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Single Family ResidenceResidential
$623,493$400 / 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 88How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $165,500 on Aug 15, 2000

121 SEA ISLAND LN

BOCA RATON, FL 33431
2
Baths
1,557 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1971
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$623K
$551K low$696K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$165,500 · Aug 15, 2000

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,498 (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.$222,730 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$216,453
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$540,632

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.19 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.34%
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.minimal

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
CountyPalm Beach
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.1981
Lot (acres)The size of the land the home sits on, from county records.0.17
ConstructionThe main material the home's frame and walls are built from.Concrete Blocks
RoofThe main material covering the roof, such as asphalt shingle or tile.Tile
HeatingThe type of heating system in the home.Forced Air
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 573 ft²Porch · 330 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
Blue Lake Elementary SchoolA+
Elementary · Grades KG–5 · 0.6 mi
H
Spanish River Community High SchoolA-
High · Grades 9–12 · 1.9 mi
M
Omni Middle SchoolA
Middle · Grades 6–8 · 2.1 mi

District: Palm Beach County School District

Neighborhood · ZIP 33431These 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.75
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.70
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.15

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.86%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.26,362
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,790 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$103,354
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$138,577
Average tempThe average temperature here across a full year.75°F
Annual precipHow much rain and melted snow falls here in a typical year.60 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.66%

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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

121 Sea Island 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 less than 84% of homes in University Park Club
  • Costs more per square foot than 76% of homes in Palm Beach County
  • Has a smaller lot than 78% of homes in Boca Raton 33431
  • Newer than 85% of homes in University Park Club

What homes are worth in Boca Raton 33431

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

This home
$133K$5M

This home is worth more than 34% of homes in Boca Raton 33431.

How it measures up in Boca Raton 33431

The dot is this home. The mark in the middle is the typical home in Boca Raton 33431.

Estimated value$623,493
CheaperTypical $759,270Pricier

Pricier than 34% of homes nearby

Price per ft²$400
CheaperTypical $473Pricier

Pricier than 32% of homes nearby

Living area1,557 ft²
SmallerTypical 1,638 ft²Bigger

Bigger than 46% of homes nearby

Lot size0.17 ac
SmallerTypical 0.23 acBigger

Bigger than 22% of homes nearby

Year built1971
OlderTypical 1979Newer

Newer than 31% of homes nearby

How 121 Sea Island Ln ranks against every home in each area.
MeasureThis homeUniversity Park ClubBoca Raton 33431Palm Beach County
Estimated valuepricier than$623,49316% of homes34% of homes65% of homes
Price per ft²pricier than$40042% of homes32% of homes76% of homes
Living areabigger than1,557 ft²44% of homes46% of homes50% of homes
Lot sizebigger than0.17 ac31% of homes22% of homes38% of homes
Year builtnewer than197185% of homes31% of homes17% of homes

About 121 Sea Island Ln

How much is 121 Sea Island Ln, Boca Raton, FL worth?

The TopHap Estimate for 121 Sea Island Ln, Boca Raton, FL is $623,493 as of Jul 14, 2026. The likely range is $551,355 to $695,631. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 121 Sea Island Ln, Boca Raton, FL last sell?

121 Sea Island Ln, Boca Raton, FL last sold on Aug 15, 2000 for $165,500, according to the county's recorded deed.

How big is 121 Sea Island Ln, Boca Raton, FL?

121 Sea Island Ln, Boca Raton, FL has 2 bathrooms, 1,557 square feet of living space and a 0.17-acre lot.

When was 121 Sea Island Ln, Boca Raton, FL built?

121 Sea Island Ln, Boca Raton, FL was built in 1971, making it 55 years old. The building has 1 story.

What schools serve 121 Sea Island Ln, Boca Raton, FL?

121 Sea Island Ln, Boca Raton, FL is assigned to Blue Lake Elementary School (elementary), rated A+; Spanish River Community High School (high), rated A-; Omni Middle School (middle), rated A. All sit in Palm Beach County School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 121 Sea Island Ln, Boca Raton, FL compare to other homes in Boca Raton 33431?

Among the 7,867 homes in Boca Raton 33431, it is worth more than 34% of them ($623,493 against a typical $759,270), its price per square foot is higher than 32% of them ($400 against a typical $473), it is bigger than 46% of them (1,557 ft² against a typical 1,638 ft²), its lot is bigger than 22% of them (0.17 ac against a typical 0.23 ac) and it is newer than 31% of them (1971 against a typical 1979). Measured against all of Palm Beach County, it is worth more than 65% 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 121 Sea Island Ln, Boca Raton, FL?

The 2025 property tax bill for 121 Sea Island Ln, Boca Raton, FL was $3,498. The county assessed it at $222,730.

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Assigned schools

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