Total monthly cost of ownership
Cost to Own a Home in New Castle, Colorado
A $489,000 home here costs
$3,449per month, all in — with 20% down at today's 6.66% 30-year fixed rate.
A standard mortgage calculator would have told you $2,514. The real number is $935 higher every month — 37% 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.
New Castle against Garfield County and Colorado
| Measure | New Castle | Garfield County |
|---|---|---|
| Median home value | $488,600 | $490,600 |
| Median property tax | $2,069 | $2,095 |
| Effective tax rate | 0.423% | 0.427% |
| Median gross rent | $1,627 | $1,515 |
| Population | 4,878 | 62,034 |
The weather behind that power bill
New Castle sits in Garfield County, which averages a high of 92.1°F in its hottest month and a low of 13.4°F in its coldest, with 10.73" of precipitation a year and 34% of it in a single three-month stretch. That climate drives 631 cooling and 6,398 heating degree days, which is what sets the $145 electricity line above.
See the full climate breakdown for Garfield County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Garfield County
Full Garfield County cost breakdown · Every county in Colorado
Common questions
How much does it cost to own a home in New Castle?
A $489,000 home in New Castle, Colorado costs approximately $3,449 per month with 20% down at 6.66%. That is $2,514 principal and interest, $172 property tax, $142 homeowners insurance, $213 utilities and $408 set aside for maintenance.
What is the property tax rate in New Castle?
New Castle has an effective property tax rate of 0.423%, based on a median home value of $488,600 and median real estate taxes of $2,069. That is in line with the Garfield County average of 0.427%.
What is the average home price in New Castle?
The median owner-occupied home value in New Castle, Colorado is $488,600, against $490,600 across Garfield County.
Is it cheaper to rent or buy in New Castle?
Median gross rent in New Castle is $1,627 a month, against $3,449 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 New Castle — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance — NAIC average premium for Colorado.
- 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.