How to raise rent on a tenant

Updated 2026-09-04, 7 min read

Engraving of a folded letter half out of its envelope beside a brass letter opener — The letter is the last step, not the first.

10% ceiling

CACalifornia's hard cap on a covered unit's annual increase, or 5% plus the local cost-of-living change, whichever is lower — Civ. Code § 1947.12, checked 2026-09-04.

Raising rent is an operations problem with a legal wrapper. Get the number right, open the conversation early, and the notice becomes a formality rather than an event.

Setting a number you can defend

01Pull three genuinely comparable current listings — same bed count, same block, same condition.
02Adjust for what yours lacks: no parking, a walk-up, an older kitchen.
03Check the cap where one applies — 5% plus CPI, max 10%, in California (§ 1947.12, checked 2026-09-04).
04Price the downside in the turnover cost calculator.
05Choose the number you would still send if they said yes immediately.

The market is what re-lets, not what is listed

Listings show asking prices, including the ones that have sat for six weeks. If you can see days-on-market, weight the ones that went quickly.

Engraved handshake over a garden gate — The conversation at the gate comes first; the written notice follows it.

The conversation before the letter

A tenant who hears the number in a friendly message, with a reason and an alternative, mostly accepts it. A tenant who finds it in an envelope mostly starts looking. The message is three sentences: costs went up, here is the new number from a date, here is a longer term at a smaller number if you prefer.

Say what changed — tax, insurance, the block.
Offer a choice between term and rate.
Give a reply-by date.
Do not negotiate against yourself before they answer.

The letter

Then send it properly: old rent, new rent, effective date, notice period, everything else unchanged. The rent increase letter template fills it in and prints. Serve it the way the lease says notices are served and keep proof.

Engraved terrace of brick apartment houses with iron railings — A defensible number is built from doors on the same block, not from a national average.

When not to raise

When the tenant has just made a repair complaint — retaliation presumptions are unforgiving.
When you are inside a fixed term.
When the unit needs work you have not done; the raise invites the complaint.
When the raise is smaller than the turnover it risks — which is most raises under 3% on a good tenant.

The last one is arithmetic, not sentiment: run it, and let the turnover cost calculator answer.

Sources read for this page

Cal. Civ. Code § 1947.12checked 2026-09-04