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The SB 9 city guide
St Helena
The SB 9 city guide
St Helena
unincorporated
C
Grade
very friendly
very friendly
friendly
friendly
restrictive
very restrictive
We've given St Helena a C for its restrictive approach to the implementation of SB 9, which includes many regulations.
SB 9 is a state bill that was created to address California's housing crisis. It allows Californians more flexibility with their urban property than they've ever had before.
Last updated:
5/5/2022
If you feel this grade was given incorrectly or it is outdated, please contact us
SB 9 is a state bill that was created to address California's housing crisis. It allows Californians more flexibility with their urban property than they've ever had before. Read more about SB 9 here.
What can I build?
You have three options for an SB 9 project
Option 1: Lot Split
Divide your lot into two parcels; building on the new lot is allowed
Your lot must be at least 2,400 sqft and can be divided 50/50 or 60/40
sb 9 standard


Option 2: Two-Units
Keep your parcel as is, and add
up to 2 units total
sb 9 standard
friendly
very friendly
restrictive
very restrictive


Option 3: Lot Split & Two-Units
A mix of the above: divide your parcel, and add
up to 4 units total
sb 9 standard
friendly
very friendly
restrictive
very restrictive


Building max. size
In
St Helena
, new units can be up to
sq ft. This is half the size of the median single family home in California.
very Restrictive
📐
California median home size
1,700 sq ft
📐
St Helena
SB 9 Limit
sq ft
Where can I build?
You can build in single-family residential zones
,
sb 9 standard
friendly
very friendly
restrictive
very restrictive
Places where you can’t build
May require additional permits
Buildings that can't be demolished
Renting & Selling
For all development options, resulting units must be residential use only
sb 9 standard
Renting
Requirements
Requirements
Selling Requirements
Additional Requirements
Here are a few more restrictions and requirements that you should keep in mind when pursuing an SB 9 project in
St Helena
.
Want to learn more about Homestead’s grading system? Read our methodology.

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Here’s everything we did not cover
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Read our guidelines
Read our guidelines
City News
Other counties
Napa County
More about
St Helena
The residents of St. Helena love their Napa Valley suburb for its beautiful scenery, family-friendly small-town atmosphere, and charming local shops. Visitors enjoy sampling wines at Charles Krug (the oldest wine-tasting room in California), shopping in the town’s Historic Downtown, and exploring nearby Bothe State Park. Like much of the North Bay, housing in St. Helena is very expensive. We think SB 9 can help by creating more affordable homes throughout Wine Country and beyond.
Check eligibility
Enter your address in California, and find out if your property is eligible for SB 9
