$5,694,400
- 6 Beds
- 5 Baths
- 3,245 sqft
551 S Mashta Dr, Key Biscayne, FL 33149
Est. Refi. Payment $38,870/mo*
Refinance Your HomeCurrently Off Market - Sold Jul 10, 2025 for $4,700,000
Home Value
Trulia Estimate
$5.69MSince last month
Increased$153K (+2.8%)Since last year
Increased$620K (+12.2%)Since last sale
Increased$994K (+21.2%)Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.
Trulia Estimate
The of this home's value increased by +97% in the last 10 years
| Month | Estimated value |
|---|---|
2026 | |
| August 2026 | $5.69M |
| August 2026 | $5.68M |
| July 2026 | $5.54M |
| June 2026 | $5.69M |
| May 2026 | $5.47M |
| April 2026 | $5.4M |
| March 2026 | $5.22M |
| February 2026 | $5.19M |
| January 2026 | $5.08M |
2025 | |
2024 | |
2023 | |
2022 | |
2021 | |
2020 | |
2019 | |
2018 | |
2017 | |
2016 | |
Comparable sales
These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.40 | Single-Family Home | $4,950,000 | 04/20/26 | 6 | 6 | 3,888 | |
0.48 | Single-Family Home | $4,200,000 | 03/27/26 | 6 | 5.5 | 3,436 | |
0.53 | Single-Family Home | $5,690,000 | 06/15/26 | 6 | 5 | 3,584 | |
0.07 | Single-Family Home | $14,000,000 | 08/03/26 | 4 | 4.5 | 4,290 | |
0.38 | Single-Family Home | $3,475,000 | 01/27/26 | 5 | 4.5 | 2,320 | |
0.55 | Single-Family Home | $3,700,000 | 01/27/26 | 5 | 5 | 3,962 | |
0.62 | Single-Family Home | $4,400,000 | 04/08/26 | 5 | 5 | 3,230 |
Nearby home prices
Get a sense of expected prices in the area by checking the value of nearby homes.Address | Distance | Price | Bed | Bath | Sqft | Status |
|---|---|---|---|---|---|---|
0.04 | $6,350,000 | 4 | 3 | 2,761 | For Sale | |
0.06 | $19,900,000 | 5 | 4 | 3,085 | For Sale | |
0.08 | $18,434,000 | 5 | 6.5 | 5,226 | Off Market | |
0.06 | $5,381,900 | 4 | 3 | 2,416 | Off Market | |
0.07 | $14,000,000 | 4 | 4.5 | 4,290 | Recently Sold | |
0.11 | $16,800,000 | 4 | 4 | 3,620 | For Sale | |
0.14 | $18,500,000 | 4 | 4.5 | 2,255 | For Sale | |
0.14 | $13,356,100 | 7 | 8.5 | 5,043 | Off Market | |
0.20 | $3,404,700 | 3 | 2 | 1,915 | Off Market | |
0.23 | $4,432,100 | 5 | 5.5 | 3,534 | Off Market | |
0.24 | $12,485,000 | 6 | 7 | 6,405 | For Sale |
Local Information
-- mins to
Home Highlights
Single-Family Home
Built in 1961
3,245 sqft
$1,755/sqft
2 Car Garage
About this House
Your tropical private retreat on exclusive Mashta Island. This 6 bed / 5 bath, 3,245 SF Mediterranean villa sits on a spacious 10,000 SF lot with lush landscaping, a resort-style pool, and a private cabana guest suite. Interiors with soaring 10-foot ceilings flow seamlessly to the outdoors, perfect for entertaining and relaxed island living. Intentionally designed with two primary suites (first floor and second floor) enhancing comfort and privacy. The chef’s kitchen features a gas stove, cooking island, and SubZero refrigerator. Enjoy private balconies, a circular driveway, an attached 2-car garage with laundry, covered porches, and generous storage. Key Biscayne offers the ultimate family lifestyle with world-class amenities and a true sense of community.
551 S Mashta Dr, Key Biscayne, FL 33149 is a 6 bedroom, 5 bathroom, 3,245 sqft single-family home built in 1961. It last sold for $4,700,000 on Jul 10, 2025 (14% below the $5,495,000 asking price). More recently, it was listed as a rental in January 2024 with an asking price of $19,000 per month. That rental listing was removed on January 26, 2024. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $5,694,400.
Last check for updates: about 1 hour ago
Listed by Joan Bruggink, (786) 332-1781
One Sotheby's International Realty
Bought with: Joan Bruggink, (786) 332-1781, One Sotheby's International Realty
Originating MLS: A-Miami Association of REALTORS
Source: MIAMI, MLS#A11776724

Home Details for 551 S Mashta Dr
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Beds & Baths Number of Bedrooms: 6Number of Bathrooms: 5Number of Bathrooms (full): 5 |
Dimensions and Layout Living Area: 3245 Square Feet |
Appliances & Utilities Appliances: Dishwasher, Disposal, Dryer, Gas Range, Refrigerator, WasherDishwasherDisposalDryerLaundry: In GarageRefrigeratorWasher |
Heating & Cooling Heating: CentralHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Central |
Fireplace & Spa Has a Fireplace |
Windows, Doors, Floors & Walls Window: Complete Impact Glass, Skylight(s), BlindsFlooring: Marble |
Levels, Entrance, & Accessibility Stories: 2Entry Location: First Floor EntryFloors: Marble |
View Has a ViewView: Garden |
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Exterior Home Features Roof: Barrel RoofPatio / Porch: PatioFencing: FencedOther Structures: Guest HouseExterior: Lighting, BalconyHas a Private Pool |
Parking & Garage Number of Garage Spaces: 2Number of Covered Spaces: 2Has a GarageHas an Attached GarageHas Open ParkingParking Spaces: 2Parking: Covered,Driveway,Guest,Garage Door Opener |
Pool Pool: In Ground, Pool OnlyPool |
Frontage Not on Waterfront |
Water & Sewer Sewer: Public Sewer |
Farm & Range Not Allowed to Raise Horses |
Surface & Elevation Elevation Units: Feet |
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Year Built Year Built: 1961 |
Property Type / Style Property Type: ResidentialProperty Subtype: Single Family ResidenceStructure Type: House, DetachedArchitecture: Mediterranean |
Building Building Name: Mashta Island A Replat OfConstruction Materials: CBS Construction |
Property Information Usage of Home: Unknown/WithheldParcel Number: 2452050090350 |
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Price List Price: $5,495,000 |
Status Change & Dates Off Market Date: Thu Jul 10 2025Possession Timing: Funding |
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MLS Status: Closed |
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Direction & Address City: Key BiscayneCommunity: Mashta Island A Replat Of |
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Building Area Building Area: 4692 Square Feet |
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Community Features: Beach Club Member Available |
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Association for this Listing: A-Miami Association of REALTORSNo HOA |
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Lot Area: 10000 sqft |
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Contingencies: No ContingenciesListing Terms: All Cash, Conventional |
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Mls Number: A11776724 |
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Beach Club Member AvailableSource Internet Entire Listing Display |
Price and Tax history
| Date | Event | Price |
|---|---|---|
Jul 10, 2025 Source: MIAMI #A11776724 | Sold | $4,700,000 |
Apr 15, 2025 Source: MIAMI #A11776724 | Listed For Sale | $5,495,000 |
Jan 26, 2024 Source: MIAMI #A11518977 | ListingRemoved | |
Jan 22, 2024 Source: MIAMI #A11518977 | Listed For Rent | $19,000 |
Jan 16, 2024 Source: MIAMI #A11408816 | ListingRemoved | |
Nov 7, 2023 Source: MIAMI #A11408816 | PriceChange | $19,500 Price decreased by 7% |
Oct 12, 2023 Source: MIAMI #A11408816 | Listed For Rent | $21,000 |
Oct 12, 2023 Source: Zillow Rentals | ListingRemoved | |
Sep 13, 2023 Source: MIAMI #A11408816 | PriceChange | $22,000 Price decreased by 12% |
Jul 16, 2023 Source: MIAMI #A11408816 | Listed For Rent | $25,000 |
Aug 13, 2019 Source: N/A | Sold | $2,900,000 |
Jan 12, 2017 Source: N/A | Sold | $2,937,500 |
Dec 12, 2016 Source: Agent Provided | Pending | $3,195,000 |
Oct 3, 2014 Source: Agent Provided | ListingRemoved | $12,500 |
Aug 19, 2014 Source: Agent Provided | PriceChange | $12,500 Price decreased by 11% |
Apr 27, 2014 Source: Agent Provided | Listed For Rent | $14,000 |
| Year | Property tax | Tax assessment |
|---|---|---|
| 2025 | $54,871 | $3,773,709 |
Home facts updated by county records
Market trends in Key Biscayne
Last updated August 2026
Avg. sale price
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Sale-to-List Price
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Price per sq ft
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Available listings
142
2MoM
Around this home
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
86 % Say people would walk alone at night
86 % 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.
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections

IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.
Frequently asked questions about 551 S Mashta Dr
- What is 551 S Mashta Dr estimated to be worth?Trulia's estimated value for 551 S Mashta Dr in Key Biscayne, FL is $5,694,400.
- What is the price history for 551 S Mashta Dr?551 S Mashta Dr in Key Biscayne, FL last sold for $4,700,000 in July 2025.
- Is Key Biscayne a buyer's or seller's market?Key Biscayne is currently a buyer's market, based on recent for-sale activity.
- What do residents say about Key Biscayne?Residents describe Key Biscayne, FL as walkable to grocery stores, dog-friendly, and walkable to restaurants. See recently sold homes in Key Biscayne, FL.
- Does 551 S Mashta Dr have air conditioning?Yes, 551 S Mashta Dr in Key Biscayne, FL has air conditioning.
- Does 551 S Mashta Dr have a pool?Yes, 551 S Mashta Dr in Key Biscayne, FL has a pool.

