BISCAYNE KEY ESTATES

690 Warren Ln, Key Biscayne FL 33149

4 beds · 3.5 baths · 3,549 ft²

For Sale · Active Listing

$5,478,000

Est. Payment $29,156/mo

MLS Sheet

4

Bedrooms

3.5

Bathrooms

3,549

Sq. Ft.

2000

Year Built

2

Garage

1

Days on Market

Description

A truly exceptional Miami Modern Tropical residence set on a prime 8,010 SF corner lot, offering 3,549 SF of beautifully curated living space with 4 bedrooms and 3.5 bathrooms. Designed by architect Hervin Romney, a founding member of Arquitectonica, the home reflects a distinctive architectural vision inspired by the organic principles of Frank Lloyd Wright and the expressive forms of Antoni Gaudí, where art, design, and nature seamlessly converge. This residence captivates with its abundance of natural light, soaring high ceilings, fluid open spaces, and harmonious lines that create a sense of warmth, sophistication, and effortless flow throughout the main living areas. The beautifully remodeled kitchen and bar are a true centerpiece, featuring high-end appliances, premium finishes, refined craftsmanship, and a design that balances functionality with striking aesthetics. Step outside into your own private tropical retreat, where lush landscaping, graceful curved terraces, and a stunning swimming pool create an atmosphere of tranquility and escape. This outdoor sanctuary is perfect for both relaxation and entertaining. As an added privilege, the property includes membership to the Key Biscayne Beach Club, offering exclusive access to one of Miami’s most coveted coastal lifestyles. Key Biscayne is renowned for its pristine beaches, charming restaurants, and vibrant yet relaxed atmosphere—delivering a true island lifestyle just minutes from the city.

Facts

MLS#
A12010108
Subdivision
BISCAYNE KEY ESTATES
Property Type
Residential
Property Sub Type
Single Family Residence
Year Built
2000
Lot Size
8,010 ft²
Sq. Ft.
3,549 ft²
Sq. Mt.
330 m²
Price per sq. ft.
$1,544/ft²
Price per sq. mt.
$16,600/m²
Stories
Garage
2 spaces
Pool
Days on Market
1 day
Listed
Apr 30, 2026
Last Updated
May 1, 2026
Price/Lot Sq.Ft.
$684/ft²

Comparable homes

Same ZIP, similar price + bedrooms.

Market insights for Key Biscayne

Live MLS-derived activity. Forecast is a conservative rule-of-thumb estimate — not a guarantee.

Sellers market

May 2026

100/100
Buyers marketSellers market

34

Median days to sold

+4.5%

1-year price forecast (est.)

Price & tax history

From the live MIAMI MLS feed. Older history requires the ListingHistory resource (not yet enabled).

4/30/2026Listed for sale$5,478,000

History reflects fields present on the live MLS record. Full multi-year history requires the MIAMI ListingHistory resource (not yet enabled).

Location

690 Warren Ln, Key Biscayne FL 33149Directions

GreatSchools Summary Ratings

Public + private K-12 schools within 5 miles of this listing.

GreatSchoolsData provided by GreatSchools.org © 2026. All rights reserved.

Estimated Monthly Payment

$33,871/mo

Principal & Interest

$29,156

Property Tax

$4,565

Insurance

$150

HOA

$0

20% ($1,095,600)
7.00%
30 years
1.00% (FL avg ~1.0%)
$0/mo
$150/mo

Estimates only. Actual payment depends on credit, lender, insurance carrier, and FL/Miami-Dade specifics. Contact Rangely for a precise quote.

Rangely Adames

Rangely Adames

Sales Associate | Sunland Group

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