Total monthly cost of ownership
Cost to Own a Home in Cottage Lake, Washington
A $1,164,000 home here costs
$8,162per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $5,984. The real number is $2,178 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.
Cottage Lake against King County and Washington
| Measure | Cottage Lake | King County |
|---|---|---|
| Median home value | $1,164,000 | $811,200 |
| Median property tax | $10,001 | $6,785 |
| Effective tax rate | 0.859% | 0.836% |
| Median gross rent | $2,374 | $2,035 |
| Population | 23,170 | 2,262,713 |
The weather behind that power bill
Cottage Lake sits in King County, which averages a high of 76.7°F in its hottest month and a low of 35.3°F in its coldest, with 63.28" of precipitation a year and 42% of it in a single three-month stretch. That climate drives 151 cooling and 4,991 heating degree days, which is what sets the $134 electricity line above.
See the full climate breakdown for King County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in King County
Full King County cost breakdown · Every county in Washington
Common questions
How much does it cost to own a home in Cottage Lake?
A $1,164,000 home in Cottage Lake, Washington costs approximately $8,162 per month with 20% down at 6.66%. That is $5,984 principal and interest, $833 property tax, $173 homeowners insurance, $202 utilities and $970 set aside for maintenance.
What is the property tax rate in Cottage Lake?
Cottage Lake has an effective property tax rate of 0.859%, based on a median home value of $1,164,000 and median real estate taxes of $10,001. That is higher than the King County average of 0.836%.
What is the average home price in Cottage Lake?
The median owner-occupied home value in Cottage Lake, Washington is $1,164,000, against $811,200 across King County.
Is it cheaper to rent or buy in Cottage Lake?
Median gross rent in Cottage Lake is $2,374 a month, against $8,162 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 Cottage Lake — 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.