Total monthly cost of ownership
Cost to Own a Home in Big Coppitt Key, Florida
A $591,000 home here costs
$4,530per month, all in, with 20% down at today's 7.24% 30-year fixed rate. By the 28% rule that takes a household income of about $194,000 a year.
A standard mortgage calculator would have told you $3,222. The real number is $1,308 higher every month, 41% more than the payment most buyers budget for.
Compare Monroe County with anywhere in America · full county breakdown
Small-place caveat: the Census publishes these figures for Big Coppitt Key from a five-year rolling sample, and with about 3,333 residents that sample is small. The median home value here carries a much wider margin of error than a big-city figure does, so treat it as indicative rather than exact. The Monroe County figures are drawn from a far larger sample if you want a steadier number.
Where every dollar goes
Only the first line is a mortgage payment. Change any assumption above and every figure below recalculates.
Big Coppitt Key against Monroe County and Florida
| Measure | Big Coppitt Key | Monroe County |
|---|---|---|
| Median home value | $590,700 | $723,800 |
| Median property tax | $2,700 | $3,943 |
| Effective tax rate | 0.457% | 0.545% |
| Median gross rent | $2,274 | $1,959 |
| Population | 3,333 | 81,840 |
The weather behind that power bill
Big Coppitt Key sits in Monroe County, which averages a high of 92.6°F in its hottest month and a low of 53.1°F in its coldest, with 55.28" of precipitation a year and 48% of it in a single three-month stretch. That climate drives 4,136 cooling and 230 heating degree days, which is what sets the $165 electricity line above.
See the full climate breakdown for Monroe County , month by month temperatures, rainy season timing, snowfall and heating and cooling costs.
Other cities in Monroe County
Talk to someone who works this market
These are Big Coppitt Key averages. What one specific house costs to own, or what it would sell for today, depends on the street and the condition of the place. We will connect you with one licensed local agent who works Big Coppitt Key every week. Free, no obligation, and we never sell your details to a list.
I'm looking to buy in Big Coppitt Key I already own here and may sell
Common questions
How much does it cost to own a home in Big Coppitt Key?
A $591,000 home in Big Coppitt Key, Florida costs approximately $4,530 per month with 20% down at 7.24%. That is $3,222 principal and interest, $225 property tax, $357 homeowners insurance, $233 utilities and $493 set aside for maintenance.
What is the property tax rate in Big Coppitt Key?
Big Coppitt Key has an effective property tax rate of 0.457%, based on a median home value of $590,700 and median real estate taxes of $2,700. That is lower than the Monroe County average of 0.545%.
What is the average home price in Big Coppitt Key?
The median owner-occupied home value in Big Coppitt Key, Florida is $590,700, against $723,800 across Monroe County.
Is it cheaper to rent or buy in Big Coppitt Key?
Median gross rent in Big Coppitt Key is $2,274 a month, against $4,530 to own the median home all in. Renting costs less month to month here, though renting builds no equity.
What salary do you need to buy a home in Big Coppitt Key?
Using the standard 28% rule, housing costs at no more than 28% of gross income, buying the median home in Big Coppitt Key, Florida at today's rate takes a household income of roughly $194,000 a year. That covers the full $4,530 monthly cost, not just the mortgage payment.
Sources & methodology
- Median home value, real estate taxes, gross rent and population for Big Coppitt Key, US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
- Homeowners insurance, NAIC average premium for Florida.
- 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.