$8,000,000
544 Warren Lane
Key Biscayne, FL 33149
Explore the area: Key Biscayne homes for sale · Miami Dade County real estate
Price Check
How this price compares
- List price
- $8,000,000
- Price per sq ft
- $7,663
- Original price
- Unchanged
- Days on market
- 25
This 6-bedroom single-family home in Tropical Isle Homes Sub is listed at $8,000,000, or $7,663 per square foot. It has been on the market for 25 days.
Estimated monthly payment
$42,043 /mo
Principal and interest only, based on $1,600,000 down (20%), a 6.875% 30-year fixed rate. Property taxes, homeowners insurance are not included.
Customize this estimateListing Snapshot
- Price
- $8,000,000
- Days on Site
- 25 Days
- Bedrooms
- 6
- Total Baths
- 6
- Full Baths
- 5
- Partial Baths
- 1
- Living Area
- 1,044 sqft
- Total Sq Ft
- 2,229 sqft
- Lot Size
- 0.18 Acres
- Year Built
- 2026
- Property Type
- Single Family
- MLS #
- A12079811
- Property Tax
- $29,546 (2025)
- Subdivision
- TROPICAL ISLE HOMES SUB
- County
- Miami Dade
- Status
- Active
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.
MLS media linkGeneral Features
- Property Type
- Single Family
- Status
- Active
- Year Built
- 2026
- Property Condition
- New Construction
- New Construction
- Yes
- Number of Stories
- 2
- Levels
- Two
- Garage Spaces
- 0
- Parking
- Attached Carport / Carport / Driveway / On Street
- Direction Faces
- Southeast
- Lot Size (Acres)
- 0.18
- Living Sq Ft
- 1,044
- Total Sq Ft
- 2,229
- Sewer
- Public Sewer
- Water Source
- Public
- Zoning
- 0100
Interior Features
- Appliances
- Gas Range / Ice Maker
- Cooling
- Central Air / Electric
- Heating
- Electric
- Flooring
- Marble / Wood
- Fireplace
- Yes
- Spa
- Yes
- Interior Features
- Main Level Primary / Vaulted Ceilings / Walk In Closets
- Furnished
- Furnished
Exterior Features
- Construction
- Block
- Roof
- Concrete
- Exterior Features
- Built In Barbecue / Barbecue / Outdoor Living Area
- Private Pool
- Yes
- Pool Features
- In Ground
- Patio & Porch
- Porch
- Lot Features
- Sprinklers Automatic
- View
- Garden / Pool
Community & HOA
- Association Amenities
- Other
- Utilities
- Cable Available
- 55+ Community
- Yes
- Financing Terms
- Cash / Conventional / Owner Will Carry
- Restrictions
- No Restrictions
- MLS Area
- 2520
Schools
- Elementary School
- Key Biscayne K-8
- Middle School
- Ponce De Leon
- High School
- Coral Gables
About the Community
- Homes for Sale
- 2
- Median List Price
- $7,745,000
- Median $/Sq Ft
- $4,825
- Avg Days on Market
- 72
Frequently Asked Questions
- How do I schedule a tour of 544 Warren Lane, Key Biscayne, FL 33149?
- Use the Tour button on this listing to request a showing of 544 Warren Lane, Key Biscayne, FL 33149. Pick a day and time and choose an in-person or video-chat tour, and a Pure Equity agent will confirm your visit, often the same day.
- Is 544 Warren Lane, Key Biscayne, FL 33149 still available?
- 544 Warren Lane, Key Biscayne, FL 33149 is currently listed as Active, and has been on the market 25 days. Status updates directly from the MLS as homes go under contract, so ask us to confirm availability before you plan a visit.
- How much is the monthly payment for 544 Warren Lane, Key Biscayne, FL 33149?
- With 20% down ($1,600,000) on the $8,000,000 list price and a 30-year fixed loan at an illustrative 6.875% rate, the estimated principal & interest for 544 Warren Lane, Key Biscayne, FL 33149 is about $42,043/mo, before property taxes, insurance. Use the payment estimate on this page to adjust the down payment and rate.
- How do I get pre-approved to buy 544 Warren Lane, Key Biscayne, FL 33149?
- Getting pre-approved shows sellers you're a serious buyer and clarifies your true budget before you offer on 544 Warren Lane, Key Biscayne, FL 33149. Contact Pure Equity and we'll connect you with a trusted local lender to review your financing options, no obligation.
- What schools serve 544 Warren Lane, Key Biscayne, FL 33149?
- 544 Warren Lane, Key Biscayne, FL 33149 is zoned for Key Biscayne K-8 (elementary), Ponce De Leon (middle), Coral Gables (high). School assignments and boundaries can change year to year, so confirm current zoning with the local school district before you buy.
- Can I negotiate the price of 544 Warren Lane, Key Biscayne, FL 33149?
- Often, yes. The right offer on 544 Warren Lane, Key Biscayne, FL 33149 depends on how it's priced against comparable single family sales in Key Biscayne, how long it's been listed, and how motivated the seller is. Pure Equity will run the comps and help you craft a competitive, well-supported offer.
Listing courtesy of Duncan Studio Real Estate Division PLLC
Listing information is provided by BeachesMLS, Inc.and is deemed reliable but not guaranteed accurate by the MLS or Pure Equity. Information is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties. © 2026 BeachesMLS, Inc. Last updated August 30, 2026.
$8,000,000
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Listed by James S Duncan, Duncan Studio Real Estate Division PLLC
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Recent Sales
Recently sold homes in Tropical Isle Homes Sub
These are the last 3 recorded closings in Tropical Isle Homes Sub, with the price each home actually sold for rather than what it was listed at. They closed at a median of $1,157 per square foot. The most recent closed on January 27, 2026. Closed sales are what an appraiser and a buyer's agent will look at, so they are the starting point for pricing a home here.
Sold$3,700,000
Sold · January 27, 2026
200 W Mcintyre Street
5 bed · 5 bath · 3,962 sqft · $934/sqft
$297,000 under the asking price
Sold$4,820,000
Sold · August 15, 2025
561 Hampton Lane
6 bed · 6.5 bath · 4,165 sqft · $1,157/sqft
$170,000 under the asking price
Sold$3,726,000
Sold · July 7, 2025
561 Allendale Road
4 bed · 3 bath · 2,473 sqft · $1,507/sqft
$264,000 under the asking price
See every recorded sale in Tropical Isle Homes Sub or find out what your Tropical Isle Homes Sub home is worth.
