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Alameda County · Renting & eviction

Rent increases in Alameda County

County rule: in unincorporated areas, mobilehome park space rent may rise no more than 4% a year; a hearing officer may allow more.

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Key points

  • Mobilehome spaces: County rule: in unincorporated areas, mobilehome park space rent may rise no more than 4% a year; a hearing officer may allow more.

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

What Alameda County's code says

Alameda County code What Alameda County's code adds
Annual increase limit
  • No more than 4% a year.
    Applies: Mobilehome park space rent only; a park owner may ask a hearing officer for a larger increase; vacancy increases follow separate rules.
    § 3.32.050 · code text
    The annual space rent shall not be increased by more than four percent.
Units covered
  • Mobilehome spaces.
    § 3.32.050 · code text
    The annual space rent shall not be increased by more than four percent.
How often rent can go up
  • No more than 1 nonstandard adjustment request in the 12 months after the last space rent increase took effect.
    Applies: Mobilehome park spaces only; park owner requests for more than the standard increase.
    § 3.32.060 · code text
    However, no park owner may request more than one adjustment to space rents during the twelve (12) month period following the first full day the last space rent increase is put into effect.
Petitions and pass-throughs
  • A park owner may request more than the standard increase; the hearing officer may approve, deny, modify or cap it.
    Applies: Mobilehome park spaces only; proof by clear and convincing evidence; capital-improvement parts stay out of base rent, charged only during useful life.
    § 3.32.060 · code text
    A park owner may request an adjustment in excess of the space rent increase authorized by Section 3.32.050 by conforming to the procedures set forth in this section, and any further procedures as established in the rent review procedures.

Also in Alameda County's code: Mobilehome Park Rent Review Procedures (Ch. 3.32) — mobilehome park spaces only. This page does not summarize it yet.

The California rule underneath

CA state law Underneath, California law still applies. Rent cap right now: 8.8% for increases taking effect August 1, 2026 through July 31, 2027 (5% plus 3.8% inflation) (Civ. Code § 1947.12(a)(1), (g)). California's statewide rent cap — the full state rule →

Who this affects

TenantsLandlordsProperty managers

Frequently asked questions

How much can rent go up in Alameda County?

County rule: in unincorporated areas, mobilehome park space rent may rise no more than 4% a year; a hearing officer may allow more.

General information, not legal advice.

Ask about a specific Alameda County property

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California's statewide rent cap

Alameda County Municipal Code — full text