California ADU Owner Move-In: The AB 1482 Exemption Notice Decides Everything

The accessory dwelling unit (ADU) behind my client's house had a tenant of eighteen months, a month-to-month agreement, and an owner who finally wanted the space back for her son. The only paper that mattered was one we dug out of the lease file: the AB 1482 exemption notice. That single page changed the notice period, the relocation payment, and the odds of a smooth move-in.

AB 1482 is the state's rent and eviction law

AB 1482 is California's statewide tenant protection act. It does two things for most residential rentals. It caps annual rent increases at 5% plus the local consumer price index, never more than 10%. It also requires "just cause" to terminate a tenancy after the tenant has lived there 12 months. Just cause means either the tenant did something wrong (at-fault) or the landlord has an allowed no-fault reason. An owner moving themselves or a close family member into the unit is one of those no-fault reasons. But there's a catch for ADUs.

The law exempts many single-family homes and some ADUs from both the rent cap and the just-cause requirement. That exemption only works if the landlord is not a corporation or a real estate investment trust and the tenant got a written notice of the exemption before or at lease signing. I've seen that notice buried, missing, or never signed. When it's missing, the default is that AB 1482 applies. No notice, no exemption.

With a valid exemption, it's a simple 60-day notice

If the lease file contains a proper AB 1482 exemption notice, ending a month-to-month tenancy for an owner move-in is straightforward. I would serve a written 60-day notice of termination if the tenant has lived there a year or more. For a tenancy under a year, the required notice is 30 days. No relocation payment is required under state law in that scenario. I always sent these notices by certified mail and kept a copy with the receipt. The reason for the move-in doesn't need to be stated when the unit is exempt; the tenancy is simply ending under the normal periodic tenancy rules.

That said, local rent control can still apply in some California cities. Some cities have their own just-cause rules and relocation amounts even for single-family homes or ADUs. I checked the local housing department before relying on the state exemption.

Without the exemption, owner move-in triggers relocation pay

If the exemption wasn't properly disclosed, AB 1482 just-cause rules apply. An owner move-in is still a lawful no-fault reason to end the tenancy. But now the landlord has to state that reason in the notice and pay relocation assistance equal to one month of rent. The tenant can choose to have that amount credited against the final month's rent instead. If the landlord can't show proof of payment or offer, an unlawful detainer (eviction lawsuit) can fail.

I've seen landlords assume this only applies to big apartment buildings. It doesn't. ADUs are exactly the kind of rental where a missing exemption notice flips the whole process. The tenant in my client's case had no exemption notice in the file. She owed a month's rent in relocation assistance before serving the 60-day no-fault notice. That was cheaper than fighting an unlawful detainer, but it still stung.

Rent increases follow the same exemption logic

If the ADU is properly exempt and the notice was given, the state rent cap doesn't apply. I could raise the rent to market with proper written notice, usually 30 days for a rent increase under 10% or 60 days for larger increases in a month-to-month tenancy. If the unit isn't exempt, the rent increase is limited to 5% plus local CPI, with a hard ceiling of 10% per year. Some cities cap it further. I would not use a rent increase to force an owner move-in; that often backfires as retaliation or bad faith.

Before I serve anything, I confirm the paperwork

Here's what I actually do before any notice goes out. I start with the lease file: signed lease, addendum mentioning AB 1482, any single-family exemption. Then I call the city's housing division and ask if local just-cause or relocation rules apply to ADUs. I also have a landlord-tenant attorney review the specific lease and notice. I'm not a lawyer, and the cost of a one-hour review is nothing compared to losing an unlawful detainer case because the notice was defective.

The owner move-in is allowed. The question is what it costs. That answer sits in one piece of paper in the lease file.