Skip to content

Hawthorne · Building on your lot

Lot splits under SB 9 in Hawthorne

Hawthorne'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 Hawthorne Municipal Code it was read from, with the code text one click away (checked October 2026). General information, not legal advice.

What Hawthorne's code says

Hawthorne code What Hawthorne's code adds
How the lot may be divided
  • Each new lot must be at least 40% of the original lot area.
    § 16.64.030 · code text
    provided that one lot shall not be smaller than 40 percent of the lot area of the original lot proposed for subdivision.
Minimum new lot size
  • Each new lot must be at least 1,200 square feet.
    § 16.64.030 · code text
    Both newly created lots must each be no smaller than 1,200 square feet.
Standards
  • No more than 2 new lots of about equal area.
    Applies: Urban lot split parcel map.
    § 16.64.030 · code text
    The parcel map for an urban lot split must subdivide an existing lot 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 proposed for subdivision.
  • Each new lot must provide access to the public right-of-way.
    Applies: Resulting lots.
    § 16.64.030 · code text
    Each resulting lot must provide access to the public right-of-way.
  • No more than 1 curb cut.
    Applies: Urban lot splits; a flag or rear lot must share the other lot's curb cut and driveway.
    § 16.64.030 · code text
    The curb cut and driveway may be relocated if necessary, but under no circumstances may an urban lot split result in more than one curb cut.
  • A shared access easement may be no wider than 10 feet.
    § 16.64.030 · code text
    A reciprocal access easement for an urban lot split may not exceed 10 feet in width.
  • No right-of-way dedication or off-site improvements are required solely for an urban lot split.
    Applies: Urban lot split.
    § 16.64.030 · code text
    Notwithstanding the foregoing, no dedication of rights-of-way or construction of off-site improvements is required solely for an urban lot split.
Owner occupancy
  • Applicant signs affidavit to live in one unit as principal residence for at least 3 years after final map approval.
    § 16.64.030 · code text
    The applicant for a parcel map for an urban lot split must sign an affidavit provided by the city stating that the applicant intends to occupy one of the dwelling units on one of the resulting lots as the applicant's principal residence for a minimum of three years after the final parcel map for the urban lot split is approved.

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

Can I split my lot under SB 9 in Hawthorne?

Hawthorne's code: Each new lot must be at least 1,200 square feet. (§ 16.64.030); Applicant signs affidavit to live in one unit as principal residence for at least 3 years after final map approval. (§ 16.64.030).

General information, not legal advice.

Ask about a specific Hawthorne property

Ask GoCodebook how Hawthorne'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 Hawthorne