Skip to content

Sausalito · Building on your lot

Lot splits under SB 9 in Sausalito

Sausalito's own rules on lot splits under SB 9, with the code text for every value.

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

What Sausalito's code says

Sausalito code What Sausalito's code adds
How the lot may be divided
  • Each new parcel must be at least 40% of the original parcel's lot area.
    Applies: Applies to an urban lot split in the R-1-20, R-1-6 or R-1-8 zones.
    § 9.70.020 · code text
    Is at least 40 percent of the lot area of the original parcel;
Unit size
  • No more than 1,200 square feet of floor area.
    Applies: Applies to new dwelling units built on a lot created under this chapter.
    § 9.70.040 · code text
    New dwelling units constructed under this chapter shall be no more than 1,200 square feet in floor area.
Minimum new lot size
  • Each new parcel must be at least 1,200 square feet.
    Applies: Applies to each newly created parcel.
    § 9.70.020 · code text
    Is at least 1,200 square feet in size;
Standards
  • At least 20 feet of street frontage.
    Applies: Applies to all lots created under this chapter, except new flag lots.
    § 9.70.030 · code text
    Except as set forth in subsection B of this section, all lots created under this chapter must have no less than 20 feet of street frontage.
  • At least 10 feet of street frontage.
    Applies: Applies to a new flag lot when the remaining lot has at least 20 feet of frontage.
    § 9.70.030 · code text
    New flag lots are permitted, but the new flag lot parcel must have at least 10 feet of street frontage, so long as the remaining lot has a frontage of at least 20 feet.
  • No more than 2 dwelling units.
    Applies: Applies to each parcel created under this chapter.
    § 9.70.040 · code text
    no more than two dwelling units shall be permitted on any parcel created under the provisions of this chapter.
  • These standards are waived if they would prevent 2 units or make either unit smaller than 800 square feet.
    Applies: Applies to urban lot split objective standards.
    § 9.70.030 · code text
    or would necessarily result in a unit size of less than 800 square feet for either unit:
Owner occupancy
  • At least 3 years.
    Applies: The owner intends to live in 1 unit as principal residence, counted from the lot split approval.
    § 9.70.020 · code text
    The owner of the parcel intends to occupy one of the housing units as their principal residence for a minimum of three years from the date of the approval of the urban lot split.
  • Owner occupancy is not required.
    Applies: Applies when the owner is a community land trust or qualified nonprofit corporation under state tax law.
    § 9.70.020 · code text
    Owner-occupancy is not required if the owner is a community land trust or qualified nonprofit corporation under Section 214.15 or 402.1 of the Revenue and Taxation Code.
Parking
  • At least 1 off-street parking space.
    Applies: Each parcel, except within a 1/2-mile walk of a high-quality transit corridor or major transit stop, or 1 block of a car share vehicle.
    § 9.70.030 · code text
    A minimum of one off-street parking space shall be provided on each parcel except no parking shall be required where the parcel meets one or both of the following instances:

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

Can I split my lot under SB 9 in Sausalito?

Sausalito's code: Each new parcel must be at least 1,200 square feet. (Applies to each newly created parcel.) (§ 9.70.020); At least 3 years. (The owner intends to live in 1 unit as principal residence, counted from the lot split approval.) (§ 9.70.020).

General information, not legal advice.

Ask about a specific Sausalito property

Ask GoCodebook how Sausalito'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 Sausalito