641 S Mashta Dr
Key Biscayne, FL 33149
- 6 Beds
- 7 Baths
- 5,109 sqft
6 Beds
7 Baths
5,109 sqft
Local Information
-- mins to
Description
ONE-OF-A-KIND, smart luxury home offering breathtaking OCEAN AND SUNSET VIEWS from the 3rd floor living areas and 4th level rooftop. Enjoy abundance of private amenities at this modern, 4-levels tropical retreat on exclusive Mashta Island, with 5,100-SF of immaculate interiors, 2,200-SF rooftop with summer kitchen, and secluded backyard with cabana, pool, spa, and full bath! Keyless entry takes you inside a formal lobby with 40-foot atrium, floating staircase with water-fountain, and elevator. Beautiful finishes, Italian closets, 11-ft ceilings, Crestron system. 5 beds plus family room on the 2nd floor, open living/dining/kitchen enclosed with a wrap-around terrace on the 3rd floor, plus a 6th bedroom/office. Corner 10,000-SF lot, manicured grounds, large driveway, 3-car carport!
641 S Mashta Dr, Key Biscayne, FL 33149 is a 6 bedroom, 7 bathroom, 5,109 sqft single-family home built in 2020. It last sold for $6,480,000 on Jun 18, 2021. More recently, it was listed as a rental in August 2020 with an asking price of $30,000 per month. That rental listing was removed on August 26, 2020. It is currently off market. The Trulia Estimate is $8,827,100, with a rent estimate of $44,080/month.
Home Highlights
Parking
No Info
Outdoor
Porch, Patio, Pool
View
No Info
HOA
None
Price/Sqft
No Info
Listed
Less than a day ago
Home Details for 641 S Mashta Dr
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Heating & Cooling Heating: Forced AirAir ConditioningCooling System: CentralHeating Fuel: Forced Air |
Levels, Entrance, & Accessibility Stories: 3Floors: Other |
Interior Details Additional StorageTypes of Rooms: Library, OfficeStorage |
Appliances & Utilities DishwasherDryer |
Fireplace & Spa Hot Tub or Spa |
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Exterior Home Features Roof: OtherExterior: OtherPatioPorch |
Pool Pool |
Parking & Garage Parking Spaces: 6Parking: Off Street |
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Year Built Year Built: 2020Year Updated: 1983 |
Property Type / Style Property Type: Single Family Home |
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Furnished |
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Units in Building: 1 |
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Lot Area: 10000 sqft |
Price History for 641 S Mashta Dr
| Date | Price | Event | Source |
|---|---|---|---|
| 06/18/2021 | $6,480,000 | Sold | MIAMI #A11005370 |
| 05/19/2021 | $7,500,000 | Pending | MIAMI #A11005370 |
| 03/01/2021 | $7,500,000 | Listed For Sale | MIAMI #A11005370 |
| 10/19/2020 | $6,499,000 | ListingRemoved | Agent Provided |
| 08/26/2020 | $30,000 | ListingRemoved | Agent Provided |
| 08/12/2020 | $30,000 | Listed For Rent | Agent Provided |
| 07/10/2020 | $6,499,000 | Listed For Sale | Agent Provided |
| 02/23/2016 | $3,400,000 | Sold | N/A |
| 06/05/2015 | $3,990,000 | ListingRemoved | Agent Provided |
| 04/30/2015 | $3,990,000 | Listed For Sale | Agent Provided |
Market trends in Key Biscayne
Last updated May 2026
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
167
2MoM
Property Tax and Assessment
| Year | 2025 |
|---|---|
| Tax | $93,203 |
| Assessment | $6,398,171 |
Home facts updated by county records
Comparable Sales for 641 S Mashta Dr
Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.12 | Single-Family Home | $4,700,000 | 07/10/25 | 6 | 5 | 3,245 | |
0.48 | Single-Family Home | $6,500,000 | 03/31/26 | 7 | 7.5 | 5,528 | |
0.04 | Single-Family Home | $4,750,000 | 02/04/26 | 4 | 3.5 | 3,382 | |
0.36 | Single-Family Home | $4,950,000 | 04/20/26 | 6 | 6 | 3,888 | |
0.43 | Single-Family Home | $6,350,000 | 07/31/25 | 5 | 5.5 | 3,525 | |
0.20 | Single-Family Home | $18,921,250 | 07/08/25 | 5 | 6.5 | 5,226 | |
0.57 | Single-Family Home | $4,820,000 | 08/15/25 | 6 | 6.5 | 4,165 | |
0.46 | Single-Family Home | $4,200,000 | 03/27/26 | 6 | 5.5 | 3,436 | |
0.59 | Single-Family Home | $5,690,000 | 06/15/26 | 6 | 5 | 3,584 | |
0.56 | Single-Family Home | $3,700,000 | 01/27/26 | 5 | 5 | 3,962 |
Nearby homes
Get a sense of prices in the area by checking nearby homes.Assigned Schools
These are the assigned schools for 641 S Mashta Dr.
What Locals Say about Key Biscayne
At least 116 Trulia users voted on each feature.
94 % Say it's walkable to grocery stores
94 % Say kids play outside
90 % Say it's dog friendly
90 % Say it's walkable to restaurants
85 % Say people would walk alone at night
85 % Say there are sidewalks
79 % Say it's quiet
79 % Say there's holiday spirit
76 % Say they plan to stay for at least 5 years
68 % Say parking is easy
67 % Say streets are well-lit
60 % Say there are community events
58 % Say neighbors are friendly
54 % Say yards are well-kept
52 % Say there's wildlife
50 % Say car is needed
Sourced by Trulia users. Learn more about our methodology.
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