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$11,900,000

Active

1600 Harbor Sound Dr, Longboat Key, FL 34228

5 beds · 5.5 baths · 5,689 sq ft

Listing courtesy of COLDWELL BANKER REALTY · MLS# A4692027

181 days on market

Refreshed from the Stellar MLS feed . This listing’s MLS record last changed .

About this home

What’s special

  • Deep-water canal frontage
  • Multiple boat lifts
  • Private elevator
  • Butler's pantry
  • Sauna and steam room
  • Resort-style pool and spa
  • Outdoor kitchen

AI-selected highlights from the listing description below.

Pre-Construction. To be built. Positioned directly across from the iconic St. Regis Longboat Key Resort, this exceptional waterfront residence offers immediate access to world-class amenities, pristine Gulf beaches, fine dining, and championship golf. Located within the exclusive double-gated Harbor Section of Bay Isles on Longboat Key, 1600 Harbor Sound Drive represents a rare convergence of scale, location, and boating capability, crafted for those seeking a refined Gulf Coast lifestyle at the highest level. Set on an expansive 18,043-square-foot corner homesite, the property features an impressive 135 feet of deep-water canal frontage, with the ability to accommodate multiple lifts (up to three) and a substantial vessel. This level of frontage and flexibility is increasingly rare, even among premier waterfront estates. Spanning 5,689 square feet under air, the residence is thoughtfully designed to balance grand-scale entertaining with comfortable everyday living. The home includes 5 bedrooms, a bonus room or office, 5.5 bathrooms, and a 4-car garage. Soaring ceilings and expansive glass openings create a bright, open environment with seamless indoor-outdoor transitions, complemented by refined, designer-level finishes and a private elevator servicing all levels. The chef’s kitchen is executed with top-tier appliances, clean architectural lines, and a level of detail rarely seen in spec construction. A full-scale butler’s pantry, complete with its own stove, provides exceptional functionality and allows for seamless entertaining while keeping the main kitchen pristine. The primary suite is designed as a true retreat, featuring separate his-and-her bathrooms and a fully integrated wellness experience, including a sauna and steam room, bringing a spa-level environment into daily living. Every element has been carefully curated to deliver comfort, functionality, and a sense of understated luxury throughout. Outdoor living is equally compelling, with a resort-style pool and spa, along with a fully equipped outdoor kitchen, covered dining, and lounge areas. These spaces are perfectly positioned to capture the tranquility of the waterfront setting while embracing Florida’s year-round coastal climate. Opportunities of this caliber, combining substantial frontage, strong boating capability, a wellness-driven design, and a premier Harbor Section address are increasingly limited. 1600 Harbor Sound Drive presents a compelling offering for the discerning buyer seeking a newly built waterfront estate in one of Sarasota’s most prestigious enclaves.

Facts

Property type
Single Family Residence
Year built
2026
Bathrooms
5 full, 1 half
Living area
5,689 sqft
Lot size
0.41 acres
Waterfront
Yes · 135 ft
Water access
Bay/Harbor, Beach - Access Deeded, Canal - Saltwater
Water view
Yes
Private pool
Yes
Exposure
West
Furnished
Unfurnished
Flood zone
AE
CDD
No
55+ community
No
Annual taxes
$24,527/yr
Monthly fees
$957/mo
Listed
Apr 30, 2026
MLS #
A4692027

Estimate the monthly payment

Estimate by Lasbury Tracy Realty — not a loan offer

Starting figures for 1600 HARBOR SOUND DR. Everything below is editable.

AssumptionNot a quoted rate. Ask a lender what you actually qualify for today.

From this listingThe seller's most recent annual tax bill as reported to the MLS. Your bill will differ — Florida reassesses on sale and homestead caps reset.

Editable estimateA placeholder, not a quote. On the Gulf Coast this is the line item most likely to be wrong: premiums swing on roof age, wind mitigation, elevation, and carrier appetite. Get a real quote before you rely on this number.

Starts at $0Deliberately zero until you enter a figure — we will not inflate a payment with a guess. Many homes here need it; ask us for the property's flood zone and the current policy's premium.

From this listingMonthly association fee as reported to the MLS. Confirm what it includes, and ask about special assessments.

AssumptionNot applied — your down payment is 20% or more.

Estimated total monthly payment

$73,090

$60,173 of that is principal & interest. 18% is taxes, insurance and fees — which is why those inputs matter more here than the rate does.

Principal & interest
$60,173
Property taxes
$2,044
Homeowners insurance
$9,917
Flood insurance
$0
HOA / condo fees
$957
Mortgage insurance (PMI)
$0
Total per month
$73,090

Over the life of the loan

Loan amount
$9,520,000
Down payment
$2,380,000
Total interest
$12,142,235
Principal + interest paid
$21,662,235
Paid off in
2056

Interest is the exact schedule total for a fixed-rate loan held to term and assumes no extra payments. Taxes, insurance and fees are not included in these lifetime figures because they change every year.

Calculated on this page from the figures above — nothing is sent anywhere and no lender is quoting you. Figures are estimates for planning only, not a pre-approval, commitment to lend, or a statement of the taxes and insurance you will actually be charged. Lasbury Tracy Realty Inc. is a real estate brokerage, not a lender or an insurance agent.

Take a tour

Pick a day that suits you — a licensed Lasbury Tracy agent confirms personally, usually within minutes. No account needed.

1600 Harbor Sound Dr, Longboat Key, FL 34228

Listing courtesy of COLDWELL BANKER REALTY · MLS# A4692027 · Active

How would you like to see it?
Which day?
What time of day?

In person · Thu, Oct 29 · Morning (9-12)

No account, no obligation. Prefer to talk? (941) 474-5585

Where this home is

Opens on aerial — on this coast the canal, the lot and the neighbours answer more questions than a street grid does.

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Listing information is provided in part by Stellar MLS, as distributed by MLS GRID. Based on information submitted to the MLS as of Oct 28, 2026, 9:51 PM (ET). All data is obtained from various sources and may not have been verified by broker or MLS. All information provided is deemed reliable but is not guaranteed and should be independently verified. 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. Some IDX listings have been excluded from this website.

Lasbury Tracy Realty Inc. · [email protected]