For SaleSingle Family ResidenceActive
544 Warren Ln
Key Biscayne, FL 33149
$8,000,000
76 Days On Site
- 6Beds
- 6Baths5 full, 1 half
- 1,044Sq Ft
- $7,663Per Sq Ft
- 0.1797Acres
- 2026Built
- Subdivision
- Tropical Isle Homes Sub
- County
- Miami-Dade
- MLS®
- A12079811
Overview
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.
Listing Snapshot
- Price
- $8,000,000
- Days On Site
- 76 Days
- Bedrooms
- 6
- Inside Area (SqFt)
- 1,044 sqft
- Total Baths
- 6
- Full Baths
- 5
- Partial Baths
- 1
- Lot Size
- 0.1797 Acres
- Year Built
- 2026
- MLS® Number
- A12079811
- Status
- Active
- Property Tax
- $29,546 (2025)
- HOA/Condo/Coop Fees
- N/A
- Sq Ft Source
- Builder
Property Details
General Features
12 items
- Carport
- 2
- Direction Faces
- Southeast
- Disclosures
- Flood Plain Disclosure
- Levels
- Two
- Parking
- Attached Carport, Driveway, On Street
- Property Sub Type
- Single Family Residence
- Sewer
- Public Sewer
- SqFt Total
- 2,229
- Style
- Detached, TwoStory
- Utilities
- Cable Available
- Water Source
- Public
- Zoning
- 0100
Interior Features
8 items
- Appliances
- Gas Range, Ice Maker
- Cooling
- Central Air, Electric
- Fireplace
- Yes
- Flooring
- Hardwood, Marble, Wood
- Furnished
- Furnished
- Heating
- Electric
- Interior
- Vaulted Ceiling(s), Walk-In Closet(s), Master Downstairs
- Spa
- Yes
Exterior Features
9 items
- Construction Details
- Block
- Exterior
- Outdoor Grill
- Patio And Porch
- Porch
- Pool Features
- In Ground, Private
- Private Pool
- Yes
- Roof
- Concrete
- Spa
- Yes
- View
- Garden, Pool
- Waterview
- Garden, Pool
Community Features
3 items
- Community Features
- Other
- MLS Area
- 52
- Financing Terms Available
- Cash, Conventional, Owner May Carry
Location
544 Warren Ln, Key Biscayne, FL 33149 · 52
Neighborhood & Commute
ZIP Code 33149
- Median household income
- $152,895
- Income per person
- $72,459
- Households
- 5,812
- Average household size
- 2.75
- Median age
- 41.6
Source: Walk Score.
Disclosure: Community information and market data powered by Constellation Data Labs. Information is deemed reliable but not guaranteed.
Schools
- Elementary School
- Keybiscayne
- Middle School
- Ponce De Leon
- High School
- Mast Academy
Price & Status History
- Listing updated with changes from the MLS®
- Listing first seen on site
- Status changed to Active
- Price changed to $8,000,000
Friends & Family
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