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Single Family ResidenceResidential
$1,789,334$816 / 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 79How 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 $1,800,000 on Aug 31, 2026

34 S BLACKWATER LN

KEY LARGO, FL 33037
3
Beds
2
Baths
2,192 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.
1991
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$1.8M
$1.4M low$2.2M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,800,000 · Aug 31, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,102 (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.$1,273,814 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$849,994
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$423,820
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,272,980
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,273,814

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.125 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.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Covered
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
ViewThe type of view from the property, or another feature of the site that affects value.Canal
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 16 ft²Patio · 16 ft²Porch · 1,271 ft²Boat access

Transaction History(3)

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
Key Largo SchoolA-
Elementary · Grades PK–8 · 0.5 mi
H
Coral Shores High SchoolC+
High · Grades 9–12 · 14.6 mi

District: Monroe County School District

Neighborhood · ZIP 33037These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.139
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.81
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.10

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.61%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.6%
PopulationHow many people live in this area.13,627
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.83 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$75,684
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$116,746
Average tempThe average temperature here across a full year.76°F
Annual precipHow much rain and melted snow falls here in a typical year.53 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.75%

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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

34 S Blackwater Ln 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.

  • Worth more than 78% of homes in Monroe County
  • Bigger than 83% of homes in Monroe County
  • Newer than 69% of homes in Monroe County

What homes are worth in Key Largo 33037

Each bar is how many homes fall in that price range. The marker is this home.

This home
$404K$10M

This home is worth more than 68% of homes in Key Largo 33037.

How it measures up in Key Largo 33037

The dot is this home. The mark in the middle is the typical home in Key Largo 33037.

Estimated value$1,789,334
CheaperTypical $1,099,999Pricier

Pricier than 68% of homes nearby

Price per ft²$816
CheaperTypical $738Pricier

Pricier than 57% of homes nearby

Living area2,192 ft²
SmallerTypical 1,400 ft²Bigger

Bigger than 78% of homes nearby

Lot size0.15 ac
SmallerTypical 0.17 acBigger

Bigger than 44% of homes nearby

Year built1991
OlderTypical 1983Newer

Newer than 68% of homes nearby

How 34 S Blackwater Ln ranks against every home in each area.
MeasureThis homeKey Largo 33037Monroe County
Estimated valuepricier than$1,789,33468% of homes78% of homes
Price per ft²pricier than$81657% of homes60% of homes
Living areabigger than2,192 ft²78% of homes83% of homes
Lot sizebigger than0.15 ac44% of homes47% of homes
Year builtnewer than199168% of homes69% of homes

About 34 S Blackwater Ln

How much is 34 S Blackwater Ln, Key Largo, FL worth?

The TopHap Estimate for 34 S Blackwater Ln, Key Largo, FL is $1,789,334 as of Sep 24, 2026. The likely range is $1,416,366 to $2,162,302. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 34 S Blackwater Ln, Key Largo, FL last sell?

34 S Blackwater Ln, Key Largo, FL last sold on Aug 31, 2026 for $1,800,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 34 S Blackwater Ln, Key Largo, FL?

34 S Blackwater Ln, Key Largo, FL has 3 bedrooms, 2 bathrooms, 2,192 square feet of living space and a 0.15-acre lot.

When was 34 S Blackwater Ln, Key Largo, FL built?

34 S Blackwater Ln, Key Largo, FL was built in 1991, making it 35 years old. The building has 2 stories.

What schools serve 34 S Blackwater Ln, Key Largo, FL?

34 S Blackwater Ln, Key Largo, FL is assigned to Key Largo School (elementary), rated A-; Coral Shores High School (high), rated C+. All sit in Monroe County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 34 S Blackwater Ln, Key Largo, FL compare to other homes in Key Largo 33037?

Among the 9,993 homes in Key Largo 33037, it is worth more than 68% of them ($1,789,334 against a typical $1,099,999), its price per square foot is higher than 57% of them ($816 against a typical $738), it is bigger than 78% of them (2,192 ft² against a typical 1,400 ft²), its lot is bigger than 44% of them (0.15 ac against a typical 0.17 ac) and it is newer than 68% of them (1991 against a typical 1983). Measured against all of Monroe County, it is worth more than 78% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 34 S Blackwater Ln, Key Largo, FL?

The 2025 property tax bill for 34 S Blackwater Ln, Key Largo, FL was $11,102. The county assessed it at $1,273,814.

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