CondominiumResidential
430 Grand Bay Dr
KEY BISCAYNE, FL 33149
1999
Year BuiltThe year the home was originally built, according to county records.
Built 199912 floors100 units2,470–9,600 ft²
$517M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$5.1M
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$1477
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.
+57.3%vs the Key Biscayne ZIP median sale $/ft² ($939)
Sales Performance
$5.4M
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
—
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
2
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
2.0%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+4.8%per yeartypical hold 7.5 yrsfrom 51 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
20002004200720112014201820212026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
20002004200720112014201820212026
125 arms-length sales on record for this building.
Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
3 bd4+ bd
3 bed
87 units$4.5M · $1425/ft²
4 bed
11 units$6.4M · $1733/ft²
5 bed
2 units$9.5M · $1773/ft²
Recurring floor plansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
3 bd · 3.5 ba · 2,930 ft²
24 units$3.9M · $1318/ft²
3 bd · 5.5 ba · 3,950 ft²
23 units$7M · $1763/ft²
3 bd · 4 ba · 2,840 ft²
22 units$3.7M · $1316/ft²
3 bd · 5.5 ba · 3,630 ft²
11 units$5.7M · $1557/ft²
4 bd · 6 ba · 3,680 ft²
9 units$6.3M · $1724/ft²
3 bd · 5.5 ba · 3,680 ft²
4 units$5.5M · $1507/ft²
3 bd · 5 ba · 3,170 ft²
2 units$4.2M · $1326/ft²
One-off layouts
5 units
Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.
$2.9M–$3.8M
24 units
$3.8M–$4.6M
20 units
$4.7M–$5.6M
16 units
$5.7M–$6.4M
17 units
$6.6M–$7.3M
9 units
$7.4M–$8M
7 units
$8.2M–$8.8M
3 units
$9.5M–$10M
2 units
Value by Floor & LineAverage estimated price per square foot by floor range, using unit numbers to infer floors. Higher floors usually price higher — the gap shows how much the view is worth here.
Floors 1–3
$1431/ft²16 units · -3%
Floors 4–5
$1459/ft²16 units · -1%
Floors 6–8
$1494/ft²24 units · +1%
Floors 9–10
$1535/ft²16 units · +4%
Floors 11–12
$1642/ft²15 units · +11%
Unit lines by $/ft²Condo units stacked vertically share a unit line — the last digits of the unit number (like 05 in 1205, 1305, 1405). Lines share a layout and exposure, so comparing estimated $/ft² by line shows which position in the building commands a premium.
Line ·01
$1801/ft²12 units · +22%
Line ·02
$1703/ft²11 units · +15%
Line ·04
$1603/ft²11 units · +9%
Line ·03
$1565/ft²11 units · +6%
Line ·06
$1380/ft²10 units · -7%
Line ·07
$1339/ft²12 units · -9%
Line ·08
$1314/ft²11 units · -11%
Line ·05
$1311/ft²9 units · -11%
Ownership & Financing
Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.55%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.64%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.15.9 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.71%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.18%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$4,808,251
Median tax billThe middle annual property tax bill among the building's units.$43,158
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0
Recent SalesThe latest recorded arms-length sales in the building, newest first.
Unit 702Jul 16, 2026$5,500,000$1392/ft²Unit 902Apr 29, 2026$5,240,000$1327/ft²Unit 906Mar 28, 2024$3,700,000$1263/ft²Unit 505Nov 9, 2023$3,750,000$1280/ft²Unit 1108Jul 21, 2023$3,150,000$1109/ft²Unit 1205Apr 20, 2023$3,600,000$1229/ft²Unit 903Apr 6, 2023$4,379,000$1206/ft²Unit 107Mar 17, 2023$2,220,000$899/ft²Unit 1102Feb 27, 2023$5,200,000$1316/ft²Unit 1107Oct 14, 2022$3,450,000$1215/ft²
Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.
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.39 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.99%
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.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyMIAMI-DADE
PoolWhether the property has a pool, and what kind, such as in-ground.No
Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.
EHM
Key Biscayne K-8 CenterA-
Elementary · Grades PK–5 · 0.6 mi
Coral Gables Senior High SchoolC+
High · Grades 9–12 · 7.1 mi
Ponce De Leon Middle SchoolB
Middle · Grades 6–8 · 7.2 mi
District: Dade County School District
Neighborhood · ZIP 33149These 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.72
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.77
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.9
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.76%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.7%
PopulationHow many people live in this area.16,714
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,068 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$155,699
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$201,344
Average tempThe average temperature here across a full year.76°F
Annual precipHow much rain and melted snow falls here in a typical year.54 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.70%
All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.
430 Grand Bay Dr # 1an
5 bd · 5.5 ba · 9,600 ft²
430 Grand Bay Dr # 1cs
4 bd · 6 ba · 3,680 ft²
430 Grand Bay Dr # 1dn
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 1ds
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 1es
4 bd · 4 ba · 4,420 ft²
430 Grand Bay Dr # 2an
5 bd · 5.5 ba · 5,350 ft²
430 Grand Bay Dr # 2as
4 bd · 6.5 ba · 5,350 ft²
430 Grand Bay Dr # 2cs
4 bd · 6 ba · 3,680 ft²
430 Grand Bay Dr # 2dn
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 2ds
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 2en
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 2es
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 101
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 107
3 bd · 4 ba · 2,470 ft²
430 Grand Bay Dr # 201
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 202
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 203
3 bd · 5.5 ba · 3,630 ft²
430 Grand Bay Dr # 204
3 bd · 5.5 ba · 3,680 ft²
430 Grand Bay Dr # 207
3 bd · 5 ba · 3,170 ft²
430 Grand Bay Dr # 208
3 bd · 5 ba · 3,170 ft²
430 Grand Bay Dr # 301
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 302
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 303
3 bd · 5.5 ba · 3,630 ft²
430 Grand Bay Dr # 304
3 bd · 5.5 ba · 3,680 ft²
430 Grand Bay Dr # 305
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 306
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 307
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 308
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 401
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 402
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 403
3 bd · 5.5 ba · 3,630 ft²
430 Grand Bay Dr # 404
3 bd · 5.5 ba · 3,680 ft²
430 Grand Bay Dr # 405
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 406
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 407
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 408
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 501
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 502
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 503
3 bd · 5.5 ba · 3,630 ft²
430 Grand Bay Dr # 504
3 bd · 5.5 ba · 3,680 ft²
430 Grand Bay Dr # 505
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 506
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 507
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 508
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 601
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 602
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 603
3 bd · 5.5 ba · 3,630 ft²
430 Grand Bay Dr # 604
4 bd · 6 ba · 3,680 ft²
430 Grand Bay Dr # 605
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 606
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 607
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 608
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 701
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 702
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 703
3 bd · 5.5 ba · 3,630 ft²
430 Grand Bay Dr # 704
4 bd · 6 ba · 3,680 ft²
430 Grand Bay Dr # 705
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 706
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 707
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 708
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 801
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 802
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 803
3 bd · 5.5 ba · 3,630 ft²
430 Grand Bay Dr # 804
4 bd · 6 ba · 3,680 ft²
430 Grand Bay Dr # 805
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 806
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 807
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 808
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 901
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 902
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 903
3 bd · 5.5 ba · 3,630 ft²
430 Grand Bay Dr # 904
4 bd · 6 ba · 3,680 ft²
430 Grand Bay Dr # 905
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 906
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 907
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 908
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 1001
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 1002
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 1003
3 bd · 5.5 ba · 3,630 ft²
430 Grand Bay Dr # 1004
4 bd · 6 ba · 3,680 ft²
430 Grand Bay Dr # 1005
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 1006
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 1007
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 1008
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 1101
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 1102
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 1103
3 bd · 5.5 ba · 3,630 ft²
430 Grand Bay Dr # 1104
4 bd · 6 ba · 3,680 ft²
430 Grand Bay Dr # 1105
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 1106
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 1107
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 1108
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 1201
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 1202
3 bd · 5.5 ba · 3,950 ft²
430 Grand Bay Dr # 1203
3 bd · 5.5 ba · 3,630 ft²
430 Grand Bay Dr # 1204
4 bd · 6 ba · 3,680 ft²
430 Grand Bay Dr # 1205
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 1206
3 bd · 3.5 ba · 2,930 ft²
430 Grand Bay Dr # 1207
3 bd · 4 ba · 2,840 ft²
430 Grand Bay Dr # 1208
3 bd · 4 ba · 2,840 ft²
Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.
About 430 Grand Bay Dr
How many units are in 430 Grand Bay Dr, Key Biscayne, FL?
430 Grand Bay Dr, Key Biscayne, FL has 100 residential units across 12 floors, built in 1999, according to county assessor records.
What is a unit at 430 Grand Bay Dr, Key Biscayne, FL worth?
The median TopHap Estimate across the 100 units at 430 Grand Bay Dr, Key Biscayne, FL is $5,145,636. That works out to $1477 per square foot. Units run from 2,470 to 9,600 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.
Is 430 Grand Bay Dr, Key Biscayne, FL expensive for Key Biscayne?
Units at 430 Grand Bay Dr, Key Biscayne, FL carry a median of $1477 per square foot, 57% above the Key Biscayne median of $939 per square foot.
How often do units sell at 430 Grand Bay Dr, Key Biscayne, FL?
2 units at 430 Grand Bay Dr, Key Biscayne, FL sold in the last 12 months, out of 125 recorded arms-length sales all time. That is a turnover rate of 2.0% of the building per year. The median sale over that period was $5.4M.
Have units at 430 Grand Bay Dr, Key Biscayne, FL appreciated?
Across 51 repeat sales of the same unit, 430 Grand Bay Dr, Key Biscayne, FL returned a median 4.8% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 7.5 years.
What floor plans does 430 Grand Bay Dr, Key Biscayne, FL have?
The most common plan at 430 Grand Bay Dr, Key Biscayne, FL is a 3-bedroom of 2,930 square feet, repeated 24 times, with a median estimate of $3,862,851. TopHap identifies 7 recurring plans in the building.
More homes on Grand Bay Dr
- 455 Grand Bay Dr # 718$953K1 ba · 378 ft² · Sold $950K · Aug 2026
- 455 Grand Bay Dr # 212$1.7M1 bd · 1 ba · 849 ft² · Sold $1.7M · Jul 2026
- 430 Grand Bay Dr # 702$5.5M3 bd · 5.5 ba · 3,950 ft² · Sold $5.5M · Jul 2026
- 455 Grand Bay Dr # 618-19$1.6M1 bd · 1 ba · 791 ft² · Sold $1.6M · Jul 2026
- 455 Grand Bay Dr # 617$1.1M1 ba · 532 ft² · Sold $1.1M · Jul 2026
- 455 Grand Bay Dr # 214$870K1 ba · 354 ft² · Sold $865K · Jun 2026
- 455 Grand Bay Dr # 504$980K1 ba · 378 ft² · Sold $975K · Jun 2026
- 455 Grand Bay Dr # 503$2M1 bd · 1 ba · 849 ft² · Sold $2M · Jun 2026
- 455 Grand Bay Dr # 512$2M1 bd · 1 ba · 849 ft² · Sold $2M · Jun 2026
- 430 Grand Bay Dr # 902$8M3 bd · 5.5 ba · 3,950 ft² · Sold $5.2M · Apr 2026
- 455 Grand Bay Dr # 210$963K1 ba · 376 ft² · Sold $950K · Mar 2026
- 445 Grand Bay Dr # 303$3.5M3 bd · 4.5 ba · 3,480 ft² · Sold $3.5M · Mar 2026
Closest homes
- 430 Grand Bay Dr$8M0 ft · 3 bd · 5.5 ba · 3,950 ft² · Sold $4.1M · Jan 2008
- 430 Grand Bay Dr$4M0 ft · 3 bd · 3.5 ba · 2,930 ft² · Sold $1.8M · Sep 2008
- 430 Grand Bay Dr$4.2M0 ft · 3 bd · 5 ba · 3,170 ft² · Sold $1.8M · Feb 2008
- 430 Grand Bay Dr$3.9M0 ft · 3 bd · 4 ba · 2,840 ft² · Sold $2M · Jan 2007
- 430 Grand Bay Dr$4.3M0 ft · 3 bd · 4 ba · 2,840 ft² · Sold $1.9M · Apr 2009
- 430 Grand Bay Dr$6.2M0 ft · 3 bd · 5.5 ba · 3,950 ft² · Sold $1.4M · Feb 2001
- 430 Grand Bay Dr$4.3M0 ft · 3 bd · 4 ba · 2,840 ft² · Sold $2.4M · Dec 2020
- 430 Grand Bay Dr$5.6M0 ft · 4 bd · 6 ba · 3,680 ft² · Sold $3.3M · Apr 2020
More homes in Key Biscayne 33149
- 50 Ocean Lane Dr$1.5M3 bd · 2.5 ba · 1,730 ft² · Sold $1.5M · Aug 2026
- 1111 Crandon Blvd$1.5M2 bd · 2 ba · 1,782 ft² · Sold $1.5M · Aug 2026
- 121 Crandon Blvd$1.1M2 bd · 2 ba · 1,600 ft² · Sold $1.2M · Aug 2026
- 600 Grapetree Dr$2.1M3 bd · 3 ba · 2,281 ft² · Sold $2.1M · Aug 2026
- 1111 Crandon Blvd$2.7M2 bd · 2 ba · 1,782 ft² · Sold $2.7M · Aug 2026
- 1121 Crandon Blvd$980K2 bd · 2 ba · 1,409 ft² · Sold $1.1M · Aug 2026
- 271 Island Dr$3.7M5 bd · 4 ba · 2,745 ft² · Sold $3.8M · Aug 2026
- 781 Crandon Blvd$4M3 bd · 4.5 ba · 2,500 ft² · Sold $4M · Aug 2026
- 201 Crandon Blvd$1.3M2 bd · 2 ba · 1,531 ft² · Sold $1.3M · Aug 2026
- 669 S Mashta Dr$5.2M3 bd · 3.5 ba · 3,382 ft² · Sold $5.2M · Aug 2026
- 151 Crandon Blvd$1.4M2 bd · 2 ba · 1,506 ft² · Sold $1.3M · Aug 2026
- 1121 Crandon Blvd$1.9M2 bd · 2 ba · 1,782 ft² · Sold $2M · Aug 2026
Assigned schools
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