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Mashta Island, 640 S Mashta Dr, Key Biscayne, FL, Florida 33149

$19,500,000
5Beds
5Baths
3,620SqFt

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Details

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Status:
Active
Parking: 2
Size: 3,620 SqFt (336 m2)
Price: $5,387/SqFt ($57,983/m2)
Type: Single Family Home
Built: 1968
MLS Number: A11896953
View: Bay,Ocean
On Site: 11 Days
Updated: 11 Days ago
Page Views: 0
Welcome to your own slice of paradise! Enjoy breathtaking sunsets from your private dock on this waterfront property boasting 100 feet of direct biscayne bay frontage. Ideally located on mashta island. Set on a 15,000 sf lot, the home features 5 beds, 5 baths, including 2 bayfront primary suites with stunning views, impact windows and doors throughout. The open-concept layout flows seamlessly from the living and dining areas to the modern kitchen and out to the pool and entertainment patio, with floor-to-ceiling glass doors that open to blend indoor and outdoor living. Tranquil guest suite upstairs offering privacy and views. It also features an oversized 2-car garage, covered parking, and a spacious driveway for guests. Perfect to move in, renovate, or build your dream waterfront estate.
Features
Bedrooms
  • Bedrooms: 5
Bathrooms
  • Bathrooms: 5
  • Half Bathrooms: No info
Exterior and Lot Features
  • Exterior Features: SecurityHighImpactDoors
  • View: Bay,Ocean
Interior, Heating and Cooling
  • Interior Features: BuiltInFeatures, BedroomOnMainLevel, FirstFloorEntry
  • Equipment / Appliances: Dryer, Dishwasher, Microwave, Washer
  • Heating Description: Central
  • Cooling Description: CentralAir
Building and Construction
  • Floor Description: Hardwood,Tile,Wood
  • Year Built: 1968
  • Year Built Description: Resale
  • Style: Detached,TwoStory
Waterfront and Water Access
  • Waterfront Frontage: Yes
School Information
  • Elementary School: Keybiscayne
  • Middle School: Ponce De Leon
  • Senior High School: Coral Gables
Other Property Info
  • Garage: 2
  • Listing Date: 2025-10-16T19:04:46.000-00:00
  • Directions: East
Taxes, Fees & More
  • Taxes: 81859
  • Parking Description: CircularDriveway, Covered, Driveway

Price History

10/15/2025

Date

Listed

Event

$19.5M

Price

$5,387 ft2 / $57,983 m2

Price Per

Price per square foot and days on website are not provided values and are calculated by Subdivisions.

Listed by Claudia FontecillaDLS International Realty • Buyer Agency Compensation .

Instant Comps

$900/ft²
$2,400/ft²
$3,900/ft²
$5,500/ft²
$19.5M

Unit 640 S Mashta Dr – $5,387/ft²

(+147%) from Closed Medium

$7.9M

Closed Medium $2,183/ft²

Community $/Price Range (Closed) $1025/ft² – $3621/ft²
No Comparable Units Found: We couldn't locate comparable properties at this time. Contact us for a FREE, no-obligation Comparative Market Analysis (CMA) from a licensed RE advisor.
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