6603 GULFSIDE ROAD, LONGBOAT KEY, FL, 34228
Active463 days on marketListed Apr 17, 2025MLS #A4648957
About this home
6603 GULFSIDE ROAD
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.
Facts & features
The home at a glance
5
Bedrooms
5.5
Bathrooms
4,925
Sqft
0.39 ac
Lot size
3
Garage
2025
Year built
One
Levels
$3,046
Per sqft
Inside
Outside & construction
Community & fees
Utilities & systems
The numbers
What it really costs
Built from this home's actual numbers — the most recent property-tax bill on record — not generic estimates.
$90,453 /mo · 10% down Conventional, 30-yr fixed at 6%
The assumptions
Above the FHA loan limit for our service areas, so Conventional is the default. VA buyers: switch below — $0 down.
These numbers assume a generic buyer — your credit, down payment and loan program change them. Get the real quote in minutes:
Andrew Acosta
Acosta Home Loans with PRMG · NMLS #1468866
Run your own numbers
FHA isn’t available at this price — the loan would exceed the $541,287 FHA limit for our service areas.
Estimated payment
$90,453/mo
Includes estimated PMI — it drops off once you reach 20% equity. Taxes reflect the most recent bill on record; insurance is a typical-Florida estimate. Your lender’s numbers will differ. CENTURY 21 Edge partners with Florida’s best lenders.
Value check
Is the price right?
The internet’s favorite home-value number comes from a single automated model that has never seen the street, the finishes, or the view — which is why it routinely misses by tens of thousands of dollars. The edgeAI estimate combines multiple independent data sources with our team’s on-the-ground expertise in this exact market.
$/sqft vs Longboat Key actives
$3,046 vs $696
Days on market
463 vs 95 typical
Where $3,046/sqft sits among the 276 Longboat Key actives
The edgeAI estimate is a starting point, not an appraisal or a broker price opinion. It is generated from public records, listing data and market modeling, and is subject to change once a licensed real estate professional personally inspects the property. Condition, floor, view and lot are not fully captured by any model — ask us for a full comparative market analysis.
Where it sits
Inside Longboat Key
Drive times from this address
Estimated driving times, typical traffic. Data © OpenStreetMap contributors.
Get to know Longboat Key. See the full Longboat Key guide →
LONGBOAT KEY 34228 — neighborhood snapshot
Population
7,512
Median age
71.5
Median income
$143,365
Median home value
$959,200
Avg household
1.8
Households w/ children
51%
For the school run
Sarasota County School District
School assignments and ratings via edgeAI — always verify with the district.
The numbers that matter
The Longboat Key market
$820K → $893K
Longboat Key median sold, yr/yr
92.8%
Sale-to-list ratio (12 mo)
114 of 276
Longboat Key actives have cut their price
Median sold price, Longboat Key, trailing 36 months (3-month rolling) · live MLS data.
This home is listed 2208% above the LONGBOAT KEY 34228 median. See the full Longboat Key market guide →
Paper trail
This home's history
Reality check
What actually sold near 6603 GULFSIDE ROAD
Asking prices are opinions — closed sales are facts. The most comparable homes that actually changed hands nearby in the last twelve months.
Sold · May ’26$8,000,000
6161 GULF OF MEXICO DRIVE · same community
4 bd · 4.5 ba · 4,224 sqft · $1,894/sqft · 187 DOM
Sold · May ’26$8,350,000
6477 GULFSIDE ROAD · same community
6 bd · 6.5 ba · 5,862 sqft · $1,424/sqft · 171 DOM
Sold · Jan ’26$2,700,000
6473 GULF OF MEXICO DRIVE · same community
3 bd · 2.5 ba · 2,804 sqft · $963/sqft · 30 DOM
Closed-sale data from the MLS, last 12 months, selected for similarity in size and location. No two homes are identical — ask us for a full comparative analysis.
Your home team
The pros in your corner
Buying a home is two conversations — the home and the money. Here’s who handles each, side by side, already working together.
Your agent
Steeve Cadeau
REALTOR® · CENTURY 21 Edge
Tours, negotiation, and every question about 6603 GULFSIDE ROAD — start here.
Your lender
Andrew Acosta
Acosta Home Loans with PRMG · NMLS #1468866
Pre-approval, rates, and the real monthly number for 6603 GULFSIDE ROAD — before you fall in love.
See it in person
Schedule a tour
Pick a day that works — this goes straight to Steeve's phone and CRM.
Straight answers
6603 GULFSIDE ROAD FAQs
What would the monthly payment be for 6603 GULFSIDE ROAD?+
With 10% down on a 30-year Conventional loan at 6%, the all-in payment lands around $90,453/mo — principal and interest, the actual property-tax bill and typical Florida insurance. The payment calculator on this page lets you switch loan type (FHA, Conventional, VA) and adjust the down payment, rate and term.
What are the property taxes on 6603 GULFSIDE ROAD?+
The most recent tax bill on record (2024) was $44,748. A new owner's bill can differ once the sale price resets the assessed value — we can walk you through what to expect.
Are pets allowed at 6603 GULFSIDE ROAD?+
The listing reports pets: Cats OK, Dogs OK. Communities often layer on breed or weight rules — we'll verify the specifics with the association before you commit.
How does the price compare to other homes in Longboat Key?+
At $15,000,000, this home is listed about 1463% above the Longboat Key median of $960,000. The market section on this page shows how the area is trending.
Which schools are assigned to 6603 GULFSIDE ROAD?+
Booker High School (high), Southside Elementary School (elementary), Booker Middle School (middle) — Sarasota County School District. Always verify school assignments with the district before relying on them.
The brief
Four things that matter here
01Positioned at the premium end
$15,000,000 runs 2208% above the LONGBOAT KEY 34228 median — but at 4,925 sqft it's also nearly 3 times the size of the typical Longboat Key listing.
02Waterfront living
This home sits directly on the water — the single scarcest feature in Florida inventory and the strongest long-term value anchor.
03Time on market is leverage
463 days on market against a Longboat Key median of 95 — sellers in this position are usually ready to negotiate.
04Strong assigned schools
Booker High School, Southside Elementary School, Booker Middle School — Southside Elementary School rates 5 of 5. Always verify assignments with the district.
Keep looking
Similar homes nearby
Listing courtesy of DEVELOPERS REALTY LBK, INC · Reid Murphy. MLS #A4648957.
IDX information is provided exclusively for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed accurate by Stellar MLS.
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