Arvin Required a Discretionary Permit for a JADU. HCD Says No.

You're converting a bedroom — or the attached garage — into a junior ADU so a parent or a tenant has somewhere to live. In Arvin, the ordinance handed you an Administrative Permit: an application, fees, and a review where a city official decides whether your unit is "harmonious" with the neighborhood. That's a discretionary approval. It can be conditioned, delayed, or denied on judgment.

Here's the thing: for an ADU or a JADU, State ADU Law doesn't allow that kind of review at all.

What Arvin's ordinance required

Arvin's ADU Ordinance No. 2023-486, adopted October 24, 2023, built its whole approval around an Administrative Permit. On junior ADUs it was blunt:

"An administrative permit shall be required for the creation of a JADU."

And the findings a city has to make to grant that permit include one that is pure judgment. Under the Arvin Municipal Code, an Administrative Permit requires a finding "That the proposed use will be harmonious with existing structures and uses of land in the vicinity." Whether your JADU is "harmonious" is exactly the kind of call an official makes at a hearing — the opposite of an over-the-counter approval.

Why HCD says that doesn't hold

State ADU Law — recently renumbered to Government Code sections 66313 through 66342 — makes ADU and JADU approval ministerial. HCD quoted the statute directly:

"A permit application for an accessory dwelling unit or a junior accessory dwelling unit shall be considered and approved ministerially without discretionary review or a hearing…"

Ministerial approval can rest only on objective standards — standards, in the statute's words, "that involve no personal or subjective judgment by a public official." A "harmonious with the neighborhood" finding is subjective judgment by definition. So HCD's conclusion was flat:

"The Administrative Permit process is not ministerial, it is discretionary."

Because Arvin's own ordinance also promised ministerial review, HCD found the code contradicts itself — and told the City it must delete the requirement for an Administrative Permit and associated fees for ADUs and for JADUs.

Verified against HCD's ADU Ordinance Findings Letter to the City of Arvin (September 23, 2024), reviewing Ordinance No. 2023-486 under Gov. Code §§ 66313–66342.

The permit was one of 21

The discretionary-permit problem headlined the letter, but HCD found the ordinance noncompliant in 21 separate respects. A few that touch real projects:

• Corner-lot setbacks. Arvin required a six-foot side and rear setback on corner lots; HCD found State ADU Law doesn't allow a side or rear setback greater than four feet for a new ADU inland of the Coastal Zone.
• A missing protection. Arvin's code left out the rule that a city cannot force you to fix a violation on the main house as a condition of approving your ADU or JADU — "provided that correcting the violation is not necessary to protect health and safety."
• "Act on" vs. "approve or deny." The ordinance let the City "act on" an application; HCD found the statute requires an actual approve-or-deny decision on the clock, plus a full written list of fixes if the application is denied.

What this means if you're building in Arvin

An HCD findings letter is HCD's enforcement position, not a court ruling — courts are the final word, and only a few consequences self-execute. But the position is specific and the statute behind it is plain: a JADU or ADU is a ministerial, over-the-counter approval, and a discretionary "harmonious use" permit isn't a lawful gate for it. If Arvin — or any city — routes your JADU through a discretionary permit with subjective findings, that's the moment to ask which standards are actually being applied. Confirm the current rule with your building department or your attorney before you rely on it; this isn't legal advice.

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.