481 S Mashta Drive, Key Biscayne, FL 33149

Local realty services provided by:Better Homes and Gardens Real Estate Florida 1st
481 S Mashta Drive,Key Biscayne, FL 33149
$19,900,000
  • 5 Beds
  • 7 Baths
  • 5,940 sq. ft.
  • Single family
  • Active
Listed by: brigitte nachtigall, jorge boj
Office: one sotheby's international realty
MLS#:A11779615
Source:SEFMLS

Price summary

  • Price:$19,900,000
  • Price per sq. ft.:$2,329.12

About this home

Offering approximately 8,500 square feet of construction, this spectacular waterfront estate on coveted Mashta Island is a rare expression of space, privacy, and coastal elegance. Fully remodeled and designed for effortless indoor-outdoor living, this three-level contemporary residence enjoys direct ocean access, panoramic views of Smugglers Cove and Biscayne Bay, and constant ocean breezes that create a true sense of serenity. Set on a 17,012-square-foot lot in one of Key Biscayne’s most exclusive and tranquil enclaves, the property is surrounded by water, light, and lush tropical landscaping, offering remarkable privacy and a peaceful island atmosphere. The residence features 8,544 square feet of total area, including garage and terraces, with expansive open living spaces, refined finishes, abundant natural light, and impeccable craftsmanship throughout. The flexible floor plan allows for effortless reconfiguration to accommodate additional rooms and customized living areas.

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Home facts

  • Year built:2017
  • Listing ID #:A11779615
  • Updated:February 14, 2026 at 10:48 AM

Rooms and interior

  • Bedrooms:5
  • Total bathrooms:7
  • Full bathrooms:6
  • Half bathrooms:1
  • Living area:5,940 sq. ft.

Heating and cooling

  • Cooling:Electric
  • Heating:Electric

Structure and exterior

  • Roof:Barrel
  • Year built:2017
  • Building area:5,940 sq. ft.
  • Lot area:0.39 Acres

Schools

  • High school:Mast Academy
  • Elementary school:Keybiscayne

Utilities

  • Water:Public
  • Sewer:Public Sewer

Finances and disclosures

  • Price:$19,900,000
  • Price per sq. ft.:$2,329.12
  • Tax amount:$84,924 (2024)
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