6603 GULFSIDE ROAD Longboat Key, FL $ 15,900,000
6603 GULFSIDE ROAD
$ 15,900,000
Recently Listed New Construction
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6603 GULFSIDE ROAD

Longboat Key, FL, 34228
$ 15,900,000
Bedrooms5 Baths5.1 Sq 4,925

Monthly Estimate*

$ 109,817

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Single Family Home for sale in Longboat Key, FL

for $15,900,000 with 5 bedrooms and 5 full baths, 1 half bath. This 4,925 square foot home was built in 1974 on a lot size of 0.39.

Just steps from the sand along Longboat Key’s prized coastline, the construction of a modern architectural showpiece is now complete and ready for living the ultimate lifestyle. Majestically poised on over a third of an acre, this modern residence’s visual presentation was intentionally and expertly planned with no detail overlooked. Expansive walls of glass take full advantage of the dramatic Gulf views that stretch across the horizon and set the stage for viewing memorable sunsets in brilliant hues of yellows, oranges and reds. The sophisticated coastal aesthetic has been cohesively designed to evoke a peaceful ambiance, captivate the senses, and create harmonious spaces that inspire and uplift. This exceptional beachfront estate offers a light-filled floor plan of 4,925 sq. ft. and provides five bedrooms, six baths, an executive office and a den. Encompassing nearly 1,000 sq. ft., the living, dining and kitchen area is simply breathtaking with walls of glass on two sides and cerulean blue water panoramas stretch as far as the eye can see. Style and comfort easily flow throughout the residence with its crisp clean lines and spacious open areas filled with natural light, balanced by organic materials and earthy neutral tones to create an open, airy ambiance. From sleek Walker Zanger porcelain tile to custom cabinetry and polished nickel fixtures, the finishes are top-tier. The kitchen façade is artistically impressive and features everything you’d expect in a home of this caliber with a large waterfall-edge island and premium Sub-Zero and Wolf appliance package including double ovens, induction cooktop, and full-size temperature-controlled wine storage. The owner’s retreat is a true showstopper with floor-to-ceiling glass sliders that open wide to a sweeping terrace perched high above the water. Inside, the suite offers a fully customized wardrobe room and a resort-inspired bath featuring tiled walls, a walk-in shower with multiple heads, a freestanding designer 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. This incredible residence is well suited for entertaining, whether enjoying small intimate gatherings or hosting elaborate sunset soirees. The enormous ground-level outdoor space is highlighted by a 36-foot lap pool, sun shelf, heated spa, and a fully equipped summer kitchen with a grilling station. Additionally on this level are a three-car garage, an outdoor shower, and an elevator to all 3 levels plus a staircase in a glass enclosed entry. Living along the water’s edge introduces magical nuances with the dawning of every new day. The sights and sounds in one of nature’s most beautiful settings will lull you into peaceful bliss. Life on the water is truly a dream come true—a place to be cherished and appreciated for years to come.

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Single Family Active

Price

$ 15,900,000

Bedrooms

5

Full Bath

5

Half Bath

1

Property Type

Single Family

Taxes

$ 45,006

Style

Single Family Residence

Lot Size

0.39

Year Built

1974

Town/City

Longboat Key

County/Region

Manatee

MLS | Web ID

A4712737

Features
General
Sewer Public Sewer
Heating Central
Cooling Central Air
Utilities Electricity Connected
Roof Other
Appliances Bar Fridge Cooktop Dishwasher Disposal Dryer Gas Water Heater
Zoning R3SF
Garage Spaces 3
Pool Features In Ground
Construction Materials Block
Year Built 1974
Levels Three Or More
Property Subtype Single Family Residence
Tax Year 2025
Ownership Fee Simple
Waterfront Features Beach
County Manatee
New Construction true
Property Type Residential
Attached Garage true
Subdivision Name SLEEPY LAGOON
Facing Direction West
Garage Y/N true
Total Rooms 9
Full Baths 5
Status Active
Directions Gulf of Mexico to North entrance of Gulfside rd
City LONGBOAT KEY
Body of Water GULF OF MEXICO
Senior Community Y/N false
MLS Area 34228 - Longboat Key
Lot Size Units Square Feet
Lot Size Square Feet 16893
Carport Spaces 0
Carport Y/N false
Listing Terms Cash Conventional
Spa Features Heated In Ground
Property Attached Y/N false
Land Lease Y/N false
Tax Annual Amount 45006.76
Property Condition Completed
Additional Parcels Y/N false
Lease Considered Y/N true
Virtual Tour https://pix360.com/summary/42857/
Building Area Units Square Feet
Living Area Units Square Feet
Standard Status Active
Occupancy Type Vacant
Tax Lot 38
Legal Description THE SWLY PART OF LOT 38 SLEEPY LAGOON SUB MORE PARTICULARLY DESC AS FOLLOWS: COM AT A CONC MON AT THE MOST NLY COR OF SD LOT 38; TH S 37 DEG 48 MIN W ALG THE NWLY LN OF SD LOT 38 A DIST OF 185 FT TO A CONC MON FOR A POB; TH S 63 DEG 46 MIN 36 SEC E A DIST OF 48.22 FT TO A CONC MON SD CONC MON BEING A PT ON A CURVE OF WHICH THE C/A IS 94 DEG 32 MIN 04 SEC AND THE RADIUS PT LIES S 63 DEG 46 MIN 36 SEC E A RADIAL DIST OF 42 FT FROM SD CONC MON; TH SLY ALG THE ARC OF SD CURVE A DIST OF 69.30 FT TO A CONC MON ON THE SELY LN OF SD LOT 38; TH S 37 DEG 48 MIN W ALG SD SELY LN A DIST OF 115.36 FEET TO A CONC MONUMENT; THENCE CONTINUE S 37 DEG 48 MIN W A DISTANCE OF 50 FEET MORE OR LESS TO THE MEAN HIGH WATER LINE OF THE GULF OF MEXICO; TH
Water View Beach Gulf/Ocean - Full
Water Access Type Beach Beach - Access Deeded
Minimum Lease 1 Month
Water Access Y/N true
Water View Y/N true
Flood Zone Code AE
In Law Suite YN false
DockY/N false
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Interior
Interior Amenities Built-in Features Ceiling Fan(s) Eating Space In Kitchen Elevator High Ceilings Kitchen/Family Room Combo L Dining Open Floorplan Primary Bedroom Main Floor
Flooring Ceramic Tile
Furnished Y/N Unfurnished
Total Stories 3
Common Walls Corner Unit
Air Conditioning Y/N true
Heating Y/N true
Fireplace Y/N false
Half Baths 1
Laundry Features Laundry Room
Total Bedrooms 5
Total Baths 6
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Exterior
Exterior Amenities Balcony Lighting Private Mailbox Storage
Water Source Public
Lot Size Area 16893
Foundation Details Block Slab
Spa true
Building Area Total 6225
Lot Dimensions 103 x 164
Lot Size Acres 0.39
Road Surface Type Asphalt
Private Pool true
Waterfront Y/N true
Covered Spaces 3
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* Excluded Features
List By
Developers Realty Lbk, Inc

Broker

Reid@ReidMurphy.com

Email

Affordability Calculator

$113,568
Per Month
97%
3%
0%
Monthly Principal & Interest
$109,817
Monthly Property Taxes
$3,751
Monthly Home Insurance
--
Default based on a 30-year fixed rate of 7.375% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
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Nearby
4827338 Elementary School
4827337 Middle School
Unknown High School High School
Pricing History
DatePricePrice ChangeDescription
11/11/2026$15,900,000 Listed Price

Map


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6603 GULFSIDE ROAD, Longboat Key, FL, 34228 is a Single Family Home for sale at $15,900,000 with 4,925 sqft and a lot size of 0.39. 6603 GULFSIDE ROAD has 5 bedrooms, 5.1 baths, and was built in 1974. The property's zip code is 34228 which is in Longboat Key, FL