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
See this Listing
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
- Address6603 GULFSIDE ROAD LONGBOAT KEY FL
- SubdivisionSLEEPY LAGOON
- CityLONGBOAT KEY
- CountyManatee
- Zip Code34228
Subdivisions in LONGBOAT KEY
- 360 NORTH PH II
- 7981 – LONGBOAT KEY MOORINGS
- 8177 – LONGBOAT KEY MOORINGS MARINA 2
- ACREAG0001
- AQUARIUS CLUB
- ARBOMAR APTS
- ARIA LONGBOAT KEY
- AVIGNON VILLAS
- BAILEY-DOBSON
- BAY ISLES
- BAYOU HAMMOCK
- BAYPORT BCH & TEN PH A
- BAYPORT BCH & TEN PH C
- BAYPORT BCH & TEN PH D
- BAYPORT BCH & TEN PH E
- BAYPORT BCH & TEN PH F
- BAYVIEW ESTATES
- BEACH HARBOR CLUB
- BEACHES OF LONGBOAT KEY PH-1
- BEACHPLACE I
- BEACHPLACE II
- BEACHPLACE III
- BOATHOUSE ON LONGBOAT
- BONAIRE AT LONGBOAT KEY
- BUTTONWOOD COVE
- BUTTONWOOD HARBOR
- CEDARS EAST SEC 1
- CEDARS EAST SEC 2
- CHARLIES
- CLUB LONGBOAT BEACH & TENNIS
- COLLIER WALKER
- CONDOMINIUM RESIDENCES AT LONGBOAT KEY
- COQUINA BEACH
- COREYS LANDING
- COUNTRY CLUB SHORES
- COUNTRY CLUB SHORES IV
- COUNTRY CLUB SHORES SEC 02
- COUNTRY CLUB SHORES SEC 03
- COUNTY CLUB SHORES SEC I
- DREAM ISLAND
- EMERALD HARBOR
- EMERALD HARBOR UNIT 1 REV
- EMERALD POINTE NORTH
- EN PROVENCE
- FAIRWAY BAY
- FAIRWAY BAY 1
- FAIRWAY BAY 2 PH 1
- FAIRWAY BAY 2 PH 2 & 3
- FAIRWAY BAY 3
- FRACTIONAL SUB
- GRAND BAY 1
- GRAND BAY 2
- GRAND BAY 3
- GRAND BAY 4
- GRAND BAY 6
- GULFSHORE OF LONGBOAT KEY
- HARBOR OAKS PH I & II
- HARBOUR COURT
- HARBOUR OAKS
- HARBOUR OAKS 2
- HARBOUR OAKS PH I & II
- HARBOUR VILLA CLUB AT THE BUCCANEER
- HARRIS BAYOU
- HOOTON
- INFINITY ON LONGBOAT KEY
- INN ON THE BEACH
- INN ON THE BEACH PH II
- INN ON THE BEACH PH III
- ISLANDER CLUB
- ISLANDER CLUB OF LONGBOAT
- ISLANDS WEST
- JEWFISH KEY
- L AMBIANCE
- L AMBIANCE 1
- L AMBIANCE AT LONGBOAT KEY CLUB
- L AMBIANCE AT LONGBOAT KEY CLUB PH 02
- LAGUNA YACHT VILLAGE
- LONGBEACH ON LONGBOAT KEY
- LONGBEACH REV OF R P JORDANS SUB
- LONGBOAT ARMS
- LONGBOAT HARBOUR
- LONGBOAT HARBOUR TOWERS
- LONGBOAT KEY
- LONGBOAT KEY CASA DEL MAR
- LONGBOAT KEY MOORINGS
- LONGBOAT KEY MOORINGS MARINA
- LONGBOAT KEY MOORINGS MARINA 2
- LONGBOAT KEY TOWERS
- LONGBOAT SHORES REV
- LONGBOAT TERRACE
- MARINA BAY
- MCCALLS BEACH CASTLE
- NEPTUNE
- NEPTUNE ON LONGBOAT KEY
- NEW PASS SHORES
- NORTHGATE OF LONGBOAT KEY
- PELICAN HARBOUR
- PELICAN HARBOUR & BEACH CLUB
- PIERRE
- PLAYERS CLUB 3
- PLAYERS CLUB I
- PLAYERS CLUB II
- PLAYERS CLUB III
- PORTOBELLO
- PRESERVE/LONGBEACH
- PRIVATEER NORTH
- PRIVATEER SOUTH
- PROMENADE
- QUEENS HARBOR A/K/A MANCHESTER BAY
- QUEENS HARBOUR
- RAUCH
- REGENT PLACE PH 2
- SABAL COVE
- SAGE LBK
- SALTY ACRES
- SANCTUARY I
- SANCTUARY IV
- SAND CAY
- SANDS POINT
- SARASOTA OUTRIGGER
- SEA GATE CLUB
- SEA PINES
- SEAGRAPE INN
- SEAPLACE
- SEAPLACE I
- SEAPLACE II
- SEAPLACE III
- SEAPLACE V
- SEAPLACE VI
- SHIPMANS ADD
- SLEEP LAGOON PARK
- SLEEPY LAGOON
- SLEEPY LAGOON PARK
- SLEEPY LAGOON PARK 2
- SLEEPY LAGOON PART NO 2
- SPANISH MAIN YACHT CLUB CONDO
- ST REGIS LONGBOAT KEY
- ST. REGIS
- ST. REGIS LONGBOAT KEY
- SUNSET BEACH
- SUNSET BEACH PH 2
- SUTTON PLACE
- TANGERINE BAY CLUB
- THE BANYAN BAY CLUB
- THE PRESERVE/LONGBEACH
- THE SHORE
- THE WESTCHESTER
- TIFFANY PLAZA
- TREE HOUSE
- TURTLE CRAWL SEC 36 TOWNSHIP 35S RANGE 16E
- TWIN SHORES BEACH & MARINA
- TWIN SHORES BEACH AND MARINA, INC.
- TWIN SHORES MOBILE HOME
- VEINTE
- VILLA DI LANCIA PH 1
- VILLA DOS PALMAS
- VIZCAYA AT LONGBOAT KEY PH 01
- VIZCAYA AT LONGBOAT KEY PHASE 1
- WATER CLUB 01 AT LONGBOAT KEY
- WENDY
- WESTCHESTER APTS
- WESTCHESTER CONDO APTS UN 3
- WHITNEY BEACH
- WHITNEY BEACH III
- WINDWARD BAY AMD
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.
Similar Listings Nearby
Courtesy of DEVELOPERS REALTY LBK, INC. Disclaimer: All data relating to real estate for sale on this page comes from the Broker Reciprocity (BR) of the Orlando/Tampa – FL. Detailed information about real estate listings held by brokerage firms other than CENTURY 21 Carioti include the name of the listing broker. Neither the listing company nor CENTURY 21 Carioti shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. The Broker providing this data believes it to be correct, but advises interested parties to confirm any item before relying on it in a purchase decision. Copyright 2026. Orlando/Tampa – FL. All rights reserved. 6603 GULFSIDE ROAD
LONGBOAT KEY, FL


































