CAPE FLORIDA SUB SEC 1
420 Island Dr, Key Biscayne FL 33149
6 beds · 6.5 baths · 6,405 ft²
6
Bedrooms
6.5
Bathrooms
6,405
Sq. Ft.
2017
Year Built
356
Days on Market
Description
Spectacular and impeccably appointed modern residence situated on a 13,651 SF lot on prestigious Island Drive—one of Key Biscayne’s most elevated streets. Boasting a total of 8,011 SF, this 6-bedroom, 6 full bath + 2 half bath home is open, bright, and flooded with natural light throughout. Enjoy breathtaking water views and private access to the water in a setting that blends refined luxury with ultimate privacy. This residence showcases exquisitely curated, high-end designer finishes, a dramatic wine cellar, two expansive family rooms, and a closed 2-car garage. The outdoor living area is equally impressive, featuring a sleek summer kitchen and lush, professionally designed landscaping—ideal for elegant island living and entertaining. Per approved plans 6,405 SF under AC -8,682 SF Total
Facts
- MLS#
- A11812864
- Subdivision
- CAPE FLORIDA SUB SEC 1
- Property Type
- Residential
- Property Sub Type
- Single Family Residence
- Year Built
- 2017
- Lot Size
- 13,651 ft²
- Sq. Ft.
- 6,405 ft²
- Sq. Mt.
- 595 m²
- Price per sq. ft.
- $2,027/ft²
- Price per sq. mt.
- $21,815/m²
- Stories
- —
- Garage
- —
- Pool
- —
- Days on Market
- 356 days
- Listed
- May 30, 2025
- Last Updated
- May 21, 2026
- Price/Lot Sq.Ft.
- $951/ft²
Comparable homes
Same ZIP, similar price + bedrooms.
SOLD$12,950,000
6 bd · 6 ba · 5,191 sqft
945 Mariner Drive, Key Biscayne FL 33149

$11,990,000
6 bd · 7 ba · 5,960 sqft
365 Gulf Rd, Key Biscayne FL 33149
SOLD$13,500,000
6 bd · 6 ba · 6,985 sqft
890 HARBOR DRIVE, Key Biscayne FL 33149
SOLD$14,250,000
6 bd · 7 ba · 6,373 sqft
900 HARBOR DRIVE, Key Biscayne FL 33149

$11,300,000
6 bd · 8 ba · 5,216 sqft
610 Harbor Cir, Key Biscayne FL 33149
SOLD$11,500,000
6 bd · 6 ba · 6,020 sqft
501 N Mashta Dr, Key Biscayne FL 33149
SOLD$13,250,000
5 bd · 5 ba · 3,620 sqft
640 S Mashta Dr, Key Biscayne FL 33149
SOLD$12,000,000
5 bd · 9 ba · 8,240 sqft
100 Cape Florida Dr, Key Biscayne FL 33149
Market insights for Key Biscayne
Live MLS-derived activity. Forecast is a conservative rule-of-thumb estimate — not a guarantee.
Sellers market
May 2026
34
Median days to sold
+4.5%
1-year price forecast (est.)
Price & tax history
From the live MIAMI MLS feed. Older history requires the ListingHistory resource (not yet enabled).
| 4/6/2026 | Price change | $12,980,000-7.3% |
| 5/30/2025 | Listed for sale | $14,000,000 |
History reflects fields present on the live MLS record. Full multi-year history requires the MIAMI ListingHistory resource (not yet enabled).
Location
GreatSchools Summary Ratings
Public + private K-12 schools within 5 miles of this listing.
The Quest CenterPK,KG,1,2,3,4,5,6,7,8,9,10,11,12 · public · 0.3 mi
Driftwood Middle School6,7,8 · public · 0.5 mi
Driftwood Elementary SchoolPK,KG,1,2,3,4,5 · public · 0.5 mi
Grace Christian AcademyKG,1,2,3,4,5,6,7,8,9,10,11,12 · private · 0.7 mi
Sheridan Park Elementary SchoolPK,KG,1,2,3,4,5 · public · 0.7 mi
PK-12 Virtual Academy Inc.3,5,8,9 · private · 0.7 mi
Hollywood Christian SchoolPK,TK,KG,1,2,3,4,5,6,7,8,9,10,11,12 · private · 1.0 mi
Lycee France-AmericanPK,KG,1,2,3,4,5 · private · 1.0 mi
International School Of Broward6,7,8,9,10,11,12 · charter · 1.1 mi
St Anthonys School of Higher Education1,2,3,4,5,6,7,8,9,10,11,12 · private · 1.2 mi
Estimated Monthly Payment
$80,052/mo
Principal & Interest
$69,085
Property Tax
$10,817
Insurance
$150
HOA
$0
Estimates only. Actual payment depends on credit, lender, insurance carrier, and FL/Miami-Dade specifics. Contact Rangely for a precise quote.
The data relating to real estate for sale on this website comes in part from the Southeast Florida Multiple Listing Service. MLS Data is deemed reliable, but is not guaranteed accurate by MIAMI REALTORS®.
Accuracy of listing information is not guaranteed. Listing information is provided for personal consumer, non-commercial use, solely to identify potential properties for potential purchase. All other use is strictly prohibited and may be a violation of federal and state law.
Copyright Southeast Florida MLS a/k/a SEFMLS © 2026.
Updated within 24 hours
Similar listings nearby
More homes in Key Biscayne around $12,980,000.

640 S Mashta Dr, Key Biscayne FL 33149

221 Knollwood Dr, Key Biscayne FL 33149

111 Reef Ln, Key Biscayne FL 33149

610 Harbor Cir, Key Biscayne FL 33149

445 Grand Bay Dr # 1001, Key Biscayne FL 33149

31 Island Dr, Key Biscayne FL 33149
