Total monthly cost of ownership
Cost to Own a Home in Napa, California
A $825,000 home here costs
$5,891per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $4,241. The real number is $1,650 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.
Napa against Napa County and California
| Measure | Napa | Napa County |
|---|---|---|
| Median home value | $824,500 | $838,800 |
| Median property tax | $5,603 | $5,840 |
| Effective tax rate | 0.680% | 0.696% |
| Median gross rent | $2,165 | $2,141 |
| Population | 78,816 | 136,070 |
The weather behind that power bill
Napa sits in Napa County, which averages a high of 84.6°F in its hottest month and a low of 38.8°F in its coldest, with 39.71" of precipitation a year and 60% of it in a single three-month stretch. That climate drives 604 cooling and 3,375 heating degree days, which is what sets the $299 electricity line above.
See the full climate breakdown for Napa County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Napa County
Full Napa County cost breakdown · Every county in California
Common questions
How much does it cost to own a home in Napa?
A $825,000 home in Napa, California costs approximately $5,891 per month with 20% down at 6.66%. That is $4,241 principal and interest, $468 property tax, $128 homeowners insurance, $367 utilities and $688 set aside for maintenance.
What is the property tax rate in Napa?
Napa has an effective property tax rate of 0.680%, based on a median home value of $824,500 and median real estate taxes of $5,603. That is lower than the Napa County average of 0.696%.
What is the average home price in Napa?
The median owner-occupied home value in Napa, California is $824,500, against $838,800 across Napa County.
Is it cheaper to rent or buy in Napa?
Median gross rent in Napa is $2,165 a month, against $5,891 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 Napa — 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.