640 N Mashta Dr
Key Biscayne, FL 33149
- 5 Beds
- 4.5 Baths
- 3,673 sqft
5 Beds
4.5 Baths
3,673 sqft
Home Value
Trulia Estimate
$5.36MSince last month
Increased$107K (+2%)Since last year
Increased$547K (+11.4%)Since last sale
Increased$2M (+78.8%)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 +69% in the last 10 years
| Month | Estimated value |
|---|---|
2026 | |
| August 2026 | $5.36M |
| July 2026 | $5.26M |
| June 2026 | $5.36M |
| May 2026 | $5.19M |
| April 2026 | $5.1M |
| March 2026 | $4.98M |
| February 2026 | $4.91M |
| January 2026 | $4.74M |
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 |
|---|---|---|---|---|---|---|---|
0.04 | Single-Family Home | $5,200,000 | 08/11/26 | 3 | 3.5 | 3,343 | |
0.05 | Single-Family Home | $1,200,000 | 06/05/26 | 4 | 4.5 | 3,241 | |
0.36 | Single-Family Home | $3,475,000 | 01/27/26 | 5 | 4.5 | 2,320 | |
0.54 | Single-Family Home | $3,700,000 | 01/27/26 | 5 | 5 | 3,962 | |
0.46 | Single-Family Home | $3,125,000 | 03/09/26 | 5 | 3.5 | 2,429 | |
0.41 | Single-Family Home | $3,500,000 | 01/16/26 | 4 | 3.5 | 2,775 | |
0.35 | Single-Family Home | $4,950,000 | 04/20/26 | 6 | 6 | 3,888 | |
0.08 | Single-Family Home | $14,000,000 | 08/03/26 | 4 | 4.5 | 4,290 | |
0.45 | Single-Family Home | $4,200,000 | 03/27/26 | 6 | 5.5 | 3,436 | |
0.57 | 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 |
|---|---|---|---|---|---|---|
0.03 | $18,500,000 | 4 | 4.5 | 2,255 | For Sale | |
0.06 | $5,346,200 | 4 | 3 | 2,416 | Off Market | |
0.08 | $14,000,000 | 4 | 4.5 | 4,290 | Recently Sold | |
0.05 | $13,368,700 | 7 | 8.5 | 5,043 | Off Market | |
0.06 | $16,800,000 | 4 | 4 | 3,620 | For Sale | |
0.11 | $8,224,400 | 6 | 6.5 | 4,225 | Off Market | |
0.13 | $5,629,800 | 6 | 5 | 3,245 | Off Market | |
0.22 | $4,444,800 | 5 | 5.5 | 3,534 | Off Market | |
0.22 | $9,168,900 | 6 | 6.5 | - | Off Market | |
0.18 | $19,900,000 | 5 | 4 | 3,085 | For Sale | |
0.23 | $3,437,500 | 3 | 2 | 1,915 | Off Market | |
0.25 | $7,716,900 | 6 | 6.5 | 5,299 | Off Market |
Local Information
-- mins to
Home Highlights
Property Type
Single-Family Home
Year Built
1991
Living Area
3,673 sqft
Price/Sqft
$1,460
Parking
Garage
About this House
This single-family home is located at 640 N Mashta Dr, Key Biscayne, FL. 640 N Mashta Dr is in Key Biscayne, FL and in ZIP code 33149. This property has 5 bedrooms, 5 bathrooms and approximately 3,673 sqft of floor space. This property has a lot size of 10000 sqft and was built in 1991.
640 N Mashta Dr, Key Biscayne, FL 33149 is a 5 bedroom, 5 bathroom, 3,673 sqft single-family home built in 1991. It last sold for $3,000,000 on Sep 25, 2020. It is currently off market. The Trulia Estimate is $5,363,000, with a rent estimate of $26,317/month.
Home Details for 640 N Mashta Dr
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Heating & Cooling Heating: ElectricHeating Fuel: Electric |
Levels, Entrance, & Accessibility Stories: 2 |
Interior Details Types of Rooms: Walk In Closet, Family RoomCeiling Fan |
Appliances & Utilities DishwasherDryerRefrigeratorWasher |
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Exterior Home Features Roof: OtherExterior: OtherGardenPatio |
Pool Pool |
Parking & Garage GarageParking Spaces: 2Parking: Garage Attached |
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Year Built Year Built: 1991Year Updated: 1996 |
Property Type / Style Property Type: Single Family Home |
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Units in Building: 1 |
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Lot Area: 10001 sqft |
Price and Tax history
| Date | Event | Price |
|---|---|---|
Sep 25, 2020 Source: MIAMI #A10760812 | Sold | $3,000,000 |
Sep 8, 2020 Source: Agent Provided | Pending | $3,420,000 |
Oct 25, 2019 Source: Agent Provided | PriceChange | $3,420,000 Price decreased by 1% |
Jan 9, 2019 Source: Agent Provided | PriceChange | $3,470,000 Price decreased by 6% |
Apr 10, 2018 Source: Agent Provided | Listed For Sale | $3,675,000 |
Feb 5, 2018 Source: Agent Provided | ListingRemoved | $3,675,000 |
Dec 14, 2017 Source: Agent Provided | PriceChange | $3,675,000 Price decreased by 5% |
Feb 8, 2017 Source: Agent Provided | Listed For Sale | $3,875,000 |
May 6, 2016 Source: Agent Provided | ListingRemoved | $4,300,000 |
Mar 10, 2016 Source: Agent Provided | Listed For Sale | $4,300,000 |
Apr 9, 2012 Source: N/A | Sold | $1,900,000 |
Feb 4, 2012 Source: Agent Provided | PriceChange | $1,980,000 Price decreased by 13% |
Nov 10, 2011 Source: Agent Provided | PriceChange | $2,285,000 Price decreased by 15% |
Aug 17, 2011 Source: Agent Provided | Listed For Sale | $2,690,000 |
Aug 3, 1995 Source: N/A | Sold | $800,000 |
Aug 23, 1994 Source: N/A | Sold | $742,600 |
| Year | Property tax | Tax assessment |
|---|---|---|
| 2025 | $40,256 | $3,853,905 |
Home facts updated by county records
Market trends in Key Biscayne
Last updated July 2026
Avg. sale price
$1.56M
$26.67KMoM
Sale-to-List Price
94.6%
Price per sq ft
$981
$37MoM
Available listings
144
15MoM
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
Frequently asked questions about 640 N Mashta Dr
- What is 640 N Mashta Dr estimated to be worth?Trulia's estimated value for 640 N Mashta Dr in Key Biscayne, FL is $5,363,000.
- What is the price history for 640 N Mashta Dr?640 N Mashta Dr in Key Biscayne, FL last sold for $3,000,000 in September 2020.
- 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's the median sale price in Key Biscayne?The median sale price in Key Biscayne is $1.56M. That is down $26.67K from the prior month.
- Does 640 N Mashta Dr have a pool?Yes, 640 N Mashta Dr in Key Biscayne, FL has a pool.
- Does 640 N Mashta Dr have laundry facilities?Yes, 640 N Mashta Dr in Key Biscayne, FL has in-unit laundry.

