Total monthly cost of ownership
Cost to Own a Home in Sonoma, California
A $954,000 home here costs
$6,803per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $4,905. The real number is $1,898 higher every month — 39% more than the payment most buyers budget for.
Where every dollar goes
Only the first line is a mortgage payment. Change any assumption above and every figure below recalculates.
Sonoma against Sonoma County and California
| Measure | Sonoma | Sonoma County |
|---|---|---|
| Median home value | $954,300 | $779,000 |
| Median property tax | $7,066 | $5,580 |
| Effective tax rate | 0.740% | 0.716% |
| Median gross rent | $2,216 | $2,093 |
| Population | 10,726 | 485,642 |
The weather behind that power bill
Sonoma sits in Sonoma County, which averages a high of 84.1°F in its hottest month and a low of 36.9°F in its coldest, with 33.78" of precipitation a year and 60% of it in a single three-month stretch. That climate drives 410 cooling and 2,904 heating degree days, which is what sets the $299 electricity line above.
See the full climate breakdown for Sonoma County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Sonoma County
Full Sonoma County cost breakdown · Every county in California
Common questions
How much does it cost to own a home in Sonoma?
A $954,000 home in Sonoma, California costs approximately $6,803 per month with 20% down at 6.66%. That is $4,905 principal and interest, $588 property tax, $148 homeowners insurance, $367 utilities and $795 set aside for maintenance.
What is the property tax rate in Sonoma?
Sonoma has an effective property tax rate of 0.740%, based on a median home value of $954,300 and median real estate taxes of $7,066. That is higher than the Sonoma County average of 0.716%.
What is the average home price in Sonoma?
The median owner-occupied home value in Sonoma, California is $954,300, against $779,000 across Sonoma County.
Is it cheaper to rent or buy in Sonoma?
Median gross rent in Sonoma is $2,216 a month, against $6,803 to own the median home all in. Renting costs less month to month here, though renting builds no equity.
Sources & methodology
- Median home value, real estate taxes, gross rent and population for Sonoma — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance — NAIC average premium for California.
- Electricity price — EIA Electric Power Monthly Table 5.6.A.
- Mortgage rate — Freddie Mac PMMS, refreshed weekly.
- Maintenance (1%/yr) and water and sewer ($68/mo) are national estimates. Every assumption above is editable.