[Litmus2336]

https://www.google.com/url?sa=t&source=web&rct=j&url=https:/...

I believe you might be thinking of month-to-month, which is not a traditional lease. On all fixed term leases over a month rent cannot be changed during the term of the lease.

[phil248]

Which is an oddly elaborate way of saying that rent increases in California can happen annually.

[Litmus2336]

Technically, you can have a lease of any length. I've seen 3 and 6 month leases. I'm sure it's possible to have a 24+ month lease.