| Primary address | 21 Island Drive, Key Biscayne |
| Zip code | 33149 |
| County | Miami-Dade |
| Municipality | Key Biscayne |
| Parcel ID | 2452050240070 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 10/02/1996 |
| Sale price | $865,000 |
| Arm's length | Register |
| Property tax | $76,744 |
| Building sqft | 5,721 |
| Building class | Residential - Single Family: 1 Unit (0101) |
| Acreage | 0.414 |
| Year built | 1972 |
| Stories | 1 |
| Units | 1 |
| Bedrooms | 5 |
| Bathrooms | 5 |
| Zoning district | Register |
| School district | Miami-Dade County Public Schools |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
Property reports include comprehensive occupancy, improvement and development information (where available).
Create a free account to access valuable data points such as:
21 Island Drive, Key Biscayne, FL 33149 was built in 1972 and has a total of 5,721 square feet.
What is the assessed value of 21 Island Drive, Key Biscayne, FL 33149 and the property tax paid?Assessed at $4,544,767, the tax amount paid for 21 Island Drive, Key Biscayne, FL 33149 is $76,744.
When was 21 Island Drive, Key Biscayne, FL 33149 last sold and what was the last sale price?21 Island Drive, Key Biscayne, FL 33149 was last sold in 10/02/1996 for $865,000.
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
Create a free account to view the complete sales history for 21 Island Drive, Key Biscayne, including title documents, transfer conditions, mortgages and liens.
| Purchase date | Purchase price | Buyer name | Seller name |
|---|---|---|---|
| 10/02/1996 | $865,000 | Register | Register |
To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.
R: Recorded date
D: Document date
Access detailed property tax data for 21 Island Drive, Key Biscayne, FL 33149. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year: | 2025 |
| Property tax | $76,744 |
| Market value | $5,487,185 |
| Assessed value | $4,544,767 |
Here's the assessment & property tax history for 21 Island Drive, Key Biscayne, including the evolution of the total tax rate and corresponding property tax.
| Year | Market value | Assessment value | Total tax rate | Property tax | Year over year change |
|---|---|---|---|---|---|
| 2025 | $5,487,185 | $4,544,767 | 15.5108 | $76,744 | +9.71% |
| 2024 | $4,950,393 | $4,131,607 | 15.6226 | $69,952 | +3.40% |
| 2023 | $4,955,100 | $3,756,007 | 15.8731 | $67,652 | +16.44% |
| 2022 | $3,997,548 | $3,414,552 | 15.8911 | $58,102 | +13.75% |
| 2021 | $3,104,139 | $3,104,139 | 16.4556 | $51,080 | +9.13% |
Create a free account to unlock extended information for 21 Island Drive, Key Biscayne, including whether it's located in FEMA flood zones, floodways or special flood hazard areas, as well as the Coastal barriers resources system area (COBRA).
| FEMA flood zone(s) | AE (See more on map) |
Access the detailed traffic volume map for 21 Island Drive, Key Biscayne to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.
| View daily traffic map |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Key Biscayne K-8 Center | 8 | Public | PK, K-8 | 921 | 0.61 |
| Key Biscayne K-8 Center | 8 | Public | PK, K-8 | 921 | 0.61 |
| St Christophers Montessori | NR | Private | PK-5 | 103 | 1.03 |
| St Christophers Montessori | NR | Private | PK-5 | 103 | 1.03 |
| St Agnes Academy | NR | Private | PK-8 | 498 | 1.13 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Key Biscayne K-8 Center | 8 | Public | PK, K-8 | 921 | 0.61 |
| St Agnes Academy | NR | Private | PK-8 | 498 | 1.13 |
| Amikids Miami-Dade South | NR | Public | 6-12 | 14 | 3.79 |
| Mast Academy | 10 | Public | 6-12 | 1,535 | 3.81 |
| Fisher Island Day School | NR | Private | PK-8 | 112 | 5.35 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Amikids Miami-Dade South | NR | Public | 6-12 | 14 | 3.79 |
| Mast Academy | 10 | Public | 6-12 | 1,535 | 3.81 |
| Immaculata-La Salle High School | NR | Private | 9-12 | 869 | 5.24 |
| Immaculata-La Salle High School | NR | Private | 9-12 | 0 | 5.24 |
| Kingsbury Academy | NR | Private | K-12 | 0 | 5.63 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 21 Island Drive, Key Biscayne.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 40 Island Dr, Key Biscayne | 5,020 | 12/03/2020 | $5,918,220 |
| 490 S Mashta Dr, Key Biscayne | 6,369 | 12/09/2009 | $6,150,000 |
| 15 Cape Florida Dr, Key Biscayne | 5,267 | 12/09/2004 | $0 |
| 50 Island Dr, Key Biscayne | 5,966 | 02/13/2025 | $11,080,000 |
| 30 Island Dr, Key Biscayne | 4,835 | 11/21/2024 | $10 |
| 480 S Mashta Dr, Key Biscayne | 4,799 | 03/14/2025 | $10 |
| 60 Island Dr, Key Biscayne | 4,248 | 12/31/2001 | $1,900,000 |
| 20 Island Dr, Key Biscayne | 5,542 | 08/28/2000 | $1,760,000 |
| 41 Island Dr, Key Biscayne | 2,693 | 12/24/2025 | $10 |
| 61 Island Dr, Key Biscayne | 6,184 | 06/16/2021 | $3,400,000 |
| 71 Island Dr, Key Biscayne | 4,283 | 01/04/2022 | $10 |
| 303 Galen Dr, Key Biscayne | 46,209 | 11/12/1997 | $3,900,000 |
| 11 Island Dr, Key Biscayne | 3,542 | 12/23/1998 | $600,000 |
| 111 Cape Florida Dr, Key Biscayne | 10,131 | 01/17/2014 | $5,200,000 |
| 460 S Mashta Dr, Key Biscayne | 10,913 | 03/09/2010 | $1,440,900 |
| 10 Island Dr, Key Biscayne | 5,168 | 06/16/2022 | $7,290,000 |
| 51 Island Dr, Key Biscayne | 4,822 | 12/04/2023 | $5,150,000 |
| 81 Island Dr, Key Biscayne | 04/10/2024 | $4,500,000 | |
| 101 Cape Florida Dr, Key Biscayne | 5,150 | 12/29/2016 | $10 |
| 31 Island Dr, Key Biscayne | 6,762 | 08/04/2004 | $2,830,000 |