$13,551,000
- 7 Beds
- 8.5 Baths
- 5,043 sqft (on 0.34 acres)
660 S Mashta Dr, Key Biscayne, FL 33149
Est. Refi. Payment $92,904/mo*
Refinance Your HomeCurrently Off Market - Sold Mar 28, 2025 for $13,800,000
Home Value
Trulia Estimate
$13.6MSince last month
Increased$162K (+1.2%)Since last year
Decreased$106K (-0.8%)Since last sale
Decreased$249K (-1.8%)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 +64% in the last 10 years
| Month | Estimated value |
|---|---|
2026 | |
| September 2026 | $13.55M |
| August 2026 | $13.39M |
| July 2026 | $13.31M |
| June 2026 | $13.47M |
| May 2026 | $13.35M |
| April 2026 | $13.57M |
| March 2026 | $13.54M |
| February 2026 | $13.45M |
| January 2026 | $13.44M |
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 |
|---|---|---|---|---|---|---|---|
0.12 | Single-Family Home | $14,000,000 | 08/03/26 | 4 | 4.5 | 4,290 | |
0.51 | Single-Family Home | $6,500,000 | 03/31/26 | 7 | 7.5 | 5,528 | |
0.39 | Single-Family Home | $4,950,000 | 04/20/26 | 6 | 6 | 3,888 | |
0.88 | Single-Family Home | $17,500,000 | 07/08/26 | 7 | 7.5 | 6,240 | |
0.75 | Single-Family Home | $21,000,000 | 02/26/26 | 6 | 7 | 8,031 | |
0.49 | Single-Family Home | $4,200,000 | 03/27/26 | 6 | 5.5 | 3,436 | |
0.37 | Single-Family Home | $23,500,000 | 07/06/26 | 3 | 5 | 10,926 | |
0.62 | Single-Family Home | $5,690,000 | 06/15/26 | 6 | 5 | 3,584 |
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 | $16,800,000 | 4 | 4 | 3,620 | For Sale | |
0.08 | $18,500,000 | 4 | 4.5 | 2,255 | For Sale | |
0.09 | $5,344,800 | 4 | 3 | 2,416 | Off Market | |
0.10 | $6,350,000 | 4 | 3 | 2,761 | For Sale | |
0.11 | $8,122,800 | 6 | 6.5 | 4,225 | Off Market | |
0.12 | $14,000,000 | 4 | 4.5 | 4,290 | Recently Sold | |
0.14 | $5,634,900 | 6 | 5 | 3,245 | Off Market | |
0.18 | $19,900,000 | 5 | 4 | 3,085 | For Sale | |
0.21 | $18,726,800 | 5 | 6.5 | 5,226 | Off Market | |
0.26 | $7,590,000 | 6 | 5.5 | 4,043 | For Sale | |
0.27 | $4,368,800 | 5 | 5.5 | 3,534 | Off Market |
Local Information
-- mins to
Home Highlights
Single-Family Home
Built in 1965
0.34 acre lot
5,043 sqft
$2,687/sqft
Open Parking
About this House
What's unique:Heated poolMosaic staircaseWide bay front homeLarge shared balconyUnobstructed viewsAdjacent covered patio
Don't miss this opportunity to own a rarely available wide bay front home on S Mashta Dr featuring 100 ft of water frontage & unobstructed views. This large 2 story home has an eat in kitchen, 3 door wine chiller & separate walk-in pantry/storage area. An adjacent covered patio is separated from the kitchen by multi sliding impact doors that open & stack against each other expanding your entertaining space & bringing the outside in. The primary BR has 2 full baths & 3 walk-in closets. There are an additional 4 BR's & 4 baths on the first floor, one of which has a kitchenette & a separate entrance. A mosaic staircase leads to 2 additional bedrooms w/ensuite baths & a large shared balcony Additional amenities include heated pool, cabana bath & an expansive patio for entertaining.
660 S Mashta Dr, Key Biscayne, FL 33149 is a 7 bedroom, 9 bathroom, 5,043 sqft single-family home built in 1965. It last sold for $13,800,000 on Mar 28, 2025 (19% below the $16,999,000 asking price). This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $13,551,000.
Last check for updates: about 2 hours ago
Listed by Kathy Green, (305) 343-7457
Coldwell Banker Realty
Bought with: Giulietta Ulloa, (305) 710-6620, BHHS EWM Realty
Originating MLS: A-Miami Association of REALTORS
Source: MIAMI, MLS#A11526068

Home Details for 660 S Mashta Dr
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Beds & Baths Number of Bedrooms: 7Number of Bathrooms: 9Number of Bathrooms (full): 8Number of Bathrooms (half): 1 |
Dimensions and Layout Living Area: 5043 Square Feet |
Appliances & Utilities Appliances: Dishwasher, Disposal, Dryer, Electric Range, Refrigerator, Oven, WasherDishwasherDisposalDryerLaundry: Laundry RoomRefrigeratorWasher |
Heating & Cooling Heating: ElectricHas CoolingAir Conditioning: ElectricHas HeatingHeating Fuel: Electric |
Fireplace & Spa No Spa |
Windows, Doors, Floors & Walls Window: Electric Shutters, Impact GlassFlooring: Marble |
Levels, Entrance, & Accessibility Stories: 2Entry Location: First Floor EntryAccessibility: Accessible Full Bath, Accessible Approach with Ramp, Roll-In Shower, Accessible Doors, Accessible Hallway(s), Accessible, Accessibly EquippedFloors: Marble |
View Has a ViewView: Bay |
Security Security: Owned Burglar Alarm |
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Exterior Home Features Roof: OtherPatio / Porch: Deck, PatioFencing: FencedHas a Private Pool |
Parking & Garage No GarageHas Open ParkingParking: Driveway |
Pool Pool: Heated, Pool BathPool |
Frontage WaterfrontWaterfront: Ocean Access, No Fixed Bridges, Seawall, WF/Pool/Ocean Access, BayFrontage Type: Bay/HarborRoad Frontage: Public RoadOn Waterfront |
Water & Sewer Sewer: Public Sewer |
Farm & Range Frontage Length: 100Not Allowed to Raise Horses |
Surface & Elevation Elevation Units: Feet |
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Year Built Year Built: 1965 |
Property Type / Style Property Type: ResidentialProperty Subtype: Single Family ResidenceStructure Type: House, DetachedArchitecture: House,Detached |
Building Building Name: Mashta IslandConstruction Materials: CBS Construction |
Property Information Usage of Home: Unknown/WithheldParcel Number: 2452050080300 |
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Price List Price: $16,999,000 |
Status Change & Dates Off Market Date: Tue Feb 18 2025Possession Timing: Funding |
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MLS Status: Closed |
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Direction & Address City: Key BiscayneCommunity: Mashta Island |
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Building Area Building Area: 6195 Square Feet |
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Association for this Listing: A-Miami Association of REALTORSNo HOA |
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Lot Area: 0.34 acres |
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Contingencies: OtherListing Terms: All Cash, Conventional |
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Mls Number: A11526068Water ViewWater View: Bay |
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Source Internet Entire Listing Display |
Price and Tax history
| Date | Event | Price |
|---|---|---|
Mar 28, 2025 Source: MIAMI #A11526068 | Sold | $13,800,000 |
Feb 18, 2025 Source: MIAMI #A11526068 | Pending | $16,999,000 |
Sep 16, 2024 Source: MIAMI #A11526068 | PriceChange | $16,999,000 Price decreased by 15% |
Apr 24, 2024 Source: MIAMI #A11526068 | PriceChange | $19,999,000 Price decreased by 9% |
Feb 6, 2024 Source: MIAMI #A11526068 | Listed For Sale | $21,950,000 |
Jan 18, 2011 Source: N/A | Sold | $4,875,000 |
Jun 26, 1998 Source: N/A | Sold | $1,487,000 |
| Year | Property tax | Tax assessment |
|---|---|---|
| 2025 | $156,673 | $10,020,831 |
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 660 S Mashta Dr
- What is 660 S Mashta Dr estimated to be worth?Trulia's estimated value for 660 S Mashta Dr in Key Biscayne, FL is $13,551,000.
- What is the price history for 660 S Mashta Dr?660 S Mashta Dr in Key Biscayne, FL last sold for $13,800,000 in March 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 660 S Mashta Dr have air conditioning?Yes, 660 S Mashta Dr in Key Biscayne, FL has air conditioning.
- Does 660 S Mashta Dr have a pool?Yes, 660 S Mashta Dr in Key Biscayne, FL has a pool.

