How do I schedule a tour of 669 S Mashta Drive, Key Biscayne, FL 33149?

Use the Tour button on this listing to request a showing of 669 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 669 S Mashta Drive, Key Biscayne, FL 33149 still available?

669 S Mashta Drive, Key Biscayne, FL 33149 is currently listed as Sold, and has been on the market 38 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 669 S Mashta Drive, Key Biscayne, FL 33149?

With 20% down ($1,159,800) on the $5,799,000 list price and a 30-year fixed loan at an illustrative 6.875% rate, the estimated principal & interest for 669 S Mashta Drive, Key Biscayne, FL 33149 is about $30,476/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 669 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 669 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 669 S Mashta Drive, Key Biscayne, FL 33149?

669 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 669 S Mashta Drive, Key Biscayne, FL 33149?

Often, yes. The right offer on 669 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.

Sold

38 Days on Market

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$5,799,000

669 S Mashta Drive

Key Biscayne, FL 33149

MASHTA ISLAND

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

Bedrooms

Bathrooms

3,382

Living Sq Ft

1960

Year Built

Estimated monthly payment

$30,476 /mo

Principal and interest only, based on $1,159,800 down (20%), a 6.875% 30-year fixed rate. Property taxes, homeowners insurance are not included.

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Listing Snapshot

Price: $5,799,000
Days on Site: 38 Days
Bedrooms: 4
Total Baths: 4
Full Baths: 3
Partial Baths: 1
Living Area: 3,382 sqft
Total Sq Ft: 3,382 sqft
Lot Size: 0.23 Acres
Year Built: 1960
Property Type: Single Family
MLS #: A12033340
Property Tax: $22,013 (2025)
Subdivision: MASHTA ISLAND
County: Miami Dade
Status: Sold
Special Conditions: Listed As Is

About This Property

Located on the exclusive and highly sought-after Mashta Island, this exceptional property offers a rare opportunity to build your dream home or enjoy the existing beautifully refurbished residence. The home features new bathrooms, updated flooring, and tasteful modern finishes throughout. Designed for relaxed Florida living, the spacious covered terrace overlooks a stunning mosaic-tiled pool, creating the perfect setting for entertaining or enjoying the tropical surroundings. A unique opportunity in one of Key Biscayne's most desirable neighborhoods. Easy to show.

Virtual Tour

General Features

Property Type: Single Family
Status: Sold
Year Built: 1960
Number of Stories: 2
Levels: Two
Garage Spaces: 0
Parking: Driveway
Direction Faces: West
Lot Size (Acres): 0.23
Living Sq Ft: 3,382
Total Sq Ft: 3,382
Sewer: Public Sewer
Water Source: Public
Zoning: 2001

Interior Features

Appliances: Dryer / Dishwasher / Disposal / Gas Range / Oven / Refrigerator / Washer
Cooling: Central Air
Heating: Heat Strip
Flooring: Vinyl
Interior Features: Breakfast Area / Bathtub / Dining Area / Separate Formal Dining Room / Dual Sinks / Garden Tub Roman Tub / High Ceilings / Main Level Primary / Split Bedrooms / Soaking Tub / Separate Shower
Windows: Blinds
Total Rooms: 1

Exterior Features

Construction: Block
Roof: Tar Gravel
Exterior Features: Outdoor Living Area / Outdoor Shower
Private Pool: Yes
Pool Features: Above Ground
Patio & Porch: Patio
Lot Features: Sprinklers Automatic
View: Garden

Community & HOA

Security: Smoke Detectors
Pets Allowed: 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 Community

Mashta Island

View Community Details →

Homes for Sale: 2
Under Contract: 0
Median List Price: $17,650,000
Median $/Sq Ft: $6,422
Avg Days on Market: 46

View all 2 homes for sale in Mashta Island →

Frequently Asked Questions

How do I schedule a tour of 669 S Mashta Drive, Key Biscayne, FL 33149?: Use the Tour button on this listing to request a showing of 669 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 669 S Mashta Drive, Key Biscayne, FL 33149 still available?: 669 S Mashta Drive, Key Biscayne, FL 33149 is currently listed as Sold, and has been on the market 38 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 669 S Mashta Drive, Key Biscayne, FL 33149?: With 20% down ($1,159,800) on the $5,799,000 list price and a 30-year fixed loan at an illustrative 6.875% rate, the estimated principal & interest for 669 S Mashta Drive, Key Biscayne, FL 33149 is about $30,476/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 669 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 669 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 669 S Mashta Drive, Key Biscayne, FL 33149?: 669 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 669 S Mashta Drive, Key Biscayne, FL 33149?: Often, yes. The right offer on 669 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 Coldwell Banker 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 June 23, 2026.

$5,799,000