Campbell · Building on your lot

Lot splits under SB 9 in Campbell

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

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

What Campbell's code says

Campbell code What Campbell's code adds
How the lot may be divided	New lots must be about equal in area; no lot can be smaller than 40% of the original lot. § 20.14.040 · code text Each new parcel shall be approximately equal in lot area provided that one parcel shall not be smaller than forty percent of the lot area of the original parcel proposed for subdivision.
Minimum new lot size	Each new lot must be at least 1,200 square feet. § 20.14.040 · code text In no event shall a new parcel be less than one thousand two hundred square feet in lot area.
Standards	Each new lot must be at least 25 feet wide. Applies: All new lots; for a flag lot, the access corridor is not counted in the width. § 20.14.040 · code text Each new parcel shall maintain a minimum lot width of twenty-five feet. At least 25 feet of frontage on a public street. Applies: Each new lot, except flag lots. § 20.14.040 · code text Each new parcel shall have frontage upon a street dedicated in fee as a public street with a minimum frontage dimension of twenty-five feet, except for flag-lots which shall have a minimum frontage dimension of twelve feet. At least 12 feet of frontage on a public street. Applies: Applies to flag lots. § 20.14.040 · code text Each new parcel shall have frontage upon a street dedicated in fee as a public street with a minimum frontage dimension of twenty-five feet, except for flag-lots which shall have a minimum frontage dimension of twelve feet. The access corridor must be at least 12 feet and at most 15 feet wide. Applies: Flag lot access corridor; owned as part of the lot (not an easement) and fully paved with concrete or pavers. § 20.14.040 · code text The access corridor of a flag lot parcel (as illustrated in Section 21.25.030, Figure 1-1 of the Zoning Code) shall be in fee as part of the parcel and not as an easement and shall be of a minimum width of twelve feet and a maximum width of fifteen feet and be entirely paved with either concrete or pavers, consistent with the Fire Code as determined by the fire chief. No more than 2 new lots. Applies: A parcel map that divides an existing lot. § 20.14.040 · code text The parcel map to subdivide an existing parcel shall create no more than two new parcels. Existing buildings on a lot being split do not have to meet setbacks. Applies: They cannot cross the new shared lot line unless converted to an attached townhome unit. § 20.14.050 · code text Existing structures located on a parcel subject to an urban lot split shall not be subject to a setback requirement. No more than 2 existing homes on each new lot. Applies: Each lot created by an urban lot split. § 20.14.050 · code text No parcel created through an urban lot split shall be allowed to include more than two existing dwelling units as defined by Government Code section 66411.7(j)(2). The split cannot require demolishing or altering more than 25% of the exterior structural walls. Applies: Rent-restricted or rent-controlled housing, or housing a tenant lived in during the last 3 years. § 20.14.050 · code text The proposed urban lot split shall not require the demolition or alteration involving removal of more than twenty-five percent of the existing exterior structural walls of any of the following types of housing:
Owner occupancy	Applicant signs a recorded affidavit to live on 1 new lot as their main home for at least 3 years. Applies: Applies to the applicant, unless it is a community land trust or qualified nonprofit corporation. § 20.14.050 · code text The applicant shall sign an affidavit provided by the community development director attesting that the applicant intends to occupy one of the newly created parcels as their principal residence for a minimum of three years from the date of the approval of the urban lot split (or issuance of a certificate of occupancy for a new dwelling in the case of a vacant lot).

Who this affects

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Frequently asked questions

Can I split my lot under SB 9 in Campbell?

Campbell's code: New lots must be about equal in area; no lot can be smaller than 40% of the original lot. (§ 20.14.040); Each new lot must be at least 1,200 square feet. (§ 20.14.040).

General information, not legal advice.

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