544 Warren Ln, Key Biscayne FL 33149, photo 1
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$8,000,000

Single Family ResidenceActive
⏱️ Listed today
6Beds
6Baths
1,044Sq Ft
2026Built

544 Warren Ln, Key Biscayne FL 33149

MLS #A12079811

About This Property

New construction, this extraordinary custom Cape Dutch residence is a masterwork of timeless design, brought to life by Duncan and Heuser Design and Development, with interiors curated by James Duncan. Every detail, from the graceful gabled facade to the refined finishes within, reflects a rare devotion to craftsmanship and enduring elegance. Offering six generously proportioned bedrooms and six and a half beautifully appointed bathrooms, this home balances gracious scale with warm, livable comfort. Soaring ceilings, thoughtfully placed windows, and an effortless flow between rooms create a sense of light and openness throughout, while curated materials and bespoke millwork lend a distinctly luxurious character to every space. This is more than a house; it is a legacy residence, designed to be lived in beautifully for generations. A truly rare offering for the discerning buyer seeking timeless architecture, exceptional interiors, and uncompromising quality throughout.

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Marie I. Sanjurjo
Licensed Broker
Blue Mar Real Estate Group
📞 (305) 680-5672💬 WhatsApp Marie✉️ [email protected]

About Key Biscayne

Key Biscayne is a barrier island community just a bridge ride from Brickell, offering an island lifestyle wrapped around Crandon Park, Cape Florida State Park, and the Crandon Golf Course. The village is known for its safety, top-rated schools, and walkable pace, with residents ranging from young families to international buyers seeking secondary residences. Limited inventory and tight geography keep prices premium relative to mainland Miami.

Explore Key Biscayne📊 Key Biscayne market report

Property Details

Property Type

Single Family Residence

Year Built

2026

Living Area

1,044 sq ft

Lot Size

7,828 sq ft

Bedrooms

6

Bathrooms

6

Pool

No

Waterfront

No

Cooling

Central Air, Electric

Heating

Electric

Roof Type

Concrete

Flooring

Marble, Wood

Construction

Concrete Block Construction

Style

Detached, Two Story

HOA Fee

None

Annual Taxes

$29,546 (2025)

Days on Market

0

MLS #

A12079811

Features & Amenities

Interior

First Floor EntryVaulted Ceiling(s)Walk-In Closet(s)Other

Appliances

Gas RangeIce Maker

Exterior

Built-In Grill

Community

Additional Amenities

Other

Attached CarportDrivewayOn Street

Nearby Schools

Assigned public schools pulled from Miami-Dade County Public Schools’s official attendance-boundary data. Verify current boundaries with MDCPS before buying — zones can change year to year.

Assigned Public Schools
Elementary
Key Biscayne K-8 Center
Grades PK-8
150 W McIntire St., Key Biscayne 33149
Middle
Ponce de Leon MS
Grades 6-8
5801 Augusto St., Coral Gables 33146
High
Coral Gables Senior High
Grades 9-12
450 Bird Rd., Coral Gables 33146
Private Schools Within 5 Miles
Key Biscayne Presbyterian School0.6 mi
160 Harbor Dr, Key Biscayne
St Christophers - By-The-Sea Montessori School0.6 mi
95 Harbor Dr, Key Biscayne
St Agnes Academy0.6 mi
122 Harbor Dr, Key Biscayne
Immaculata-La Salle High School4.4 mi
3601 S Miami Ave, Miami
La Prima Casa Montessori - Brickell Campus4.8 mi
1770 Brickell Ave, Miami
Ransom Everglades Middle School4.9 mi
2045 S Bayshore Dr, Miami
Gordon Schools of Beth David Congregation5.0 mi
2625 SW 3rd Ave, Miami
Cherry Blossom Learning Center5.0 mi
2933 SW 3rd Ave, Miami

School data source: Miami-Dade County Open Data Hub

Location

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City

Key Biscayne

State

FL

ZIP Code

33149

County

Miami-Dade County

Subdivision

TROPICAL ISLE HOMES SUB

$8,000,000
544 Warren Ln, Key Biscayne FL 33149
6Beds
6Baths
1,044Sq Ft
📞 (305) 680-5672💬 WhatsApp
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544 Warren Ln, Key Biscayne FL 33149$8,000,000

Listing provided by James Duncan at Duncan Studio Real Estate Division PLLC. Data from Miami Association of REALTORS®. All information deemed reliable but not guaranteed. Listing #A12079811.