425 Harbor Dr
Key Biscayne, FL 33149
$7,450,000
$1,632/ft²
About this home
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.
Property details
Listing
- MLS #
- A12034564
- Status
- For sale
- Listed on
- Jun 12, 2026
- Days on market
- 58 days
- Listing data updated
- Jun 26, 2026
Interior
- Beds
- 7
- Baths
- 8
- Living area
- 4,565 ft²
- Price per ft²
- $1,632/ft²
Building & community
- Type
- Single-family home
- Year built
- 2020
- County
- Miami-Dade
Lot & exterior
- Lot size
- 9,258 ft²
Days on market, price per ft² and the monthly HOA amount are calculated by this site from the MLS data shown; the association fee is normalized to a monthly figure.
True monthly cost
- Mortgage (principal & interest)
- $37,671
- Property taxes (est.)
- $6,829
- Home insurance (est.)
- $600
- Flood insurance (est.)
- —
Estimated total$45,100*/mo
* Some cost lines aren't available yet for this listing; the total shown is incomplete.
Based on 20% down, a 6.5% rate and a 30-year loan, plus this home's estimated Florida carrying costs. All figures are illustrative estimates — not quotes, not financial or insurance advice.
Sources: flood zone — FEMA National Flood Hazard Layer; mortgage, taxes and insurance figures — this site's own estimates; HOA / CDD — as reported for this listing.
What will this home really cost you?
Location
Mortgage calculator
$37,671/moEstimated principal & interest. Taxes, insurance, and HOA are not included. This is an estimate, not a quote or financial advice.
This listing is courtesy of One Sotheby's International Realty.
Mark Chatburn · 305-393-6032 · hello@chatburnliving.com · 305-365-2811
Data deemed reliable, but is not guaranteed accurate by MIAMI REALTORS®.
Similar homes nearby
1 / 6$7,490,000$1,988/ft²
571 Glenridge Rd
Key Biscayne, FL 33149
73 days on market
1 / 63D tour$6,950,000$1,282/ft²
685 Harbor Ln
Key Biscayne, FL 33149
115 days on market
1 / 63D tour$7,950,000$1,908/ft²
545 SABAL PALM
Key Biscayne, FL 33149
366 days on market
1 / 63D tour$6,900,000$1,643/ft²
785 Crandon Blvd
Key Biscayne, FL 33149
68 days on market