Skip to content

Sonoma County · Renting & eviction

Eviction and just cause in Sonoma County

County rule: in covered units, unpaid rent above 1 month's rent is a just cause; after 2 in a calendar year, any default counts.

Key points

  • Just cause: County rule: in covered units, unpaid rent above 1 month's rent is a just cause; after 2 in a calendar year, any default counts.

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

What Sonoma County's code says

Sonoma County code What Sonoma County's code adds
Allowed at-fault reasons
  • default in payment of rent exceeding one month's rent
    Applies: Covered residential tenancies in unincorporated Sonoma County; protection invoked at most twice yearly; after two defaults above one month, any later default that calendar year qualifies
    § 4-256 · code text
    A default in the payment of rent shall be an "at-fault just cause" for termination pursuant to Civ. Code Section 1946.2 (b)(1) and this article only when the amount due and owing as the basis of the default exceeds one month's rent for the rental unit.
  • any subsequent default in payment of rent
    Applies: Covered residential tenancies in unincorporated Sonoma County; after two defaults above one month rent in the same calendar year
    § 4-256 · code text
    If a default in the payment of rent of an amount greater than one months' rent occurs two times in a calendar year, any subsequent default in such calendar year shall be an "at-fault just cause" for termination pursuant to Civ. Code Section 1946.2 (b)(1) and this article.
Units covered
  • Residential rental units in unincorporated Sonoma County, except Act-exempt units unless made nonexempt; qualifying restricted affordable housing included
    Applies: State/federal law, regulations and contract restrictions preserved; emergency protections may apply more broadly
    § 4-254 · code text
    Applicability of this article. This article applies to all residential rental units in the unincorporated areas of Sonoma County except for those units that are exempted by the Act and not expressly made non-exempt by this Section 4-254(b) hereof. It shall further apply more broadly where enumerated in Section 4-258. (b) Limitation on exemptions from the Act. Within the unincorporated areas of Sonoma County, the following rental units, exempted from the just cause protections of the Act by Civil Code Section 1946.2(e) are hereby made non-exempt, except where the application of this article to a rental unit would violate law, regulation, or contractual requirements of the federal government or the state of California applicable to such rental unit: Housing restricted by deed, regulatory restriction contained in an agreement with a government agency, or other recorded document as affordable housing for persons and families of very low, low, or moderate income, as defined in Section 50093 of the Health and Safety Code, or subject to an agreement that provides housing subsidies for affordable housing for persons and families of very low, low, or moderate income, as defined in Section 50093 of the Health and Safety Code or comparable federal statutes.

The California rule underneath

CA state law Underneath, California law still applies. Just cause required: After 12 months of lawful occupancy, the owner may terminate only for a just cause stated in the notice (Civ. Code § 1946.2(a)). Just-cause eviction in California — the full state rule →

Who this affects

TenantsLandlordsProperty managers

Frequently asked questions

Does a landlord in Sonoma County need a reason to evict?

County rule: in covered units, unpaid rent above 1 month's rent is a just cause; after 2 in a calendar year, any default counts.

General information, not legal advice.

Ask about a specific Sonoma County property

Ask GoCodebook how Sonoma County's eviction and just cause rules apply to your situation and get an answer that cites the section.

Ask your question

More on renting & eviction in Sonoma County