Berkeley Hillside Overlay imposes stricter setbacks, heights, grading, and fire-safety standards in the Berkeley Hills, the area devastated by the 1991 Tunnel Fire that killed 25 people and destroyed 3,000 homes.
BMC Chapter 23 establishes the Hillside Environmental Safety Overlay District covering steep slopes east of Grizzly Peak Boulevard. Standards include reduced lot coverage, stricter setbacks, retaining-wall limits, and grading restrictions to manage landslide and wildfire risk. The overlay was strengthened after the 1991 East Bay Hills Tunnel Fire (Oakland Hills firestorm) that killed 25 people and destroyed nearly 3,000 dwellings, including hundreds in Berkeley. Defensible space, ember-resistant vents, and Class A roofing are required. Most hillside projects require a use permit and design review, and fire-department approval is required for driveway access.
Hillside-overlay violations can result in stop work orders, redesign requirements, denial of certificates of occupancy, and fines under BMC Title 23 starting around $500 per offense.
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