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$18,500,000

Listing Price

4beds

4baths

2,255sqft

15,000sqft lot

631 N Mashta Dr, Key Biscayne, FL 33149

Member Features

Find Real Estate Bargain!

  • Full foreclosure details

  • Home value, equity and ownership info

  • Find homes priced below market

  • Get full access with a FREE Account

Already a member?

For Sale

Off Market

Single Family

Home type

8203.99

Price / sqft

1958

Year built

Home Details

BRING ALL OFFERS! Exceptional waterfront opportunity in prestigious Key Biscayne. Set on a 15,000 sq. ft. lot with 100 feet of water frontage, this residence offers open-water views, direct Biscayne Bay access, and no fixed bridges to the ocean. Currently undergoing a complete renovation, it will feature modern finishes, impact windows and doors, new systems, spacious living areas, a chef's kitchen, and luxurious bathrooms. Enjoy a private dock, deep-water access, pool, breathtaking sunsets, and an unmatched boating lifestyle in one of South Florida's most desirable communities One of the most compelling waterfront opportunities currently available in all of Key Biscayne. Perfectly positioned on the exclusive and highly coveted Mashta Island, this exceptional property offers approximately 100 feet of prime waterfront, deep-water dockage, direct Biscayne Bay access, and no fixed bridges to the Atlantic Ocean, creating an unparalleled opportunity for boating enthusiasts and yacht owners. Mashta Island has long been recognized as one of South Florida's most prestigious residential enclaves, offering exceptional privacy, quiet tree-lined streets, oversized waterfront estates, and immediate access to the open waters of Biscayne Bay while remaining only minutes from Brickell, Downtown Miami, Coconut Grove, Coral Gables, Miami Beach, and Miami International Airport. Very few neighborhoods offer this combination of island living, security, boating lifestyle, and proximity to the city

Interior Details

Square Feet
  • 2255

Bedrooms
  • 4

Bathrooms
  • 4

Heating
  • Has Heating:

    No

  • Heating Type:

    N/A

Cooling
  • Has Cooling:

    No

  • Cooling Type:

    N/A

Fuel
  • Has Fuel:

    No

  • Fuel Type:

    N/A

Basement
  • Has Basement:

    No

  • Basement Type:

    N/A

Flooring
  • Has Flooring:

    No

  • Flooring Type:

    N/A

Fireplace
  • Has Fireplace:

    Yes

  • Fireplace Type:

    N/A

Property Details

Lot Size
  • 15000

Water
  • No

Sewer
  • No

Parking
  • Type:

    N/A

  • Location:

    N/A

  • Status:

    N/A

  • Number of Spaces:

    N/A

Deck
  • No

Patio
  • No

Fence
  • No

Pool
  • No

Porch
  • No

Stoop
  • No

Breezeway
  • No

Construction Details

Number of Stories
  • 1

Style
  • N/A

Exterior
  • Combination

Foundation
  • N/A

Roof
  • N/A

Roofing Material
  • N/A

Tax History

Year

Amount

Land

Improvement

Percent Change

Assessment

2020

$72,643

$4,125,000

$272,371

--%

$4,397,371

2019

$68,482

$4,125,000

$272,439

--%

$4,397,439

2018

$70,437

$4,125,000

$272,507

--%

$4,397,507

2017

$88,235

$5,910,000

$272,575

--%

$6,182,575

2016

$86,441

$0

$0

--%

$4,464,333

2014

$75,353

$0

$0

--%

$3,689,532

2013

$61,219

$0

$0

--%

$3,354,120

2011

$50,140

$0

$0

--%

$2,871,685

percent-home-icon

Average Home Price in 33149

Nearby Properties

Zip Code

Price

Bed

Bath

Sqft

Lot

Sold Date

$3,060,030

3 Beds

2 Baths

2,113 Sqft

7,631 Lot (sqft)

Sold 10/18/2026

$3,560,000

5 Beds

4 Baths

2,429 Sqft

7,500 Lot (sqft)

Sold 10/13/2026

$3,582,577

4 Beds

2 Baths

2,304 Sqft

7,666 Lot (sqft)

Sold NaN/NaN/NaN

$18,500,000

4 Beds

4 Baths

2,255 Sqft

15,000 Lot (sqft)

Sold 10/13/2026

percent-home-icon

Calculators

Mortgage

Mortgage Calculator

Calculate your monthly mortgage payments.
Household Income
70,000
$
Home price
18,500,000
$
Down payment
3,700,000
$
Mortgage Rate
6.5
%
Loan Term
Property Tax Rate
1.1
%
Homeowner's Insurance (Annual)
111,000
$
HOA (Monthly)
0
$
PMI
0
$
$119,754
Your Payment
Total Monthly Payment:$119,754
Percent of Income:2053%
Affordable:No

Details for 631 N MASHTA DR

Property Debt

Foreclosure Contact Details