How much is 425 Harbor Drive?

425 Harbor Drive is listed at $7,450,000, which is about $1,632 per square foot. The listing page shows comparable active listings and recent closed sales nearby so you can judge the asking price against what buyers have actually paid.

What are the property taxes on 425 Harbor Drive?

The listing reports annual property taxes of $89,673 for 2025. Taxes are reassessed at the sale price after a purchase, so a new owner's bill can differ from the current owner's; use the mortgage calculator on this page for an estimate.

When was 425 Harbor Drive built?

425 Harbor Drive was built in 2020 and the listing describes its condition as . Age matters for insurance and financing in Florida: ask about the roof, the electrical panel and, for a condo built before the current code, the building's structural reserve study.

How long has 425 Harbor Drive been on the market?

425 Harbor Drive has been listed for 103 days. Days on market and price changes are the first signals of how much room there is to negotiate.

Which schools serve 425 Harbor Drive?

The MLS lists Key Biscayne K-8 (elementary), Ponce De Leon (middle), Coral Gables (high). School assignments are set by the district and can change; verify them with the school board before you rely on them.

How do I see 425 Harbor Drive?

Request a showing from this page or call BreakThru Realty and a licensed agent will arrange a private tour, in person or by video, and answer anything the listing leaves out.

425 Harbor Drive, Key Biscayne, FL 33149

$7,450,000 · Active

7 beds
9 baths
4,565 sq ft
Single Family Residence
Built 2020
Lot 9,147.6 sq ft
MLS# A12034564
Tropical Isle Homes Sub 3

Photo 1 at 425 Harbor Drive, Key Biscayne

Photo 2 at 425 Harbor Drive, Key Biscayne

Photo 3 at 425 Harbor Drive, Key Biscayne

Photo 4 at 425 Harbor Drive, Key Biscayne

Photo 5 at 425 Harbor Drive, Key Biscayne

Photo 6 at 425 Harbor Drive, Key Biscayne

Photo 7 at 425 Harbor Drive, Key Biscayne

Photo 8 at 425 Harbor Drive, Key Biscayne

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.

Features

Built-in Features
Elevator
High Ceilings
Kitchen Island
Walk-In Closet(s)
Closet Cabinetry
Storage
Built-in Barbecue
Outdoor Shower
Balcony
Heated
In Ground

Schools

Elementary: Key Biscayne K-8
Middle: Ponce De Leon
High: Coral Gables

Presented by

BreakThru Realty · (786) 914-1017

Courtesy of

One Sotheby's International Realty · Listing agent: Mark P Chatburn

Schedule a showing

Call or text BreakThru Realty at (786) 914-1017 or email sales@breakthrurealty.com to see 425 Harbor Drive.

Questions About 425 Harbor Drive

How much is 425 Harbor Drive?: 425 Harbor Drive is listed at $7,450,000, which is about $1,632 per square foot. The listing page shows comparable active listings and recent closed sales nearby so you can judge the asking price against what buyers have actually paid.
What are the property taxes on 425 Harbor Drive?: The listing reports annual property taxes of $89,673 for 2025. Taxes are reassessed at the sale price after a purchase, so a new owner's bill can differ from the current owner's; use the mortgage calculator on this page for an estimate.
When was 425 Harbor Drive built?: 425 Harbor Drive was built in 2020 and the listing describes its condition as . Age matters for insurance and financing in Florida: ask about the roof, the electrical panel and, for a condo built before the current code, the building's structural reserve study.
How long has 425 Harbor Drive been on the market?: 425 Harbor Drive has been listed for 103 days. Days on market and price changes are the first signals of how much room there is to negotiate.
Which schools serve 425 Harbor Drive?: The MLS lists Key Biscayne K-8 (elementary), Ponce De Leon (middle), Coral Gables (high). School assignments are set by the district and can change; verify them with the school board before you rely on them.
How do I see 425 Harbor Drive?: Request a showing from this page or call BreakThru Realty and a licensed agent will arrange a private tour, in person or by video, and answer anything the listing leaves out.

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501 Bay Lane, Key Biscayne, FL 33149 · $5,990,000 · 5 bd · 5 ba · 4,759 sq ft
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741 Harbor Drive, Key Biscayne, FL 33149 · $7,590,000 · 6 bd · 7 ba · 4,043 sq ft
685 Harbor Lane, Key Biscayne, FL 33149 · $6,950,000 · 5 bd · 6 ba · 5,421 sq ft

Recently Sold Nearby

669 S Mashta Drive, Key Biscayne, FL 33149 · Sold $5,200,000 · 4 bd · 4 ba · 3,382 sq ft
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The 5 bedroom home at 501 Bay Lane, Key Biscayne, FL 33149 is comparable and listed for sale at $5,990,000. Another comparable home, 669 S Mashta Drive, Key Biscayne, FL 33149, sold for $5,200,000 in August 2026. Other Key Biscayne neighborhoods include Ocean Club and Biscayne Key Estates. Nearby ZIP codes include 33131 and 33129. This property also neighbors Brickell, Miami, and Coconut Grove. Compare it with the Key Biscayne housing market report.