Total monthly cost of ownership
Cost to Own a Home in Coupeville, Washington
A $495,000 home here costs
$3,534per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $2,545. The real number is $989 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.
Coupeville against Island County and Washington
| Measure | Coupeville | Island County |
|---|---|---|
| Median home value | $495,400 | $535,300 |
| Median property tax | $3,618 | $3,765 |
| Effective tax rate | 0.730% | 0.703% |
| Median gross rent | $1,009 | $1,631 |
| Population | 1,934 | 86,747 |
The weather behind that power bill
Coupeville sits in Island County, which averages a high of 70.5°F in its hottest month and a low of 36.2°F in its coldest, with 21.74" of precipitation a year and 38% of it in a single three-month stretch. That climate drives 22 cooling and 5,402 heating degree days, which is what sets the $134 electricity line above.
See the full climate breakdown for Island County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Island County
Full Island County cost breakdown · Every county in Washington
Common questions
How much does it cost to own a home in Coupeville?
A $495,000 home in Coupeville, Washington costs approximately $3,534 per month with 20% down at 6.66%. That is $2,545 principal and interest, $301 property tax, $73 homeowners insurance, $202 utilities and $413 set aside for maintenance.
What is the property tax rate in Coupeville?
Coupeville has an effective property tax rate of 0.730%, based on a median home value of $495,400 and median real estate taxes of $3,618. That is higher than the Island County average of 0.703%.
What is the average home price in Coupeville?
The median owner-occupied home value in Coupeville, Washington is $495,400, against $535,300 across Island County.
Is it cheaper to rent or buy in Coupeville?
Median gross rent in Coupeville is $1,009 a month, against $3,534 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 Coupeville — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance — NAIC average premium for Washington.
- 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.