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 Realty 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. 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 Realty 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 Realty will run the comps and help you craft a competitive, well-supported offer.

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$8,000,000

544 Warren Lane

Key Biscayne, FL 33149

TROPICAL ISLE HOMES SUB

Explore the area: Key Biscayne homes for sale · Miami Dade County real estate

Bedrooms

Bathrooms

1,044

Living Sq Ft

2026

Year Built

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.

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Listing Snapshot

Price: $8,000,000
Days on Site: 0 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.

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General 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
Total Rooms: 1
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

Tropical Isle Homes Sub

View Community Details →

Homes for Sale: 3
Median List Price: $7,490,000
Median $/Sq Ft: $1,988
Avg Days on Market: 47

View all 3 homes for sale in Tropical Isle Homes Sub →

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 Realty 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. 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 Realty 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 Realty 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 Realty. 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