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Lot splits under SB 9 in Dublin

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

What Dublin's code says

Dublin code What Dublin's code adds
How the lot may be divided
  • Each new parcel must be at least 40% of the original lot area.
    § 9.54.060 · code text
    Parcels shall not be smaller than forty percent (40%) of the lot area of the original parcel.
Minimum new lot size
  • At least 1,200 square feet.
    Applies: Minimum net area of each new parcel.
    § 9.54.060 · code text
    Each parcel shall have a minimum net area of one thousand two hundred (1,200) square feet.
Setbacks
  • At least 4 feet.
    Applies: Applies to interior side and rear yards.
    § 8.81.060 · code text
    The minimum interior side and rear yard setback shall be four feet.
  • At least 10 feet.
    Applies: Applies to the street side yard.
    § 8.81.060 · code text
    The minimum street side yard setback shall be 10 feet.
Standards
  • At most 2 units per parcel; standards must not prevent 2 units of at least 800 square feet each.
    § 8.81.060 · code text
    The objective standards set forth in this section shall not physically preclude a maximum of two units, comprising any combination of SB 9 Units and Primary Dwelling Unit, per parcel and shall not physically preclude each of those units from being at least 800 square feet in area.
  • No more than 16 feet high.
    Applies: Applies to an SB 9 unit, or any part of it, within the zoning district's setbacks.
    § 8.81.060 · code text
    The maximum height of an SB 9 Unit, or any portion thereof, located within the setbacks established for the zoning district where the lot is located shall not exceed 16 feet.
  • At least 15 feet of separation.
    Applies: Between a proposed upper story and an existing building on a neighboring property.
    § 8.81.060 · code text
    A minimum separation of 15 feet shall be provided between a proposed upper story and an existing single-story or multi-story structure on an adjacent property.
  • Each new parcel must be at least 30 feet wide.
    § 9.54.060 · code text
    Parcels shall have a minimum width of thirty (30) feet.
  • Each new parcel must be at least 40 feet deep.
    § 9.54.060 · code text
    Parcels shall have a minimum depth of forty (40) feet.
  • No more than 2 parcels.
    Applies: Applies to an urban lot split.
    § 9.54.060 · code text
    An urban lot split shall result in no more than two (2) parcels.
Owner occupancy
  • Applicant signs affidavit to live in the primary or SB 9 unit as principal residence for at least 3 years.
    Applies: Counted from approval; does not apply to a community land trust or qualified nonprofit corporation.
    § 9.54.060 · code text
    applicant intends to occupy the primary dwelling unit or an SB 9 unit as their principal residence for a minimum of three (3) years from the date of the approval of the subdivision.
Parking
  • At least 1 off-street parking space per unit.
    Applies: Not required within 1/2 mile walk of a high-quality transit corridor or major transit stop, or within 1 block of a car-share vehicle.
    § 8.81.060 · code text
    A minimum of one off-street parking space shall be provided per unit, except if the parcel is located within:

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

Can I split my lot under SB 9 in Dublin?

Dublin's code: At least 1,200 square feet. (Minimum net area of each new parcel.) (§ 9.54.060); Applicant signs affidavit to live in the primary or SB 9 unit as principal residence for at least 3 years. (Counted from approval; does not apply to a community land trust or qualified nonprofit corporation.) (§ 9.54.060).

General information, not legal advice.

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