524 Warren Ln

Key Biscayne, FL
$ 3,730,000 Beds 5 Baths 4 Sq 2,700 Virtual Tour
Monthly Estimate* How much can I afford?

Located in one of the most exclusive residential pockets of Key Biscayne, surrounded by multi-million-dollar estates, this beautifully designed 5-bedroom, 4 full bathroom home offers the perfect balance of privacy, functionality, and tropical lifestyle. The layout is thoughtfully distributed with a private primary suite on one side, a separate nanny/guest suite with its own bathroom, and a dedicated wing for the children’s bedrooms—ideal for both family living and entertaining. Just steps from top-rated schools and only 10 minutes from the beach, the property features a stunning outdoor space with a resort-style pool and a charming tiki bar, creating the ultimate South Florida oasis. A rare opportunity to own in a highly sought-after neighborhood where surrounding homes reach $10M+.

Active

  • Price
  • $ 3,730,000
  • City
  • Key Biscayne
  • Bedrooms
  • 5
  • Full Bathrooms
  • 4
  • County
  • Miami-Dade
  • Half Bathrooms
  • 0
  • Area
  • 52
  • Lot Size
  • Zip
  • 33149
  • Sqr Footage
  • 2,700
  • Year Built
  • 1950
  • Taxes
  • $ 22265
  • Style
  • MLS#
  • A11999112
Listed By: This listing is courtesy of Serhant
Data Source: Southeast Florida MLS (SEFMLS)

Features

General

Sewer Public Sewer
Heating Central
Cooling Central Air,Ceiling Fan(s)
Possession Close Of Escrow
Roof Barrel
Appliances Some Gas Appliances,Built-In Oven,Dryer,Dishwasher,Electric Range,Electric Water Heater,Ice Maker,Microwave,Washer
Garage Spaces 1
Patio/Porch Features Patio
Architectural Style Other
Pool Features Concrete,Gunite,In Ground,Pool
Restrictions OK To Lease
Construction Materials Block,Pre-Cast Concrete
Pets Allowed Conditional,Yes
Year Built 1950
View Garden
Property Subtype Single Family Residence
Tax Year 2025
Community Features Laundry Facilities,Park
County Miami-Dade
Property Type Residential
Subdivision Name TROPICAL ISLE HOMES SUB 1
Facing Direction Southwest
Garage Y/N true
Full Baths 4
Special Listing Conditions Listed As-Is
Status Active
High School Coral Gables
City Key Biscayne
Senior Community Y/N false
Zoning Description 0100
MLS Area 52
Lot Size Units Square Feet
Lot Size Square Feet 8136
Listing Terms Cash,Conventional
Elementary School Keybiscayne
Year Built Details Resale
Tax Annual Amount 22265
Middle/Junior High School Ponce De Leon
Lease Considered Y/N false
Virtual Tour https://www.propertypanorama.com/instaview/mia/A11999112
Standard Status Active
Occupancy Type Owner
Property Sub Type Additional Single Family Residence
PostalCity Key Biscayne
Legal Description TROPICAL ISLE HOMES SUB 1ST ADDN PB 50-72 LOT 28 BLK 3 LOT SIZE 81.360 X 100 OR 9816-2200

Interior Features

Interior Amenities Bidet,Bedroom on Main Level,Dining Area,Separate/Formal Dining Room,Dual Sinks,Shower Only,Central Vacuum
Flooring Concrete
Air Conditioning Y/N true
Heating Y/N true
Laundry Features In Garage
Total Bedrooms 5
Total Baths 4

Exterior Features

Exterior Amenities Barbecue,Fence,Lighting,Patio,Storm/Security Shutters
Parking Features Circular Driveway,Golf Cart Garage
Lot Features <1 Acre
Water Source Public,Other
Lot Size Area 8136
Foundation Details Slab
Building Area Total 2740
Private Pool true
Waterfront Y/N false
Covered Spaces 1

Amenities

  • Foreclosure
  • Views
  • Short Sale
  • New Construction
  • Adult 55+
  • Lease To Own
  • No HOA Fees
  • Furnished
  • Primary On Main
  • Air Conditioning
  • Seller Finance
  • Green
  • Fixer Upper
  • Horse
  • Golf
  • Fireplace
  • Deck
  • Garage
  • Basement
  • Pool

Affordability Calculator

$3,786

Per Month

Based on the average sale price from the Miami Beach, FL office

  • Monthly Principal & interest $2,658
  • Monthly Property Taxes $1,062
  • Monthly Home Insurance $67
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Let's determine your purchasing power. Working with my mortgage partner, you'll have the information you need to shop for a home with confidence.

Default based on a 30-year fixed rate of 6.49% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA, or jumbo loans.

Mortgage calculator provided courtesy of Inside Real Estate.

Schools

Elementary School Keybiscayne Elementary School
Middle School Ponce De Leon Middle School
High School Coral Gables High School

Price History

4/11/2026 Listed $3,850,000
5/18/2026 3% - $3,750,000
6/16/2026 1% - $3,730,000

Property vs Zip Code Average in 33149

Price
AVG $9.24M
$3.73M
Taxes
AVG $76,969
$22,265
Year Built
AVG 1986
1950

In The Neighborhood

Areas That We Cover

524 Warren Ln Key Biscayne, FL is a Single Family Home for sale at $3730000 with 2700 sqft and a lot size of Acre(s). 524 Warren Ln Key Biscayne has 5 bedrooms, 4 baths and was built in 1950. The property's zip code is 33149 which is in Key Biscayne, FL

*Information deemed reliable but not guaranteed.

Financial calculator disclaimer: Default based on a 30-year fixed rate of 6.49% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.

Mortgage calculator provided courtesy of Inside Real Estate.

All information deemed reliable, but not guaranteed, and should be independently verified. The real estate information and related content displayed on this site is provided for consumers personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

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Joel Arguello

Joel Arguello

305-384-6502

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