420 Island Drive, Key Biscayne, FL 33149

$12,485,000 · Active

  • 6 beds
  • 8 baths
  • 6,405 sq ft
  • Single Family Residence
  • Built 2017
  • Lot 13,503.6 sq ft
  • MLS# A11812864
  • Cape Florida Sub Sec 1
Photo 1 at 420 Island Drive, Key BiscaynePhoto 2 at 420 Island Drive, Key BiscaynePhoto 3 at 420 Island Drive, Key BiscaynePhoto 4 at 420 Island Drive, Key BiscaynePhoto 5 at 420 Island Drive, Key BiscaynePhoto 6 at 420 Island Drive, Key BiscaynePhoto 7 at 420 Island Drive, Key BiscaynePhoto 8 at 420 Island Drive, Key Biscayne

About this home

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

Features

Schools

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

Presented by

BreakThru Realty · (786) 914-1017

Courtesy of

BHHS EWM Realty · Listing agent: Elena Chacon

Schedule a showing

Call or text BreakThru Realty at (786) 914-1017 or email sales@breakthrurealty.com to see 420 Island Drive.

Questions About 420 Island Drive

How much is 420 Island Drive?
420 Island Drive is listed at $12,485,000, which is about $1,949 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 420 Island Drive?
The listing reports annual property taxes of $88,746 for 2024. 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 420 Island Drive built?
420 Island Drive was built in 2017 and the listing describes its condition as resale. 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 420 Island Drive been on the market?
420 Island Drive has been listed for 481 days, and the asking price has been reduced from $14,000,000. Days on market and price changes are the first signals of how much room there is to negotiate.
Is 420 Island Drive waterfront?
Yes. The listing describes the water as canal front. For a home with dockage, confirm the water depth at low tide, the seawall condition and whether the route to the inlet passes under any fixed bridges before you offer.
Which schools serve 420 Island 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 420 Island 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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A comparable home, 591 N Mashta Drive, Key Biscayne, FL 33149, sold for $14,000,000 in August 2026. Other Key Biscayne neighborhoods include Commodore Club and Ocean Club. Nearby ZIP codes include 33131 and 33129. This property also neighbors Brickell, Coconut Grove, and Miami. Compare it with the Key Biscayne housing market report.