ADU rules in West Hollywood
The key facts first, then what we've learned building there.
The snapshot
Checked October 2026. We re-check every lot against the current code.
West Hollywood
| Rule | Answer |
|---|---|
| Detached ADU size | Up to 1,200 sq ft |
| Setbacks | 4 ft side and rear |
| Height | 16 ft; 18 ft near transit; 25 ft attached |
| Selling an ADU separately | Allowed: West Hollywood opted in to AB 1033 in February 2025 |
| Legalizing an existing unit | The city runs its own ADU Legalization Program |
| Seismic retrofit | The city has its own retrofit program for older buildings |
| SB 1211 apartment ADUs | Yes |
| Building department | West Hollywood Building & Safety |
What's different here
West Hollywood was among the first cities to opt in to AB 1033, so an ADU can be sold separately as a condo, with conditions.
The city's own legalization program gives older unpermitted units a path to become legal homes. We inspect and draw what's needed.
Many lots are apartment buildings, where SB 1211 ADUs and the city's seismic program often go together.
What applies here
Turn an older unpermitted unit into a legal, rentable home.
Learn moreSince January 2025, California lets an existing apartment property add detached ADUs, one for every existing unit up to eight, plus conversions of garages and storage.
Learn moreCities must now keep a set of pre-approved ADU plans.
Learn moreSB 9 lets a single-family lot be split in two, with up to two homes on each.
Learn morePlans that fit
Ready-drawn plans we adapt to your lot and your city.
Ask about your address
We check the lot against these rules and tell you what fits.