St. Helena planning commission backs changes to visibility-triangle rules; sends ordinance to city council

ST. HELENA, Calif. — The St. Helena Planning Commission voted 3-0 on Sept. 2 to recommend that the City Council approve amendments to Title 17 of the St. Helena Municipal Code that would shorten visibility-triangle measurements from 35 feet to 25 feet and raise the maximum height for vegetation, walls and fences inside the triangle to 42 inches, and to find the change exempt under the California Environmental Quality Act (CEQA) Guidelines §15061(b)(3).

The commission’s recommendation follows a staff report and presentation from Community Development Director Maya de Rosa, who said the changes respond to a conflict between the municipal code and the city’s public works standard and to field observations by the fire inspector. “Our current zoning code does codify how we are to uphold standards for measuring vision triangles,” de Rosa said during the meeting, and she told commissioners that a review of roughly 300 street corners found 66 that were out of compliance under the existing 35-foot standard.

Why it matters: visibility-triangle rules affect sightlines at intersections and driveways and can require property owners to trim hedges, lower fences or otherwise alter boundary features. Several attendees raised concerns about how changes would affect historic…