Total monthly cost of ownership
Cost to Own a Home in Williams Bay, Wisconsin
A $398,000 home here costs
$3,058per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $2,046. The real number is $1,012 higher every month — 49% 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.
Williams Bay against Walworth County and Wisconsin
| Measure | Williams Bay | Walworth County |
|---|---|---|
| Median home value | $397,600 | $275,900 |
| Median property tax | $3,983 | $3,964 |
| Effective tax rate | 1.002% | 1.437% |
| Median gross rent | $799 | $1,090 |
| Population | 2,967 | 105,447 |
The weather behind that power bill
Williams Bay sits in Walworth County, which averages a high of 82.9°F in its hottest month and a low of 13.4°F in its coldest, with 36.74" of precipitation a year and 35% of it in a single three-month stretch. That climate drives 631 cooling and 6,933 heating degree days, which is what sets the $177 electricity line above.
See the full climate breakdown for Walworth County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Walworth County
Full Walworth County cost breakdown · Every county in Wisconsin
Common questions
How much does it cost to own a home in Williams Bay?
A $398,000 home in Williams Bay, Wisconsin costs approximately $3,058 per month with 20% down at 6.66%. That is $2,046 principal and interest, $332 property tax, $102 homeowners insurance, $245 utilities and $332 set aside for maintenance.
What is the property tax rate in Williams Bay?
Williams Bay has an effective property tax rate of 1.002%, based on a median home value of $397,600 and median real estate taxes of $3,983. That is lower than the Walworth County average of 1.437%.
What is the average home price in Williams Bay?
The median owner-occupied home value in Williams Bay, Wisconsin is $397,600, against $275,900 across Walworth County.
Is it cheaper to rent or buy in Williams Bay?
Median gross rent in Williams Bay is $799 a month, against $3,058 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 Williams Bay — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance — NAIC average premium for Wisconsin.
- 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.