No, Your City Can't Make You Live There: The ADU Rule That's Been Illegal Since 2024

You want to build an ADU in the backyard and rent it out. Maybe you don't even live in the main house — it's a rental too, or it's your parents', or you're planning to move. Then you read your city's ADU code and hit the wall: the property owner must occupy one of the units.

Here's the thing: for a standard ADU, that requirement hasn't been legal since January 1, 2024.

Where the rule comes from

For years, cities were allowed to require owner-occupancy on ADUs, and a lot of ordinances still carry that language. But AB 976 (2023) made the prohibition permanent. As HCD put it, reviewing the City of Los Angeles's ADU ordinance:

"…the passage of Assembly Bill 976 will prevent jurisdictions from imposing owner-occupancy requirements on ADUs as of January 1, 2024."

So a blanket "the owner has to live here" condition on a standard ADU is no longer something a city can hold over your permit.

The one place it still applies: JADUs

There's a real exception, and it's worth being precise about, because it's where the confusion lives. A JADU — a junior ADU, carved out of the walls of an existing house, up to 500 square feet — does still require owner-occupancy. That's Government Code § 66333(b), and HCD says so plainly in the same breath:

"…JADUs require owner occupancy pursuant to Government Code section 66333, subdivision (b)."

ADU: no owner-occupancy requirement. JADU: owner-occupancy still required. If your city's code blurs the two — applies the JADU rule to a full ADU — that's the error HCD keeps flagging.

Verified against HCD's ADU findings letter to the City of Los Angeles (November 19, 2024), quoting Gov. Code §§ 66333(b) and AB 976.

There's one narrow carve-out on the other side, too: an ADU sold at an affordable-housing cost to a qualified buyer can carry an owner-occupancy condition (Gov. Code § 66341, subd. (c)(3)). That's a specific affordable-ownership program — not a hook for a general requirement.

This isn't one city's mistake

HCD has flagged the same owner-occupancy language in ADU ordinances up and down the state — it's the most-repeated illegal ADU rule in its enforcement letters. And when a city refuses to fix it, the consequence is built into the statute itself. Reviewing Dana Point's ordinance, HCD pointed to the self-executing rule:

"…that ordinance shall be null and void and that agency shall thereafter apply the standards established in this article for the approval of accessory dwelling units…"

Read that again: if a city's ADU ordinance doesn't comply with state law, the state says the ordinance is void — and the city has to apply the state standards instead. So even when the illegal line is still sitting in your city's printed code, it may not be enforceable against your project at all.

What to do with it

If your ADU permit is getting held up over an owner-occupancy condition, that's the moment to check which unit type you're actually building and what the state law says today. This isn't legal advice, and HCD's letters are its enforcement position rather than a court ruling — so confirm with your building department or counsel before you rely on it. But the baseline is statewide and it's been settled since the start of 2024.

What CrossBeam does with it

When the letter lands on your desk, CrossBeam turns it around the same day: what each item is actually asking, the code or law behind it, and a written response you can hand to your team or your attorney — the back-and-forth that used to eat weeks, done in a couple of hours.