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Camarillo ADUs

Everything about building Accessory Dwelling Units in Camarillo, CA

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574 sqft
Bell Canyon

749 sf
1 Bed

Camarillo ADU Guidelines Last Updated 09/23/21

The city government of Camarillo will approve ADUs under California's statewide mandated regulations.
The California Building Code (CBC) 2019 is adopted.


City Hint: The City of Camarillo permitted a total of 37 ADU projects in the past year of 2020.

Number of ADUs allowed:

Single-Family Parcel.
1. One internal or attached ADU, or one JADU, is permitted per parcel with a proposed or existing single-family dwelling.
2. One detached, new construction or conversion of an existing structure, ADU is permitted for a parcel with a proposed or existing single-family dwelling. The detached ADU may be combined only with a JADU as provided in subsection (A)(1) above.
Multifamily Parcel.
1. At least one internal ADU is permitted within an existing multifamily dwelling structure up to a maximum of 25 percent of the existing number of multifamily units within the portions of an existing multifamily dwelling structure that are not used as livable space; and
2. Not more than two detached ADUs may be located on a parcel that has an existing multifamily dwelling.

Types of ADUs allowed:

Detached ADU, Attached ADU, Junior ADU are permitted. ADUs may be new construction or converted from existing space. JADUs must be converted from existing space.

Lot size:

Single family and multi-family residential lots will not be subject to the minimum lot size of the underlying zoning district or by ordinance for Accessory Dwelling Unit (ADU) projects. ~ AB68

ADU size:

Maximum Size.
1. The maximum size of an internal or attached ADU with one bedroom or less may not exceed 850 square feet.
2. The maximum size of an internal or attached ADD with more than one bedroom may not exceed 1000 square feet, or 1200 square' feet if the lot is one or more acres in size.
3. The maximum size of a detached ADD is as follows:
(a) 850 square feet if one bedroom or less;
(b) 1,000 square feet if more than one bedroom, or 1200 square feet if the lot is one or more acres in size; or
(c) 800 square feet if combined on a lot with a JADU.


1. An ADU must conform to the development standards for the underlying zone, including, but not limited to, standards for front, rear and side setbacks of at least four feet, and lot coverage. Notwithstanding the prior sentence, no applicable lot coverage, floor area ratio, or private open space standards will prohibit an ADU that does not exceed 800 square feet officer area, a height of no more than 16 feet, and has four-foot side and rear yard setbacks, provided the ADU complies with all other applicable standards of this chapter.
2. No additional setback is required for an existing living area or an accessory structure that is converted into an ADU or a portion of an ADU.


A. Number. The parking requirement for an attached or detached ADU is one open or enclosed parking space per unit. No additional parking, or reconfiguration of existing parking on the lot, is required for an internal ADU.
B. Location. Required parking spaces may be provided as tandem parking on a driveway. Off-street parking is permitted in setback areas in locations determined by the city or through tandem parking, unless specific findings are made that parking in setback areas or tandem parking is not feasible based upon specific site or regional topographical or fire and life safety conditions.
C. Exemptions. No parking is required for an ADU in any of the following instances:
1. The ADU is located within one-half mile walking distance of public transit.
2. The ADU is located within an architecturally and historically significant historic district.
3. The ADU is an internal ADU.
4. When there is a car share vehicle located within one block of the ADU.
5. When on-street parking permits are required but not offered to the occupant of the ADU.
D. Conversion of Existing Parking Structures. When a garage, carport, or covered parking structure is demolished in conjunction with the construction of an ADU or converted to an ADU, replacement parking stalls are not required for the demolished or converted parking structure.

Fire Safety:

Accessory dwelling units shall not be required to provide fire sprinklers unless they are also required for the primary dwelling. ~ State Standards

Shape, materials and style:

Design of an attached or detached ADU will be administratively reviewed by the community development-department under the following standards:
A. The design, color, material, and texture of the roof must be substantially the same as the primary dwelling unit.
B. The color, material, and texture of all building walls must be similar to, and compatible with, the primary dweiling unit.
0. The architectural style of the ADU must be the same or similar to the primary dwelling unit, or, if no architectural style can be identified, the design of the ADU must be architecturally compatible with the primary dwelling unit.


Maximum Height. No detached ADU may be more than 16 feet in height as measured from finished grade. A two-story attached ADU will require approval of a plan review.

Design review:

The municipality shall provide a ministerial review process which is not based on a discretionary approval for an ADU. The process shall take no less than 120 days. Valid applications submitted for ADUs, if not approved or denied within 120 days from submission, shall be considered approved. ~ State Standards

Zone Clearance is required for all ADUs. Additionally, a Plan Review is required for attached ADUs over 16 feet in height

Number of Bedrooms:

No maximum number of bedrooms is established other than that implied by the maximum size of an ADU allowed. ~ State Standards


Property owner must live in either the primary dwelling unit or the junior ADU. Owner-occupancy is not required for attached, internal, and detached ADUs, if the ADU is approved between 1/1/2020 and 12/31/2024. Rental period must be longer than 30 consecutive days if an ADU is rented.
ADUs cannot be sold separately from the primary dwelling units.

Utility connections:

Connection and utility fees shall be reasonable, and shall not be disproportionately higher than those to develop primary dwellings, so as not to deter the development of ADUs. If a private sewage disposal system is used, such as a septic system, review and approval by a local health officer may be required. ~ State Standards

Allowed Zones:

*** Beginning in 2020, according to state law, all residential zoning districts, including single-family and multi-family, are allowed to build Accessory Dwelling Units. ***

Attached is a copy of a handout showing the requirements for an ADU for residential zones. The list of the zoning district shown above has commercial, mixed use, and open space which we do not allow ADU’s.

Residential Building Code:

The California Building Code (CBC) 2019 is adopted.

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