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The Arroyo Register

Houses, hills and paperwork along the Arroyo.

the desk answers one slip at a time

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The Permits

ADUs, HPOZ, Mills Act and what the city lets you build

4 slips · latest filed 10/06/2026

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The Mills Act and what it changes

A reader inside the Highland Park-Garvanza HPOZ asks what a Mills Act contract actually buys an owner: the income-approach tax bill, the ten-year term, and what it binds the next owner to.

5 min

What an ADU can be on an R1 lot

A reader asks whether a backyard cottage fits an R1 lot in Northeast Los Angeles: sizes, setbacks, the HPOZ question, and the permits in order.

6 min

The Highland Park Garvanza HPOZ

A reader asks what changes when a house sits inside the Highland Park-Garvanza HPOZ: the slip reads the zone, its board and its rules for a buyer.

5 min

Reading a ZIMAS report

A reader's slip on the ZIMAS parcel report: which lines state what a lot already is, its zoning, overlays and permits, and where the record stays quiet.

6 min