Total monthly cost of ownership
Cost to Own a Home in Dennis, Massachusetts
A $835,000 home here costs
$5,858per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $4,293. The real number is $1,565 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.
Dennis against Barnstable County and Massachusetts
| Measure | Dennis | Barnstable County |
|---|---|---|
| Median home value | $835,300 | $575,900 |
| Median property tax | $3,915 | $4,090 |
| Effective tax rate | 0.469% | 0.710% |
| Median gross rent | $1,542 | $1,596 |
| Population | 1,903 | 230,073 |
The weather behind that power bill
Dennis sits in Barnstable County, which averages a high of 80.8°F in its hottest month and a low of 24.1°F in its coldest, with 44.7" of precipitation a year and 29% of it in a single three-month stretch. That climate drives 632 cooling and 5,518 heating degree days, which is what sets the $259 electricity line above.
See the full climate breakdown for Barnstable County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Barnstable County
Full Barnstable County cost breakdown · Every county in Massachusetts
Common questions
How much does it cost to own a home in Dennis?
A $835,000 home in Dennis, Massachusetts costs approximately $5,858 per month with 20% down at 6.66%. That is $4,293 principal and interest, $326 property tax, $216 homeowners insurance, $327 utilities and $696 set aside for maintenance.
What is the property tax rate in Dennis?
Dennis has an effective property tax rate of 0.469%, based on a median home value of $835,300 and median real estate taxes of $3,915. That is lower than the Barnstable County average of 0.710%.
What is the average home price in Dennis?
The median owner-occupied home value in Dennis, Massachusetts is $835,300, against $575,900 across Barnstable County.
Is it cheaper to rent or buy in Dennis?
Median gross rent in Dennis is $1,542 a month, against $5,858 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 Dennis — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance — NAIC average premium for Massachusetts.
- 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.