ADU Regulations and Zoning in Fullerton

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Understanding ADU rules in Fullerton

Fullerton regulations outline specific rules for building an ADU on your property, taking into account factors such as size, setback requirements, and height.

If you plan to build an ADU in Fullerton, Multitaskr will assist you! Our guide on Fullerton’s ADU regulations provides detailed information about the building requirements for different types of ADUs. Read below to get all the necessary information!

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Basic ADU Regulations in Fullerton

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

In Fullerton, 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 Fullerton

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.

ADU Dimensions and Construction Limitations in Fullerton

When an ADU is constructed is constructed above an existing building or structure or solely through the conversion of an existing building or structure or in the same location and to the same dimensions as an existing structure, it shall be limited in size to the existing square footage of the building or structure converted or replaced, except that the existing building or structure may be expanded up to 150 sq. ft. for the purposes of ingress and egress to the ADU only.

When an ADU is attached to the primary dwelling unit and complies with the development standards as specified below, the maximum floor area shall be the greater of 50% of the floor area of the primary dwelling unit or 1, 000 sq. ft., not to exceed 1, 200 sq. ft. and shall be no less than 150 sq. ft.

When an ADU is detached from the primary dwelling unit and complies with
the development standards as specified below, the floor area shall not
exceed 1, 200 sq. ft. and shall be no less than 150 sq. ft.

Attached ADUs must adhere to the height standards of the underlying zone.

Detached ADUs must adhere to the height standards of the underlying zone.

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 Fullerton

Attached ADUs shall maintain a minimum four-foot setback from rear and side-yard property line. Front yard setback and required building separation requirements are per applicable zoning standards and building code standards, respectively.

Detached ADUs shall maintain a minimum four-foot setback from rear and side-yard property line. Front yard setback and required building separation requirements are per applicable zoning standards and building code standards, respectively.

Parking Requirements for ADUs in Fullerton

For an ADU, a single parking space can be designated. This parking space can be situated within the setback areas or integrated into an existing driveway as tandem parking. If parking spaces are removed to construct an ADU or transformed into one, they do not need to be replaced.

An ADU does not require a parking space if:
– It is situated within a one-half mile radius of public transportation or within one block of a car-share location.
– It is located in an architecturally and historically significant district.
– It is part of the existing primary residence or an accessory structure.
– It is situated within one block of a car-share vehicle.
– It is in an area where on-street parking permits are mandated but not made available to the occupant of the ADU.

ADU Occupancy Requirements in Fullerton

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://www.cityoffullerton.com/home/showpublisheddocument/555/637431713222930000

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Neighborhoods we cover in Fullerton

Artisan Walk, Downtown Fullerton, Santa Fe, SoCo, University Heights, West Coyote Hills

92831, 92832, 92833, 92835

Need help with the regulations applicable to your property? Our team at Multitaskr is always ready to assist you. Schedule a call with one of our Home Solution Experts today!

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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 Fullerton?

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.