have any further inquiries, please contact us at [email protected] or give us a call at (619) 514-4023. We will be happy to assist you.

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Financing

We assist you in securing 100% ADU financing with the best terms and options to help you achieve your financial and ROI goals.

Feasibility

Our team will help you understand the potential of your property and identify the best location for your Accessory Dwelling Unit.

Design

Our pre-approved ADU floor plans and dedicated experts collaborate with you to develop a design strategy that meets your specific needs, offering time and cost savings.

Permitting

Our highly experienced permitting department creates your architectural plan set to ensure that it meets city requirements.

Construction