Cost to Own
United StatesWashingtonSnohomish CountyLake Cassidy Population 3,337 Data vintage ACS 2023 5-Year Rates updated 2026-07-30

Total monthly cost of ownership

Cost to Own a Home in Lake Cassidy, Washington

A $684,000 home here costs

$4,817

per month, all in — with 20% down at today's 6.66% 30-year fixed rate.

A standard mortgage calculator would have told you $3,516. The real number is $1,300 higher every month — 37% more than the payment most buyers budget for.

Lake Cassidy median: $683,600
Under 20% adds PMI
Freddie Mac PMMS
US average household

Where every dollar goes

Only the first line is a mortgage payment. Change any assumption above and every figure below recalculates.

Principal & interest30-year fixed, $547,200 borrowed $3,516
Property tax0.748% effective rate for Lake Cassidy itself $426
Homeowners insuranceWashington averages $1,001/yr (NAIC), or 0.178% of home value $101
Electricity14.95¢/kWh — Washington residential average, EIA $134
Water, sewer & trashUS household average $68
Maintenance reserve1% of home value per year $570
Total monthly $4,817

Lake Cassidy against Snohomish County and Washington

MeasureLake CassidySnohomish County
Median home value$683,600$644,600
Median property tax$5,115$5,121
Effective tax rate0.748%0.794%
Median gross rent$2,000$1,866
Population3,337834,648

The weather behind that power bill

Lake Cassidy sits in Snohomish County, which averages a high of 73.0°F in its hottest month and a low of 36.0°F in its coldest, with 33.37" of precipitation a year and 40% of it in a single three-month stretch. That climate drives 97 cooling and 5,039 heating degree days, which is what sets the $134 electricity line above.

See the full climate breakdown for Snohomish County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.

Other cities in Snohomish County

Full Snohomish County cost breakdown · Every county in Washington

Common questions

How much does it cost to own a home in Lake Cassidy?

A $684,000 home in Lake Cassidy, Washington costs approximately $4,817 per month with 20% down at 6.66%. That is $3,516 principal and interest, $426 property tax, $101 homeowners insurance, $202 utilities and $570 set aside for maintenance.

What is the property tax rate in Lake Cassidy?

Lake Cassidy has an effective property tax rate of 0.748%, based on a median home value of $683,600 and median real estate taxes of $5,115. That is lower than the Snohomish County average of 0.794%.

What is the average home price in Lake Cassidy?

The median owner-occupied home value in Lake Cassidy, Washington is $683,600, against $644,600 across Snohomish County.

Is it cheaper to rent or buy in Lake Cassidy?

Median gross rent in Lake Cassidy is $2,000 a month, against $4,817 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 Lake Cassidy — 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.

Full methodology