$8,000,000
6 Beds
5.5 Baths
1,044 sqft
544 Warren Ln, Key Biscayne, FL 33149
Est. Mortgage $53,640/mo*
Get Pre-QualifiedWe estimate this home will sell faster than 91% nearby.
Home Highlights
Single-Family Home
Built in 2026
$7,663/sqft
Open Parking
Local Information
- Map ViewExplore the area around 544 Warren Ln.
- Schools2 Preschool Schools1 Elementary School2 Middle Schools1 High School
- Shop & Eat
-- mins to
About this House
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.
Last check for updates: about 4 hours ago
Listing courtesy of James Duncan, (305) 979-2520
Duncan Studio Real Estate Division PLLC
Rocio Figueroa, (305) 815-3688
Duncan Studio Real Estate Division PLLC
Originating MLS: A-Miami Association of REALTORS
Source: MIAMI, MLS#A12079811
Also Listed on MIAMI.
We estimate this home will sell faster than 91% nearby.
Home Details for 544 Warren Ln
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Beds & Baths Number of Bedrooms: 6Number of Bathrooms: 6Number of Bathrooms (full): 5Number of Bathrooms (half): 1 |
Dimensions and Layout Living Area: 1044 Square Feet |
Appliances & Utilities Appliances: Gas Range, Ice Maker |
Heating & Cooling Heating: ElectricHas CoolingAir Conditioning: Central Air,ElectricHas HeatingHeating Fuel: Electric |
Fireplace & Spa Has a FireplaceHas a Spa |
Windows, Doors, Floors & Walls Window: Clear Impact GlassDoor: High Impact DoorsFlooring: Marble, Wood |
Levels, Entrance, & Accessibility Stories: 2Entry Location: First Floor EntryFloors: Marble, Wood |
View Has a ViewView: Garden, Pool |
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Exterior Home Features Roof: ConcretePatio / Porch: Open PorchExterior: Built-in BarbecueHas a Private Pool |
Parking & Garage Number of Carport Spaces: 2Number of Covered Spaces: 2Has a CarportNo GarageHas Open ParkingParking Spaces: 2Parking: Attached Carport,Driveway,On Street |
Pool Pool: In Ground, Pool OnlyPool |
Frontage Not on Waterfront |
Water & Sewer Sewer: Public Sewer |
Farm & Range Not Allowed to Raise Horses |
Surface & Elevation Elevation Units: Feet |
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Days on Market: 5 |
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Year Built Year Built: 2026 |
Property Type / Style Property Type: ResidentialProperty Subtype: Single Family ResidenceStructure Type: House, DetachedArchitecture: House,Detached |
Building Building Name: Tropical Isle Homes SubConstruction Materials: Concrete Block ConstructionIs a New Construction |
Property Information Condition: New ConstructionParcel Number: 2452050020160 |
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Price List Price: $8,000,000Price Per Sqft: $7,663 |
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MLS Status: Active |
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Direction & Address City: Key BiscayneCommunity: Tropical Isle Homes Sub |
School Information Elementary School: KeybiscayneJr High / Middle School: Ponce De LeonHigh School: Mast Academy |
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Listing Agent Listing ID: A12079811 |
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Building Area Building Area: 2229 Square Feet |
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Community Features: Additional Amenities |
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Association for this Listing: A-Miami Association of REALTORSNo HOA |
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Lot Area: 7828 sqft |
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Listing Terms: All Cash, Conventional, Owner Will Carry |
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Furnished |
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Mls Number: A12079811 |
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Additional AmenitiesSource Internet Entire Listing Display |
Around this home
What Locals Say about Key Biscayne
At least 116 Trulia users voted on each feature.
94 % Say it's walkable to grocery stores
94 % Say kids play outside
90 % Say it's dog friendly
90 % Say it's walkable to restaurants
86 % Say people would walk alone at night
86 % Say there are sidewalks
79 % Say it's quiet
79 % Say there's holiday spirit
76 % Say they plan to stay for at least 5 years
68 % Say parking is easy
67 % Say streets are well-lit
60 % Say there are community events
58 % Say neighbors are friendly
54 % Say yards are well-kept
52 % Say there's wildlife
50 % Say car is needed
Sourced by Trulia users. Learn more about our methodology.
Market trends in Key Biscayne
Last updated July 2026
Avg. sale price
$1.56M
$26.67KMoM
Sale-to-List Price
94.6%
Price per sq ft
$981
$37MoM
Available listings
144
15MoM
Home Value
Trulia Estimate
$7.6MSince last month
Increased$5M (+155%)Since last year
Increased$5M (+207.2%)Since last sale
Increased$7M (+600.1%)Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.
Trulia Estimate
The of this home's value increased by +322% in the last 10 years
| Month | Estimated value |
|---|---|
2026 | |
| September 2026 | $7.6M |
| August 2026 | $7.93M |
| July 2026 | $2.98M |
| June 2026 | $2.93M |
| May 2026 | $2.77M |
| April 2026 | $2.67M |
| March 2026 | $2.63M |
| February 2026 | $2.56M |
| January 2026 | $2.57M |
2025 | |
2024 | |
2023 | |
2022 | |
2021 | |
2020 | |
2019 | |
2018 | |
2017 | |
2016 | |
Comparable sales
These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
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0.08 | Single-Family Home | $4,200,000 | 03/27/26 | 6 | 5.5 | 3,436 | |
0.18 | Single-Family Home | $3,475,000 | 01/27/26 | 5 | 4.5 | 2,320 | |
0.10 | Single-Family Home | $4,400,000 | 04/08/26 | 5 | 5 | 3,230 | |
0.19 | Single-Family Home | $3,125,000 | 03/09/26 | 5 | 3.5 | 2,429 | |
0.35 | Single-Family Home | $625,000 | 04/09/26 | 6 | 6 | 4,142 | |
0.21 | Single-Family Home | $2,600,000 | 09/19/25 | 4 | 3 | 1,570 | |
0.11 | Single-Family Home | $3,700,000 | 01/27/26 | 5 | 5 | 3,962 | |
0.11 | Single-Family Home | $3,500,000 | 01/16/26 | 4 | 3.5 | 2,775 | |
0.17 | Single-Family Home | $4,950,000 | 04/20/26 | 6 | 6 | 3,888 | |
0.13 | Single-Family Home | $2,600,000 | 06/29/26 | 3 | 2 | 1,333 |
Nearby home prices
Get a sense of expected prices in the area by checking the value of nearby homes.Address | Distance | Price | Bed | Bath | Sqft | Status |
|---|---|---|---|---|---|---|
0.03 | $5,995,000 | 5 | 5.5 | 3,762 | For Sale | |
0.02 | $3,629,800 | 4 | 3 | 2,473 | Off Market | |
0.02 | $3,730,000 | 5 | 4 | 2,700 | For Sale | |
0.08 | $4,200,000 | 6 | 5.5 | 3,436 | Recently Sold | |
0.08 | $4,708,100 | 6 | 6.5 | 4,165 | Off Market | |
0.05 | $3,147,400 | 4 | 3 | 2,030 | Off Market | |
0.11 | $3,700,000 | 5 | 5 | 3,962 | Recently Sold | |
0.11 | $3,500,000 | 4 | 3.5 | 2,775 | Recently Sold | |
0.15 | $6,196,300 | 5 | 5.5 | 3,525 | Off Market | |
0.12 | $4,475,000 | 4 | 3.5 | 3,666 | Recently Sold | |
0.11 | $4,102,200 | 4 | 4 | 2,744 | Off Market |
Price and Tax history
| Date | Event | Price |
|---|---|---|
Aug 29, 2026 Source: MIAMI #A12079811 | Listed For Sale | $8,000,000 |
Jun 18, 2020 Source: MIAMI #A10833693 | Sold | $1,085,000 |
Mar 13, 2020 Source: Agent Provided | Listed For Sale | $1,190,000 |
Aug 8, 2019 Source: Agent Provided | ListingRemoved | $1,395,000 |
Jan 5, 2019 Source: Agent Provided | PriceChange | $1,395,000 Price increased by 30,900% |
Aug 9, 2018 Source: Agent Provided | ListingRemoved | $4,500 |
Aug 9, 2018 Source: Agent Provided | Listed For Sale | $1,675,000 |
Jul 19, 2018 Source: Agent Provided | PriceChange | $4,500 Price decreased by 6% |
Jun 8, 2018 Source: Agent Provided | Listed For Rent | $4,795 |
Aug 29, 2017 Source: Agent Provided | ListingRemoved | $4,300 |
Jul 20, 2017 Source: Agent Provided | PriceChange | $4,300 Price decreased by 14% |
May 16, 2017 Source: Agent Provided | Listed For Rent | $5,000 |
May 18, 2014 Source: Agent Provided | ListingRemoved | $5,000 |
Dec 27, 2013 Source: Agent Provided | Listed For Rent | $5,000 |
Jun 30, 2012 Source: Agent Provided | ListingRemoved | $4,500 |
May 11, 2012 Source: Agent Provided | Listed For Rent | $4,500 |
Apr 17, 2012 Source: N/A | Sold | $998,000 |
Jan 11, 2012 Source: Agent Provided | ListingRemoved | $998,000 |
Dec 17, 2011 Source: Agent Provided | Listed For Sale | $998,000 |
| Year | Property tax | Tax assessment |
|---|---|---|
| 2025 | $30,778 | $2,216,694 |
Home facts updated by county records
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections
James Duncan, Duncan Studio Real Estate Division PLLC
Agent Phone: (305) 979-2520
IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.
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Frequently asked questions about 544 Warren Ln
- What is the estimated monthly payment for 544 Warren Ln?Based on a $8,000,000 list price with 20% down at today's rates, the estimated monthly payment for 544 Warren Ln in Key Biscayne, FL is approximately $54,227 (about $41,885 principal & interest, $12,267 property taxes, and $75 homeowner's insurance). This is an estimate. Actual payment depends on your loan terms.
- How does the list price for 544 Warren Ln compare to homes in Key Biscayne?544 Warren Ln in Key Biscayne, FL is listed at $8,000,000, about 414% above the $1.56M median sale price in Key Biscayne.
- What do residents say about Key Biscayne?Residents describe Key Biscayne, FL as walkable to grocery stores, dog-friendly, and walkable to restaurants. See homes for sale in Key Biscayne, FL.
- What are the closest schools to 544 Warren Ln?The closest schools to 544 Warren Ln in Key Biscayne, FL are Coral Gables Senior High School (Pre-K, rated 5/10), Key Biscayne K-8 Center (Pre-K/Elementary/Middle, rated 8/10), Ponce De Leon Middle School (rated 6/10).
- Does 544 Warren Ln have air conditioning?Yes, 544 Warren Ln in Key Biscayne, FL has air conditioning.
- Does 544 Warren Ln have a pool?Yes, 544 Warren Ln in Key Biscayne, FL has a pool.
544 Warren Ln, Key Biscayne, FL 33149 is a 6 bedroom, 6 bathroom, 1,044 sqft single-family home built in 2026. This property is currently available for sale and was listed by MIAMI on Aug 29, 2026. The MLS # for this home is MLS# A12079811.