Sonoma City adopts state-recommended fire hazard severity zones; council orders safety work ahead of general plan update

The Sonoma City Council on April 20 adopted an ordinance formally designating fire hazard severity zones for the city as recommended by the California Department of Forestry and Fire Protection (Cal Fire), a move that will trigger new building-material and defensible-space requirements for properties in high and very-high hazard areas.

The ordinance, introduced and adopted at the public hearing, follows state guidance and a map Cal Fire provided in February. It requires the city to implement Chapter 7A of the California Building Code for properties in high and very-high zones and to apply defensible-space rules and hazard-disclosure requirements in very-high areas. The council voted unanimously to introduce and adopt the ordinance.

City staff said the updated map assigns a single severity rating to each parcel (choosing the higher rating where a parcel crossed more than one zone) to simplify permitting and compliance. Jennifer Gates, Sonoma's community development director, told the council the map was overlaid on city parcel data so property owners and permit applicants can see a single, parcel-level rating in the online permitting system.

"As required by Government Code Section 51179, local jurisdictions must adopt updated fire hazard severity zones within 120 days of Cal Fire's recommendation," Gates said. She described next steps that include updating the city's safety element, and identifying evacuation routes and assembly locations for Cal Fire review.

Trevor Smith, Sonoma Valley Fire District fire marshal, explained what the new classifications mean for residents and buyers. He said the changes will require defensible-space compliance reviews within 100 feet of structures, and new real-estate disclosure forms telling buyers whether a property meets the vegetation-management standards. "It's not pass/fail," Smith said. "It tells the seller this is the requirement, and it tells the buyer this is the condition, and those parties can work out how to address it." Smith also noted the district provides property evaluations and public guidance and pointed to an example landscaping project at Fire Station 1 the district has completed as a public demonstration of defensible-space design.

City and fire officials also addressed insurance concerns raised during public comment. Smith said the state Safer from Wildfires Act and the Department of Insurance guidance provide tools for homeowners and insurers; he said insurance markets largely have been responding to fire risk for years and that the new map itself is not expected to create a sudden statewide insurance reaction. "These maps aren't gonna change that," Smith said of insurers' broader actions, adding the city and district are providing resources to help residents retain coverage.

The city must also prepare evacuation-route analyses and submit them to Cal Fire as part of the safety-element update. Gates said staff will ask the council for additional funding to study evacuation routes and capacities in May.

Council members emphasized public education and outreach. Several speakers during the public hearing urged clearer signage and community-ready evacuation plans; Council member Robert Dean asked staff to make the map and the related guidance easy to find online.

The council voted 5-0 to adopt the ordinance. The city will apply Chapter 7A construction standards and defensible-space disclosure rules in affected areas and will begin follow-up work in the safety element and permitting process.

Ending: The ordinance sets compliance and disclosure expectations for future construction and real-estate transactions and begins a multistep process—evacuation analysis, safety-element revisions and outreach—that city staff say will take place alongside the broader general-plan update.