Sonoma County, California Eviction Risk: High

Sonoma County scores 8.2/10 (High) across its 35 tracked cities, placing it at rank 55 of 58 California counties, meaning 54 counties in the state carry more eviction risk than this one. For landlords and investors, that statewide position signals a comparatively measured operating environment: rent collection, notice compliance, and court timelines are shaped by California eviction laws state law, but the underlying economic conditions here, including an average rent of $2,196 and a rent burden averaging 32.4%, sit closer to the manageable end of the statewide spectrum.

The intra-county score range runs from 7.1 to 8.6, a spread of nearly a full point. That gap matters: a landlord with units in the county's lower-scoring markets faces a materially different risk profile than one concentrated in its highest-scoring neighborhoods. The county-wide average of 5.1 is a starting point, not a substitute for city-level due diligence before acquiring or managing rental property.

The cities inside Sonoma County

The highest eviction-risk locations in the county are concentrated in several smaller communities. Petaluma Center and Carmet both score 8.2/10, the county ceiling. Boyes Hot Springs, Penngrove, Geyserville, and Timber Cove each score 8.1/10. Larkfield-Wikiup, with a population of 8,765, scores 8/10, also landing in the riskiest tier despite being a sizable unincorporated community.

The county seat, Santa Rosa, is the largest city in the county at 177,090 residents and scores 5/10, right at the county midpoint. Petaluma, at 59,247 residents, and Windsor, at 26,081, both score 8/10, the lowest in the county. The city of Sonoma, with 10,670 residents, also scores 8.2/10. Risk is genuinely hyper-local here: two properties separated by a few miles can sit in meaningfully different risk tiers.

State-level laws that apply here

Every landlord in Sonoma County operates under California eviction laws state law. For nonpayment of rent, a curable lease violation, or an incurable violation such as nuisance or substantial damage, the required notice period is 3 days under CCP sections 1161(2) through 1161(4). A no-cause termination requires 30 days notice for tenancies under one year, or 60 days for tenancies of one year or more, under Civ. Code section 1946.1. Just-cause termination for owner move-in, building withdrawal, or substantial remodel also requires 60 days under Civ. Code section 1946.2. Understanding the California eviction laws eviction process from notice through lockout is essential before serving any notice, because procedural errors restart the clock.

California eviction laws state law imposes a rent cap of 5% plus CPI, capped at 10% annually under AB 1482 (Cal. Civ. Code section 1947.12), and requires just cause to terminate most covered tenancies. Court filing fees run $240 to $435; sheriff lockout fees add $75 to $145; attorney fees, if you retain counsel, typically run $1,500 to $4,500. An uncontested eviction takes 35 to 60 days; a contested one can stretch to 75 to 180 days. Reviewing California eviction costs in detail before budgeting for a worst-case scenario is strongly recommended, particularly given that rent control and just-cause requirements under AB 1482 can limit exit options in a protracted dispute.

With an average poverty rate of 8.5% and 39.6% of residents renting rather than owning, Sonoma County's risk profile varies significantly by location; the city grid above breaks down scores for each of the 35 tracked cities so investors can compare neighborhoods directly.