Total monthly cost of ownership
Cost to Own a Home in Derry, New Hampshire
A $357,000 home here costs
$3,110per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $1,835. The real number is $1,275 higher every month — 69% 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.
Derry against Rockingham County and New Hampshire
| Measure | Derry | Rockingham County |
|---|---|---|
| Median home value | $356,700 | $461,400 |
| Median property tax | $6,890 | $7,512 |
| Effective tax rate | 1.932% | 1.628% |
| Median gross rent | $1,473 | $1,619 |
| Population | 21,668 | 317,163 |
The weather behind that power bill
Derry sits in Rockingham County, which averages a high of 82.0°F in its hottest month and a low of 14.3°F in its coldest, with 46.3" of precipitation a year and 27% of it in a single three-month stretch. That climate drives 499 cooling and 6,865 heating degree days, which is what sets the $246 electricity line above.
See the full climate breakdown for Rockingham County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Rockingham County
Full Rockingham County cost breakdown · Every county in New Hampshire
Common questions
How much does it cost to own a home in Derry?
A $357,000 home in Derry, New Hampshire costs approximately $3,110 per month with 20% down at 6.66%. That is $1,835 principal and interest, $575 property tax, $89 homeowners insurance, $314 utilities and $298 set aside for maintenance.
What is the property tax rate in Derry?
Derry has an effective property tax rate of 1.932%, based on a median home value of $356,700 and median real estate taxes of $6,890. That is higher than the Rockingham County average of 1.628%.
What is the average home price in Derry?
The median owner-occupied home value in Derry, New Hampshire is $356,700, against $461,400 across Rockingham County.
Is it cheaper to rent or buy in Derry?
Median gross rent in Derry is $1,473 a month, against $3,110 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 Derry — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance — NAIC average premium for New Hampshire.
- 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.