Total monthly cost of ownership
Cost to Own a Home in San Ramon, California
A $1,359,000 home here costs
$9,530per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $6,987. The real number is $2,544 higher every month — 36% 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.
San Ramon against Contra Costa County and California
| Measure | San Ramon | Contra Costa County |
|---|---|---|
| Median home value | $1,359,100 | $830,800 |
| Median property tax | $10,001 | $6,903 |
| Effective tax rate | 0.736% | 0.831% |
| Median gross rent | $2,916 | $2,322 |
| Population | 85,734 | 1,161,458 |
The weather behind that power bill
San Ramon sits in Contra Costa County, which averages a high of 82.8°F in its hottest month and a low of 41.3°F in its coldest, with 26.05" of precipitation a year and 58% of it in a single three-month stretch. That climate drives 926 cooling and 3,309 heating degree days, which is what sets the $299 electricity line above.
See the full climate breakdown for Contra Costa County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Contra Costa County
Full Contra Costa County cost breakdown · Every county in California
Common questions
How much does it cost to own a home in San Ramon?
A $1,359,000 home in San Ramon, California costs approximately $9,530 per month with 20% down at 6.66%. That is $6,987 principal and interest, $834 property tax, $211 homeowners insurance, $367 utilities and $1,133 set aside for maintenance.
What is the property tax rate in San Ramon?
San Ramon has an effective property tax rate of 0.736%, based on a median home value of $1,359,100 and median real estate taxes of $10,001. That is lower than the Contra Costa County average of 0.831%.
What is the average home price in San Ramon?
The median owner-occupied home value in San Ramon, California is $1,359,100, against $830,800 across Contra Costa County.
Is it cheaper to rent or buy in San Ramon?
Median gross rent in San Ramon is $2,916 a month, against $9,530 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 San Ramon — 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.