Pre-Construction. To be built. PROPOSED 4, 250 SQ. FT. CUSTOM RESIDENCE .BUILD-TO-SUIT opportunity to create a bespoke coastal home with flexibility to tailor architecture, layout, finishes, and scale to a refined lifestyle.Located on Bay Island at the gateway to Siesta Key, 831 Siesta Drive offers a rare 0.386-acre triangular parcel with privacy, presence, and elevated potential to capture Sarasota Bay light and breezes. PROPERTY FEATURES .Over 276 feet of Siesta Drive frontage and a wide rear building envelope ideal for refined architecture, indoor-outdoor living, elevated terraces, and a resort-style pool amid tropical landscaping. LOCATION Seamless access to the mainland just over the bridge, moments from Siesta Beach, and surrounded by established luxury estates on Bay Island. THE OPPORTUNITY .Create a signature residence in one of Siesta Key’s most discreet, accessible enclaves; land-only or BUILD-TO-SUIT options available (see separate vacant land listing).YOUR NEXT CHAPTER  Delivered by J&C Premier Builders, known for design-driven custom homes including 519 Rountree Drive, Longboat Key, where craftsmanship and understated luxury meet.