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Single Family ResidenceResidential
$810,377$517 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 91How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $625,000 on Jun 21, 2021

43 FIRST ST

BIG COPPITT KEY, FL
1
Beds
2
Baths
1,566 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.15 ac
Lot SizeThe size of the land the home sits on, from county records.
1958
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$810K
$738K low$882K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$625,000 · Jun 21, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,774 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$685,594 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$364,163
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$321,431
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$632,242
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$685,594

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.51
100
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
9
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
95
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
52
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
1
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.67 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.100%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyMONROE
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2013
Lot (acres)The size of the land the home sits on, from county records.0.15
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Mat/Raft Foundation (Slab)
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.None
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 272 ft²

Transaction History(1)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Gerald Adams Elementary SchoolD
Elementary · Grades PK–5 · 5.6 mi
H
Key West High SchoolC
High · Grades 9–12 · 8.0 mi
M
Horace O'Bryant SchoolD
Middle · Grades PK–8 · 8.6 mi

District: Monroe County School District

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

43 First St measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Costs less per square foot than 81% of homes in Monroe County
  • Older than 87% of homes in Monroe County

How it measures up in Monroe County

The dot is this home. The mark in the middle is the typical home in Monroe County.

Estimated value$810,377
CheaperTypical $990,000Pricier

Pricier than 36% of homes nearby

Price per ft²$517
CheaperTypical $720Pricier

Pricier than 19% of homes nearby

Living area1,566 ft²
SmallerTypical 1,352 ft²Bigger

Bigger than 62% of homes nearby

Lot size0.15 ac
SmallerTypical 0.16 acBigger

Bigger than 48% of homes nearby

Year built1958
OlderTypical 1983Newer

Newer than 13% of homes nearby

How 43 First St ranks against every home in each area.
MeasureThis homeMonroe County
Estimated valuepricier than$810,37736% of homes
Price per ft²pricier than$51719% of homes
Living areabigger than1,566 ft²62% of homes
Lot sizebigger than0.15 ac48% of homes
Year builtnewer than195813% of homes

About 43 First St

How much is 43 First St, Big Coppitt Key, FL worth?

The TopHap Estimate for 43 First St, Big Coppitt Key, FL is $810,377 as of Sep 24, 2026. The likely range is $738,493 to $882,261. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 43 First St, Big Coppitt Key, FL last sell?

43 First St, Big Coppitt Key, FL last sold on Jun 21, 2021 for $625,000, according to the county's recorded deed.

How big is 43 First St, Big Coppitt Key, FL?

43 First St, Big Coppitt Key, FL has 1 bedrooms, 2 bathrooms, 1,566 square feet of living space and a 0.15-acre lot.

When was 43 First St, Big Coppitt Key, FL built?

43 First St, Big Coppitt Key, FL was built in 1958, making it 68 years old. The building has 1 story.

What schools serve 43 First St, Big Coppitt Key, FL?

43 First St, Big Coppitt Key, FL is assigned to Gerald Adams Elementary School (elementary), rated D; Key West High School (high), rated C; Horace O'Bryant School (middle), rated D. All sit in Monroe County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 43 First St, Big Coppitt Key, FL compare to other homes in Monroe County?

Among the 44,388 homes in Monroe County, it is worth more than 36% of them ($810,377 against a typical $990,000), its price per square foot is higher than 19% of them ($517 against a typical $720), it is bigger than 62% of them (1,566 ft² against a typical 1,352 ft²), its lot is bigger than 48% of them (0.15 ac against a typical 0.16 ac) and it is newer than 13% of them (1958 against a typical 1983). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 43 First St, Big Coppitt Key, FL?

The 2025 property tax bill for 43 First St, Big Coppitt Key, FL was $6,774. The county assessed it at $685,594.

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Assigned schools

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