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Cost of homeownership in Sonoma County, California

Real dollar cost of ownership, rent-vs-buy analysis, and flood risk, backed by Census ACS, FEMA, and FHFA data. Population: 488,436.

Median home value
$748,500
Median property tax
$5,333
Monthly owner cost
$2,915
with mortgage
Affordability (cost % of income)
21.8%

Total annual ownership cost

Breakdown of what owning a typical home in Sonoma County costs each year.

  • Property taxes$5,333
  • Insurance estimate$1,500
  • Utilities / energy$3,514
  • Maintenance (1% of value)$7,485
  • Total$17,832/yr · $1,486/mo

Insurance and energy figures typically vary by property. Adjust in the calculators for a personalized estimate.

Total
$17,832
/ year

Rent vs. buy in Sonoma County

Pre-filled with local median home value, median gross rent (Census ACS / HUD FMR), and current FRED rate.

Flood risk

Historical signal from FEMA National Flood Insurance Program.

VERY-HIGH RISK
Total claims
525
Avg claim
$26,996
Active policies
419
Avg premium
$1,068
NFIP policy

Historical claims do not capture uninsured properties. A low score does not eliminate flood risk. FEMA flood-zone maps at msc.fema.gov list parcel-level designations.

Full flood-risk breakdown →

Home price trend in California

FHFA House Price Index, quarterly.

vs. California average
Home value above state average.
Property tax above state average.
Homeownership
61.6%

Share of units owner-occupied (Census ACS).

Median household income
$99,266

Census ACS 5-year estimate.

Housing cost burden in Sonoma County

Share of households paying 30% or more of income on housing (HUD CHAS 2017-2021). HUD does not publish county-level CHAS rollups through the public API, so California state data is shown for local context alongside the US average.

California: 30%+ cost burdened
68.8%
7,335,245 households surveyed
California: severely burdened (50%+)
33.3%
Paying at least half of income on housing.
Owner vs renter burden
Owner 30%+: 49.9%
Renter 30%+: 48.4%
Renters typically carry a heavier cost burden than owners with a fixed-rate mortgage.

Affordability by income bracket

Monthly 30% housing budget at each income vs the median owner cost in Sonoma County. Bars above the dashed line can absorb this county's typical ownership cost.

HUD area median income (4-person household) for California: $118,100. Income limits define 80% AMI at $94,500 and 50% AMI at $59,050.

Frequently asked questions

How much does it cost to own a home in Sonoma County?

Based on Census ACS, typical total annual cost in Sonoma County is around $17,832 ($1,486 per month), covering property tax, insurance estimate, utilities, and 1% maintenance. Your actual cost varies by home age, size, and location within the county.

What is the property tax in Sonoma County?

Median annual property tax is $5,333 on the county's median home value of $748,500 (Census ACS).

Is it cheaper to rent or buy in Sonoma County?

Annual ownership cost is roughly 27% lower than annual rent at the county's median. Use the calculator below to model your specific situation.

What is the flood risk in Sonoma County?

very-high historical flood-risk score from FEMA NFIP: 525 claims, average claim $26,996.

Data sources

Disclaimer. HomeRule is not a real estate agent, lender, appraiser, or financial advisor. This content is for educational and informational purposes only. Actual costs vary significantly by property, location, and individual circumstances. Consult qualified professionals for personalized advice.