SB9 in St Helena

St Helena receives a grade of D, indicating a city with virtually no SB9 activity and a restrictive development environment. For investors, this means little to no opportunity for SB9-driven housing expansion or redevelopment in the near term. The city’s policies and local culture strongly limit the potential for small-lot, duplex, or lot-split projects under SB9.

St Helena’s ordinance reflects the city’s small size and its location in Napa Valley, an area known for restrictive development policies. The ordinance imposes significant constraints on SB9 projects, including strict setbacks, minimum lot sizes that limit lot splits, and design standards that discourage duplex construction. Parking requirements remain standard to above standard, adding cost and complexity. Overall, the ordinance is restrictive and discourages SB9 uptake rather than facilitating it.

From 2022 through 2025, St Helena recorded zero SB9 applications and zero approvals. This flat trajectory reflects a development culture resistant to SB9 implementation. The city’s small scale and its emphasis on preserving Napa Valley’s character have kept SB9 projects from gaining any traction. There were no changes or shifts in policy or enforcement during this period that would encourage SB9 activity. St Helena is not a charter city, so there is no litigation affecting SB9 compliance or enforcement. The lack of applications suggests either a lack of developer interest or a perception that SB9 projects would be unlikely to succeed under local rules.

There is no record of any HCD enforcement action against St Helena related to SB9 compliance. The city has not been subject to letters or lawsuits from the state housing department.

Investors should avoid pursuing SB9 projects in St Helena at this time. The city’s restrictive ordinance and zero application history indicate that SB9 is not a viable pathway for housing development here. Without changes to local policy or enforcement pressure, the market will remain closed to SB9-driven investment. Investors looking for SB9 opportunities should consider other Napa Valley cities or regions with more supportive frameworks. For the grading methodology, see the SB9 City Guide post.