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524 Warren Ln, Key Biscayne FL 33149

House For Sale
$3,750,000

BTC: 59.52380952

ETH: 2,147.76632302

-$100K (2026/05/18)
54 days
5 bds
4 ba
2,700 sqft

Overview

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+.

Location

Details

Type:
Residential
Parking:
Circular Driveway / Golf Cart Parking
Year Built:
1950
Lot:
8136 Square Feet
Heating:
Central
Price/sqft:
$1,389
Cooling:
Ceiling Fan(s) / Central Air
HOA:
No Data

Valuation

Our model vs. what's actually selling nearby.
Estimate
$1,995,000
$1.3M – $3.2M
Confidence Low
List vs. estimate
$1.8M above estimate
List $3,750,000 · +88.0%
Our model says this listing is priced above recent comparable activity. Room to negotiate.
Price per sq ft
$1,388
-27.9% vs. city median $1,925
Based on
5 MLS comparables
+ 30 public-records sales within 0.5 mi
Median actual sale: $2.8M
Median of recent comparable listings. Sold comps use closing price, active listings use list price.

Highlights

Annual tax
$22,265
2025
Pool
In Ground
View
Garden
Garage
1 car garage
Pets
Restrictions Or Possible Restrictions
All facts and features
  • Flooring

    • Concrete

    Heating

    • Central

    Cooling

    • Ceiling Fan(s)

    • Central Air

    Appliances

    • Dishwasher

    • Dryer

    • Electric Water Heater

    • Ice Maker

    • Microwave

    • Electric Range

    • Wall Oven

    • Washer

    Other interior features

    • Dome Kitchen

    • Family Room

    • Separate Guest/In-Law Quarters

    • Utility/Laundry In Garage

    Bedrooms and bathrooms

    • Bedrooms: 5

    • Full bathrooms: 4

  • Parking

    • Circular Driveway

    • Golf Cart Parking

    Property

    • Exterior Features: Barbeque / Lighting

    Lot

    • Lot: 8136 Square Feet

    Other Property Information

    • Parcel Number: 24-42-32-004-0220

    • Zoning: 0100

  • Type and style

    • Property Type: Residential

    • Property Sub Type: Single Family Residence

  • Other financial information

    • Annual tax amount: $22,265

  • Source details

    • MLS ID: A11999112

    Other facts

    • Construction Materials: Concrete Block Construction / Pre-Cast Concrete Construction / Slab Construction

    • Laundry Features: In Garage

    • Lot Features: 3/4 To Less Than 1 Acre Lot

    • Patio And Porch Features: Patio

    • Pool Features: In Ground / Concrete / Gunite

    • Window Features: Hurricane Shutters

    • Direction Faces: Southwest

    • Architectural Style: Attached / Other

    • Garage Spaces: 1

    • Garage: Yes

    • Living Area: 2700

    • Water Source: Municipal Water / Other

    • Subdivision Name: TROPICAL ISLE HOMES SUB 1

Private inquiry
Talk to the advisor on this listing.
Floor plans, HOA docs, off-market comparables, scheduling a private showing — one message, direct to the local specialist.

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The multiple listing information is provided by the Miami Association of REALTORS® from a copyrighted compilation of listings. The compilation of listings and each individual listing are ©2026-present Miami Association of REALTORS®. All Rights Reserved. The information provided is for consumers' personal, noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. All properties are subject to prior sale or withdrawal. All information provided is deemed reliable but is not guaranteed accurate, and should be independently verified. Listing courtesy of: Serhant