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$7,450,000
· $1,632/sqft · Est. $41,863/mo
7 bd · 7 ba + 2 half · 4,565 sqft · MLS# A12034564
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Listing details for 425 Harbor Dr, Key Biscayne, FL 33149: Discover this striking contemporary residence, perfectly positioned on an oversized 9,258 SF lot on Harbor Drive, one of Key Biscayne’s most elegant and prestigious streets. Built in 2020, this architectural masterpiece offers 6 bedrooms plus a private office, 7 full baths, and 2 powder rooms across 4,565 SF of beautifully designed living space. Filled with natural light, the home showcases expansive open living areas, impressive volume throughout, and a sleek custom kitchen featuring bespoke cabinetry and top-of-the-line finishes. An elevator provides seamless access to all three levels, culminating in a spectacular rooftop terrace with captivating island views and refreshing bay breezes…a unique advantage of being just moments from the water. Designed for effortless indoor-outdoor living, the exterior features a resort-style saltwater pool and spa, summer kitchen, cabana bath, and generous entertaining areas surrounded by lush tropical landscaping. Additional highlights include , EV charger, and ample driveway parking. Combining exceptional design, comfort, and functionality, this residence embodies the very best of island living in one of Key Biscayne’s most distinguished locations. Just minutes from Miami, Key Biscayne is a hidden island paradise where pristine beaches, world-class outdoor recreation, and a relaxed yet sophisticated lifestyle come together in a way that few places can match.
Bedrooms
7
Bathrooms
7 full · 2 half
Square Feet
4,565
Year Built
2020
Garage
1 space
HOA
No
Taxes
—
MLS# A12034564 · Source: MIAMI + RWorld
Tropical Isle Homes Sub 3 is a neighborhood in Key Biscayne.
Map unavailable for this listing
Estimated monthly
30-yr fixed
$41,863
/mo
$7,450,000 · 20% down · 7.16%
Principal & interest
$40,311
Home insurance
$1,552
Home price
$7,450,000
Down payment
$1,490,000 · 20%
Interest rate
7.16%
Estimates only. Actual costs vary by lender, credit score, and market conditions.
425 Harbor Dr, Key Biscayne, FL 33149 is currently listed at $7,450,000. That works out to approximately $1,632 per square foot.
This property features 7 bedrooms, 7 full and 2 half bathrooms, 4,565 sq ft of living space.
Based on current MLS data, no HOA fee is listed for this property. We recommend confirming with the seller's disclosure or your agent, as some communities charge fees not reflected in MLS.
425 Harbor Dr, Key Biscayne, FL 33149 is located in Key Biscayne, FL 33149. School assignments are set by the county school board and can change. Verify with the county school district before enrolling.
425 Harbor Dr, Key Biscayne, FL 33149 is situated in the Tropical Isle Homes Sub 3 neighborhood of Key Biscayne, Florida. Scroll to the Location section on this page for a map and nearby places.
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Listed By: One Sotheby's International Realty

All listings featuring the BMLS logo are provided by BeachesMLS, Inc. This information is not verified for authenticity or accuracy and is not guaranteed. Copyright ©2026 BeachesMLS, Inc.
Listing information is provided in part by the MIAMI + RWorld Internet Data Exchange program. IDX information is provided exclusively for consumers' personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed accurate by the MLS. Data last updated Nov 13, 2026 5:18 PM. Equal Housing Opportunity.
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Flat
2020
| Date | Event | Price | Change | $/Sq Ft | Source |
|---|---|---|---|---|---|
| Jun 12, 2026 | Listed for Sale | $7,450,000 | — | $1,632 | MIAMI + RWorld |
| May 2, 2023 | Sold | $6,800,000 | 92% of asking | $1,490 | MIAMI + RWorld |
| Nov 17, 2022 | Listed for Sale | $7,400,000 | — | $1,621 | MIAMI + RWorld |
| Oct 15, 2020 | Sold | $4,050,000 | 90% of asking | $887 | MIAMI + RWorld |
| Oct 6, 2020 | Listed for Sale | $4,490,000 | — | $984 | MIAMI + RWorld |
| Feb 12, 2020 | Sold | $3,840,000 | 87% of asking | $841 | MIAMI + RWorld |
| Sep 30, 2019 | Listed for Sale | $4,390,000 | — | $962 | MIAMI + RWorld |
In ZIP 33149. This list stays on the tightest city market with at least 3 sales.
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