Agoura Hills · Building on your lot

Lot splits under SB 9 in Agoura Hills

Agoura Hills's own rules on lot splits under sb 9, with the code text for every value, and the state law underneath.

Ask about lot splits under sb 9 in Agoura Hills See coverage

Each rule below links to the section of the Agoura Hills Municipal Code it was read from, with the code text one click away (checked October 2026). General information, not legal advice.

What Agoura Hills's code says

Agoura Hills code What Agoura Hills's code adds
How the lot may be divided	Each new parcel must be at least 40% of the original lot area. Applies: Applies to an urban lot split. § 10900.403 · code text Neither parcel shall be smaller than forty (40) percent of the lot area of the original parcel proposed for subdivision.
Minimum new lot size	Each new parcel must be at least 1,200 square feet. § 10900.403 · code text Both newly created parcels shall be no smaller than one thousand two hundred (1,200) square feet.
Setbacks	At least 4 feet from the side and rear lot lines. Applies: Urban lot split. No setback for an existing structure or one rebuilt in the same location and dimensions. § 10900.403 · code text In all other circumstances, a setback of four (4) feet is required from the side and rear lot lines. No minimum setbacks. Applies: Applies to an existing structure, or one built in the same location and dimensions as an existing structure, in an urban lot split. § 10900.403 · code text No minimum setbacks are required for an existing structure, or a structure constructed in the same location and to the same dimensions as an existing structure.
Standards	No more than 2 units per lot. Applies: Applies to a lot created by an urban lot split. The 2 units include ADUs and junior ADUs. § 10900.403 · code text A maximum of two (2) units may be located on a lot created through an urban lot split, inclusive of accessory dwelling units and junior accessory dwelling units. No minimum lot width or depth. Applies: Applies when the new lot is smaller than the minimum lot allowed in the zoning district. § 10900.403 · code text Any lot created pursuant to an urban lot split is not subject to minimum lot width or depth requirements if the lot is smaller than the minimum allowable lot in the underlying zoning district. Standards are waived or reduced only as needed to allow each of 2 units up to 800 square feet. Applies: Applies to an urban lot split where a standard would physically prevent 2 units of at least 800 square feet. § 10900.403 · code text If the application of an objective standards would have the effect of physically precluding either or both units from being at least eight hundred (800) square feet in floor area, such standard shall be waived or reduced only to the extent necessary to allow construction of the affected unit(s) to a size no greater than eight hundred (800) square feet in floor area. At most 8,000 square feet of residential floor area. Applies: Applies to SB 9 housing in the Old Agoura Overlay District, regardless of lot size. § 9293.9 · code text The maximum residential floor area shall be eight thousand (8,000) square feet, regardless of lot size. Plans must name 1 architectural style and show at least 5 of its features, including roof type and pitch. Applies: SB 9 housing applications. A new unit on a lot with an existing unit must use the existing unit's style. § 9293.12 · code text project plans shall identify an architectural design style and include at least five (5) of the following features consistent with the descriptions of the following elements of a single specific style, with roof type and characteristic pitch required to be at least one (1) of the five (5) features. No more than 4 colors. Applies: Applies to the entire building exterior, including trim and accent colors. § 9293.12 · code text The number of colors appearing on the entire building exterior shall be limited to a maximum of four (4) colors (or four (4) tones of the same color), including trim and accent colors.
Owner occupancy	The applicant signs an affidavit to live in 1 unit as principal residence for at least 3 years from approval. Applies: Urban lot split. Not required of a community land trust or qualified nonprofit corporation. § 10900.403 · code text The applicant for an urban lot split shall sign an affidavit stating that the applicant intends to occupy one (1) of the housing units as their principal residence for a minimum of three (3) years from the date of the approval of the urban lot split.
Parking	At least 1 off-street space per unit. Applies: Urban lot split. None within a 1/2-mile walk of a high-quality transit corridor or major transit stop, or 1 block of a car share vehicle. § 10900.403 · code text Off-street parking of at least one (1) space per unit shall be provided, except where:

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

Can I split my lot under SB 9 in Agoura Hills?

Agoura Hills's code: Each new parcel must be at least 40% of the original lot area. (Applies to an urban lot split.) (§ 10900.403); Each new parcel must be at least 1,200 square feet. (§ 10900.403).

General information, not legal advice.

Ask about a specific Agoura Hills property

Ask GoCodebook how Agoura Hills's lot splits under sb 9 rules apply to your situation and get an answer that cites the section.

Ask your question

More on building on your lot in Agoura Hills

All building on your lot rules in Agoura Hills

Tree removal in Agoura Hills

Swimming pools in Agoura Hills

Agoura Hills Municipal Code — full text