Can I split my lot under SB 9 in Thousand Oaks?

Thousand Oaks's code: 2 lots of about equal area; one lot may not be smaller than 40% of the original lot area. (§ 9-4.3706); A standard is waived only as far as needed to allow 2 units of up to 800 square feet each. (Applies to two-unit housing projects and urban lot splits.) (§ 9-4.3708).

Lot splits under SB 9 in Thousand Oaks: the local rules

Thousand Oaks code What Thousand Oaks's code adds
How the lot may be divided	2 lots of about equal area; one lot may not be smaller than 40% of the original lot area. § 9-4.3706 · code text The Urban Lot Split may divide a lot of record to create no more than two new lots of approximately equal lot area, provided that one lot shall not be smaller than 40 percent of the lot area of the original lot.
Standards	A standard is waived only as far as needed to allow 2 units of up to 800 square feet each. Applies: Applies to two-unit housing projects and urban lot splits. § 9-4.3708 · code text Two-Unit Housing Development created pursuant to this Article shall comply with the following standards and requirements so long as the application of such standards would not have the effect of physically precluding the construction of up to two units (each possessing no greater than 800 square feet of floor area) on a single lot. No more than 25 feet high and 2 stories. Applies: Two-unit projects, unless the lot has 2 side yards of at least 15 feet and a 20-foot rear yard. § 9-4.3708 · code text No structure containing a dwelling unit may exceed 25 feet in height and be more than two stories, except for those circumstances described in Sec. 9-4.3708(d)(2), below. No more than 35 feet high and 3 stories. Applies: Two-unit projects where the lot has 2 side yards of at least 15 feet each and a 20-foot rear yard. § 9-4.3708 · code text In no event shall such structures exceed three (3) stories or 35 feet. There is no minimum lot width. Applies: Applies to an urban lot split. § 9-4.3706 · code text An Urban Lot Split is not subject to minimum lot width requirements as set forth in this Title. Each lot needs usable outdoor space of at least 15% of the lot area. Applies: Common outdoor space for all residents of the property. § 9-4.3708 · code text Each lot must contain usable, outdoor space of no less than fifteen percent (15%) of the area of each lot and of a regular geometry (e.g., rectangular) intended for common use by all property occupants. At least 160 cubic feet of enclosed storage per unit, with one side at least 6 feet. Applies: Private storage in garages, carports or patio areas. § 9-4.3708 · code text Private storage area for each dwelling unit must be provided with a minimum of one hundred sixty (160) cubic feet of enclosed storage area, which must be provided in garages, carports or patio areas and in which one dimension must be at least six feet (6'). At least 5 feet deep and 6 feet wide. Applies: Applies to the roofed projection or recess at a new unit's entrance. § 9-4.3708 · code text Exterior entrances for new units must have a roofed projection or recess with a minimum depth of at least five feet (5') and a minimum horizontal width of six feet (6'). No more than 4 units, including ADUs and JADUs. Applies: Applies to a lot not subject to an urban lot split. § 9-4.3708 · code text No more than four units shall be allowed on a lot not subject to an Urban Lot Split, inclusive of ADUs and JADUs. No more than 2 units, including ADUs and JADUs. Applies: Applies to a lot created by an urban lot split. § 9-4.3708 · code text A maximum of two (2) units will be allowed on each lot created by an Urban Lot Split or the provisions set forth in California Government Code Section 66411.7, inclusive of ADUs and JADUs.
Minimum new lot size	Each new lot must be at least 1,200 square feet of gross area. § 9-4.3706 · code text The gross lot area of each newly created lot shall be no smaller than 1,200 square feet.
Setbacks	Side and rear setbacks are 4 feet. Applies: Two-unit projects; none for existing or same-size rebuilt structures; buildings using the extra 10 feet of height need 15-foot sides, 20-foot rear. § 9-4.3708 · code text Except for those circumstances described in Section Sec. 9-4.3708(d)(2), above, the setback for side and rear lot lines shall be four (4) feet. The front setback is 4 feet. Applies: Applies to new flag lots created under the SB 9 rules. § 9-4.3708 · code text For new flag lots, as defined in Section 9-3.206, created pursuant to this article, the front yard setback shall be four (4) feet. Side yards of at least 15 feet each and a 20-foot rear yard. Applies: Required to raise building height by no more than 10 feet. § 9-4.3708 · code text The maximum height of a structure containing a dwelling unit may be increased by not more than ten (10') feet provided that the property has two (2) side yards of not less than fifteen (15') feet each and a rear yard of 20 feet.
Owner occupancy	The owner must live on one lot as their main home for at least 3 years. Applies: Applies to an urban lot split; counted from final map approval. § 9-4.3706 · code text An owner must occupy one lot as their primary residence for a minimum of three (3) years from the date of approval of the final map for the Urban Lot Split.

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