544 Warren Ln Key Biscayne, FL 33149
Key Biscayne AreaEstimated payment $46,390/month
Highlights
- New Construction
- In Ground Pool
- Marble Flooring
- Key Biscayne K-8 Center Rated A-
- Vaulted Ceiling
- 5-minute walk to Harbor Drive Park
About This Home
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 Agent
Duncan Studio Real Estate Division PLLC License #3231829 Listed on: 08/29/2026
Home Details
Home Type
- Single Family
Est. Annual Taxes
- $29,546
Year Built
- Built in 2026 | New Construction
Lot Details
- 7,828 Sq Ft Lot
- Southeast Facing Home
- Property is zoned 0100
Property Views
- Garden
- Pool
Home Design
- Concrete Roof
Interior Spaces
- 1,044 Sq Ft Home
- 2-Story Property
- Furnished
- Vaulted Ceiling
- Fireplace
Kitchen
- Gas Range
- Ice Maker
Flooring
- Wood
- Marble
Bedrooms and Bathrooms
- 6 Bedrooms
- Main Floor Bedroom
- Walk-In Closet
Home Security
- Clear Impact Glass
- High Impact Door
Parking
- 2 Attached Carport Spaces
- Driveway
- On-Street Parking
- Open Parking
Outdoor Features
- In Ground Pool
- Outdoor Grill
- Porch
Schools
- Keybiscayne Elementary School
- Ponce De Leon Middle School
- Mast Academy High School
Utilities
- Central Air
- Heating Available
Community Details
- No Home Owners Association
- Tropical Isle Homes Sub Subdivision
Listing and Financial Details
- Assessor Parcel Number 24-52-05-002-0160
Map
Home Values in the Area
Average Home Value in this Area
Tax History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2025 | $27,639 | $1,648,697 | ||
| 2024 | $26,323 | $1,498,816 | ||
| 2023 | $26,323 | $1,363,243 | $0 | $0 |
| 2022 | $22,150 | $1,239,312 | $0 | $0 |
| 2021 | $19,644 | $1,126,648 | $1,084,178 | $42,470 |
| 2020 | $16,907 | $1,021,281 | $964,801 | $56,480 |
| 2019 | $19,770 | $1,191,708 | $1,135,060 | $56,648 |
| 2018 | $19,996 | $1,245,683 | $1,135,060 | $110,623 |
| 2017 | $24,834 | $1,535,474 | $0 | $0 |
| 2016 | $24,145 | $1,395,886 | $0 | $0 |
| 2015 | $22,498 | $1,268,988 | $0 | $0 |
| 2014 | $20,706 | $1,153,626 | $0 | $0 |
Property History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Event | Price | List to Sale | Price per Sq Ft | Prior Sale |
|---|---|---|---|---|---|
| 08/29/2026 08/29/26 | For Sale | $8,000,000 | 0.0% | $7,663 / Sq Ft | |
| 07/31/2020 07/31/20 | Rented | $4,000 | -11.1% | -- | |
| 07/08/2020 07/08/20 | For Rent | $4,500 | 0.0% | -- | |
| 06/18/2020 06/18/20 | Sold | $1,085,000 | -8.8% | $1,039 / Sq Ft | View Prior Sale |
| 06/18/2020 06/18/20 | Pending | -- | -- | -- | |
| 03/13/2020 03/13/20 | For Sale | $1,190,000 | 0.0% | $1,140 / Sq Ft | |
| 02/01/2019 02/01/19 | Rented | $4,500 | 0.0% | -- | |
| 07/19/2018 07/19/18 | Price Changed | $4,500 | -6.2% | $2 / Sq Ft | |
| 06/03/2018 06/03/18 | For Rent | $4,795 | +14.2% | -- | |
| 08/28/2017 08/28/17 | Rented | $4,200 | -2.3% | -- | |
| 07/19/2017 07/19/17 | Price Changed | $4,300 | -14.0% | $2 / Sq Ft | |
| 05/15/2017 05/15/17 | For Rent | $5,000 | -- | -- |
Purchase History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Type | Sale Price | Title Company |
|---|---|---|---|
| Warranty Deed | $1,052,500 | Attorney | |
| Warranty Deed | $998,000 | Attorney |
Mortgage History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Status | Loan Amount | Loan Type |
|---|---|---|---|
| Previous Owner | $630,000 | New Conventional |
Source: MIAMI REALTORS® MLS
MLS Number: A12079811
APN: 24-5205-002-0160
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