6603 GULFSIDE ROAD LONGBOAT KEY FL 34228 MLS #A4648957

6603 GULFSIDE ROAD
LONGBOAT KEY, FL, 34228
$15,000,000
5 Beds
5.5 Baths
4,925 SqFt
0.39 Acres
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MLS #A4648957 image #0
Under Construction. You’re in for something special with this new beachfront construction set to be completed by May, 2026. Located on over a quarter acre on Longboat Key, this contemporary luxury home is directly on the beach with stunning Gulf views. Designed with a modern coastal aesthetic, it’s built for both style and comfort. Inside no detail is overlooked. From sleek Walker Zanger porcelain tile to custom cabinetry and polished nickel fixtures, the finishes are top-tier. The gourmet kitchen features an expansive layout with a large waterfall-edge island, double Wolf ovens, Sub-Zero refrigeration, a full-size wine cooler, and a Wolf induction cooktop—everything you need for serious cooking or entertaining. Primary suite is a true showstopper with floor-to-ceiling glass sliders that open wide to a sweeping terrace. Gulf breezes flow through the space, and the shimmering azure water is always in view. Inside, the suite offers a spacious walk-in closet and a spa-like bath featuring tiled walls, a walk-in shower with multiple heads, a soaking tub, dual floating vanities, and a private water closet. Upstairs, an executive office and three generous bedroom suites—each with its own walk-in closet—gives plenty of space for family or guests. A fourth bedroom shares a cozy den, perfect for lounging or movie nights. The grand-level outdoor space takes full advantage of its beachfront setting with a 36-foot lap pool, sun shelf, heated spa, and a fully equipped summer kitchen with a grilling station—ideal for effortless entertaining, all just steps from the sand.

Property Details

Price:
$15,000,000
MLS #:
A4648957
Status:
Active
Beds:
5
Baths:
5.5
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
SLEEPY LAGOON
Neighborhood:
34228longboatkey
Listed Date:
Apr 17, 2025
Finished Sq Ft:
4,925
Total Sq Ft:
6,225
Lot Size:
16,893 sqft / 0.39 acres (approx)
Year Built:
2025
WaterfrontPoolNewconstruction34228 – Longboat Key34228longboatkeySleepy LagoonNone1 Month

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Schools

Interior

Appliances
Built-In Oven, Convection Oven, Dishwasher, Disposal, Electric Water Heater
Bathrooms
5 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air
Flooring
Ceramic Tile
Heating
Central
Laundry Features
Laundry Room

Exterior

Construction Materials
Block, Metal Frame
Exterior Features
Balcony
Roof
Other

Financial

Tax Year
2024
Taxes
$44,748

Map

Community

Subdivisions in LONGBOAT KEY

Market Summary

Current real estate data for Single Family in LONGBOAT KEY as of Mar 19, 2026
175
Single Family Listed
147
Avg DOM
1,057
Avg $ / SqFt
$3,390,061
Avg List Price

Property Summary

    Located in the SLEEPY LAGOON subdivision, 6603 GULFSIDE ROAD LONGBOAT KEY FL is a Single Family for sale in LONGBOAT KEY, FL, 34228. It is listed for $15,000,000 and features 5 beds, 6 baths, and has approximately 4,925 square feet of living space, and was originally constructed in 2025. The current price per square foot is $3,046. The average price per square foot for Single Family listings in LONGBOAT KEY is $1,057. The average listing price for Single Family in LONGBOAT KEY is $3,390,061. To schedule a showing of MLS#a4648957 at 6603 GULFSIDE ROAD in LONGBOAT KEY, FL, contact your CENTURY 21 Carioti agent at 800-783-8847.

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6603 GULFSIDE ROAD
LONGBOAT KEY, FL