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Case files · 2 November 2026
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Josh Stein, Miami real estate associateJosh Stein

This home has sold.

House · Key Biscayne

$5,200,000

669 S Mashta Drive, Key Biscayne, FL

  • Beds4
  • Baths3.5
  • Sq ft3,382
  • Price per sq ft$1,538
  • TypeHouse
  • StatusSold
Listing courtesy of Coldwell Banker Realty

About this home

Located on the exclusive and highly sought-after Mashta Island, this exceptional property offers a rare opportunity to build your dream home or enjoy the existing beautifully refurbished residence. The home features new bathrooms, updated flooring, and tasteful modern finishes throughout. Designed for relaxed Florida living, the spacious covered terrace overlooks a stunning mosaic-tiled pool, creating the perfect setting for entertaining or enjoying the tropical surroundings. A unique opportunity in one of Key Biscayne's most desirable neighborhoods. Easy to show.

Area
Key Biscayne
MLS #
A12033340
Listing agent
Maureen Jauregui
Sold for
$5,200,000
Sold on
August 11, 2026
Living area (m²)
314 m²
Price per m²
$16,555
Property tax (per year)
$22,013 (2025)
Year built
1960
Floors in the building
2
Pets
Allowed
Private pool
Yes
Flooring
Vinyl
View
Garden
Listed
June 5, 2026

Interior features

  • Breakfast Area
  • Bathtub
  • Dining Area
  • Separate Formal Dining Room
  • Dual Sinks
  • Garden Tub Roman Tub
  • High Ceilings
  • Main Level Primary
  • Split Bedrooms
  • Soaking Tub
  • Separate Shower

Exterior features

  • Outdoor Living Area
  • Outdoor Shower

Parking features

  • Driveway

Appliances

  • Dryer
  • Dishwasher
  • Disposal
  • Gas Range
  • Oven
  • Refrigerator
  • Washer

Price and status history

  1. Listed for $5,799,000
  2. Under contract
  3. Sold for $5,200,000

From the MLS listing date, original price, latest price change and status dates. The feed does not list every change in between.

Location

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Similar homes in Key Biscayne

6 listings

Listing information is deemed reliable but is not guaranteed and is provided exclusively for consumers' personal, non-commercial use. Data is supplied by the MLS and may be subject to change or withdrawal without notice.

Last updated August 19, 2026, 6:47 pm

Planted by IDX Bloom

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