How do I schedule a tour of 551 S Mashta Drive, Key Biscayne, FL 33149?

Use the Tour button on this listing to request a showing of 551 S Mashta Drive, Key Biscayne, FL 33149. Pick a day and time and choose an in-person or video-chat tour, and a Pure Equity Realty agent will confirm your visit, often the same day.

Is 551 S Mashta Drive, Key Biscayne, FL 33149 still available?

551 S Mashta Drive, Key Biscayne, FL 33149 is currently listed as Sold, and has been on the market 55 days. Status updates directly from the MLS as homes go under contract, so ask us to confirm availability before you plan a visit.

How much is the monthly payment for 551 S Mashta Drive, Key Biscayne, FL 33149?

With 20% down ($1,099,000) on the $5,495,000 list price and a 30-year fixed loan at an illustrative 6.875% rate, the estimated principal & interest for 551 S Mashta Drive, Key Biscayne, FL 33149 is about $28,879/mo, before property taxes, insurance. Use the payment estimate on this page to adjust the down payment and rate.

How do I get pre-approved to buy 551 S Mashta Drive, Key Biscayne, FL 33149?

Getting pre-approved shows sellers you're a serious buyer and clarifies your true budget before you offer on 551 S Mashta Drive, Key Biscayne, FL 33149. Contact Pure Equity Realty and we'll connect you with a trusted local lender to review your financing options, no obligation.

What schools serve 551 S Mashta Drive, Key Biscayne, FL 33149?

551 S Mashta Drive, Key Biscayne, FL 33149 is zoned for Key Biscayne K-8 (elementary), Ponce De Leon (middle), Coral Gables (high). School assignments and boundaries can change year to year, so confirm current zoning with the local school district before you buy.

Can I negotiate the price of 551 S Mashta Drive, Key Biscayne, FL 33149?

Often, yes. The right offer on 551 S Mashta Drive, Key Biscayne, FL 33149 depends on how it's priced against comparable single family sales in Key Biscayne, how long it's been listed, and how motivated the seller is. Pure Equity Realty will run the comps and help you craft a competitive, well-supported offer.

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Sold

55 Days on Market

All Listings

$5,495,000

551 S Mashta Drive

Key Biscayne, FL 33149

MASHTA ISLAND A REPLAT OF

Explore the area: Key Biscayne homes for sale · Miami Dade County real estate

Bedrooms

Bathrooms

3,245

Living Sq Ft

1961

Year Built

Estimated monthly payment

$28,879 /mo

Principal and interest only, based on $1,099,000 down (20%), a 6.875% 30-year fixed rate. Property taxes, homeowners insurance are not included.

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Listing Snapshot

Price: $5,495,000
Days on Site: 55 Days
Bedrooms: 6
Total Baths: 5
Full Baths: 5
Partial Baths: 0
Living Area: 3,245 sqft
Total Sq Ft: 4,692 sqft
Lot Size: 0.23 Acres
Year Built: 1961
Property Type: Single Family
MLS #: A11776724
Property Tax: $50,906 (2024)
Subdivision: MASHTA ISLAND A REPLAT OF
County: Miami Dade
Status: Sold
Special Conditions: Listed As Is

About This Property

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.

Virtual Tour

General Features

Property Type: Single Family
Status: Sold
Year Built: 1961
Property Condition: Resale
Number of Stories: 2
Levels: Two
Garage Spaces: 2
Attached Garage: Yes
Parking: Attached / Covered / Driveway / Garage / Garage Door Opener / Guest
Direction Faces: South
Lot Size (Acres): 0.23
Living Sq Ft: 3,245
Total Sq Ft: 4,692
Sewer: Public Sewer
Water Source: Public
Zoning: 2001

Interior Features

Appliances: Dryer / Dishwasher / Disposal / Gas Range / Refrigerator / Washer
Cooling: Central Air
Heating: Central
Flooring: Marble
Fireplace: Yes
Interior Features: Breakfast Area / Bathtub / Dual Sinks / Eat In Kitchen / Garden Tub Roman Tub / Kitchen Island / Main Level Primary / Multiple En Suite Bathrooms / Pantry / Split Bedrooms / Soaking Tub / Separate Shower / Upper Level Primary / Walk In Closets
Laundry: In Garage
Windows: Blinds / Skylights
Total Rooms: 2
Furnished: Unfurnished

Exterior Features

Construction: Block
Roof: Barrel
Exterior Features: Balcony / Lighting / Outdoor Living Area
Architectural Style: Mediterranean
Private Pool: Yes
Pool Features: In Ground
Patio & Porch: Open / Patio / Balcony
View: Garden

Community & HOA

Association Amenities: Beach Rights
Utilities: Cable Available
Pets Allowed: No Pet Restrictions / Yes
Financing Terms: Cash / Conventional
Restrictions: No Restrictions
MLS Area: 2520

Schools

Elementary School: Key Biscayne K-8
Middle School: Ponce De Leon
High School: Coral Gables

About the Area

Key Biscayne

View Key Biscayne Real Estate →

Browse Key Biscayne homes for sale across every neighborhood and price point in Miami-Dade. Available homes span single-family, townhome, and condo segments throughout the city. Key Biscayne includes gated golf communities, 55+ active adult neighborhoods, waterfront estates, and newer master-planned subdivisions. HOA fees vary by community type, from modest maintenance fees in non-gated subdivisions to higher dues in full-amenity country clubs. The city sits within Miami-Dade, offering access to South Florida beaches, major employment centers, and healthcare hubs. For current Miami-Dade market data, see Florida Realtors' monthly statistics. Browse the latest Key Biscayne listings below. Then connect with a Pure Equity Realty agent to schedule a private showing.

Homes for Sale: 170
Under Contract: 24
Median List Price: $2,600,000
Median Sale Price (August): $1,550,000
Median $/Sq Ft: $1,164
Avg Days on Market: 115

View all 170 homes for sale in Key Biscayne →

Frequently Asked Questions

How do I schedule a tour of 551 S Mashta Drive, Key Biscayne, FL 33149?: Use the Tour button on this listing to request a showing of 551 S Mashta Drive, Key Biscayne, FL 33149. Pick a day and time and choose an in-person or video-chat tour, and a Pure Equity Realty agent will confirm your visit, often the same day.
Is 551 S Mashta Drive, Key Biscayne, FL 33149 still available?: 551 S Mashta Drive, Key Biscayne, FL 33149 is currently listed as Sold, and has been on the market 55 days. Status updates directly from the MLS as homes go under contract, so ask us to confirm availability before you plan a visit.
How much is the monthly payment for 551 S Mashta Drive, Key Biscayne, FL 33149?: With 20% down ($1,099,000) on the $5,495,000 list price and a 30-year fixed loan at an illustrative 6.875% rate, the estimated principal & interest for 551 S Mashta Drive, Key Biscayne, FL 33149 is about $28,879/mo, before property taxes, insurance. Use the payment estimate on this page to adjust the down payment and rate.
How do I get pre-approved to buy 551 S Mashta Drive, Key Biscayne, FL 33149?: Getting pre-approved shows sellers you're a serious buyer and clarifies your true budget before you offer on 551 S Mashta Drive, Key Biscayne, FL 33149. Contact Pure Equity Realty and we'll connect you with a trusted local lender to review your financing options, no obligation.
What schools serve 551 S Mashta Drive, Key Biscayne, FL 33149?: 551 S Mashta Drive, Key Biscayne, FL 33149 is zoned for Key Biscayne K-8 (elementary), Ponce De Leon (middle), Coral Gables (high). School assignments and boundaries can change year to year, so confirm current zoning with the local school district before you buy.
Can I negotiate the price of 551 S Mashta Drive, Key Biscayne, FL 33149?: Often, yes. The right offer on 551 S Mashta Drive, Key Biscayne, FL 33149 depends on how it's priced against comparable single family sales in Key Biscayne, how long it's been listed, and how motivated the seller is. Pure Equity Realty will run the comps and help you craft a competitive, well-supported offer.

Listing courtesy of One Sotheby's International Realty

Listing information is provided by BeachesMLS, Inc.and is deemed reliable but not guaranteed accurate by the MLS or Pure Equity Realty. Information is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties. © 2026 BeachesMLS, Inc. Last updated July 1, 2026.

$5,495,000