Longboat Key Gulf-front estate heads to auction at $38.45 million

A nearly 32,000-square-foot new-construction estate on two private Gulf-front acres in Longboat Key, Florida, will go to auction through Concierge Auctions in early November. The sale offers a buyer the chance to finish and customize the architecturally designed home, with the live auction set for Nov. 20 in London.

Why it matters: - The property gives a buyer a rare chance to complete a large Gulf-front estate in one of Florida’s most coveted coastal markets. - The home combines direct beach access, privacy and a full custom finish opportunity at a listed price of $38.45 million. - The auction adds urgency for buyers seeking a one-of-a-kind waterfront property with significant scale and design flexibility.

What happened: - Concierge Auctions will sell the Longboat Key estate in cooperation with Joel Schemmel of Douglas Elliman Real Estate. - Bidding is scheduled to open Nov. 6 on conciergeauctions.com. - The auction will culminate live in London on Nov. 20 at The Connaught in Mayfair. - The sale is part of Concierge Auctions’ London Global Sale, a two-day event featuring luxury properties across North America and Europe.

The details: - The new-construction estate sits on nearly two private Gulf-front acres on Longboat Key, Florida. - Sweet Sparkman Architecture & Interiors designed the residence. - The home is substantially realized, with many finishes and selections already chosen and secured. - The planned residence spans more than 32,000 total square feet. - The layout includes 11 bedrooms, 13 full bathrooms and four half bathrooms. - A dramatic foyer opens to a great room with Gulf views. - The primary suite plans include dual spa-inspired bathrooms and bespoke dressing rooms. - The interior plan also includes multiple guest suites and a guest-level kitchenette. - The home will include a showpiece entertaining kitchen and a separate chef’s kitchen. - Other planned spaces include a formal dining room, temperature-controlled wine cellar, office, lounge and private cinema. - A detached guest house and separate pool house add flexibility for guests or staff. - The outdoor plan includes a pool and spa, expansive terraces, water features and layered landscaping leading to the private beach. - The property also includes an attached seven-car garage. - A rooftop deck is designed to capture coastal views. - Plans allow for a potential private tennis and pickleball court. - Images are available at conciergeauctions.com with credit to Luxhunters and Sweet Sparkman. - The listing states agents will be compensated according to the terms and conditions of the Listing Agreement. - Concierge Auctions’ Key For Key® program with Giveback Homes will direct funding from the closing toward new homes for families in need.

Between the lines: - The listing leans on scarcity: Gulf-front land, substantial unfinished scale and a high-end coastal setting are all difficult to replicate. - The auction format signals a push for a quicker, market-driven sale rather than a traditional long listing period. - The property’s partially completed status may appeal to wealthy buyers who want design control without starting from raw land.

What's next: - Interested buyers can review property details, diligence documents and other materials at ConciergeAuctions.com. - The auction opens Nov. 6, with final bidding set for Nov. 20 in London. - The outcome will determine how the buyer finishes the home’s final design and amenity package.

The bottom line: - Longboat Key is getting a marquee auction offering: a nearly finished Gulf-front mansion with room for a buyer to make the last call on a rare coastal estate.