131 Oakside Drive Perched atop a scenic hill in one of Smithtown's most prestigious enclaves, this architecturally distinctive ranch-style home offers an unmatched combination of total privacy, eco-conscious design, and serene natural beauty. Located within the award-winning Smithtown School District and surrounded by lush woodlands near the Nissequogue River, this Mid Century Modern home is a true retreat for those who value tranquility, style, and effortless indoor-outdoor living. From the moment you arrive, the home's striking exterior, expansive setting, and custom design features signal that this is no ordinary residence. Inside, the open-concept layout is both inviting and impressive, with a peaceful, zen vibe and a bridge over a one-of-a-kind custom koi pond. Soaring vaulted ceilings and radiant heated floors run through the main living areas. Walls of oversized sliding glass doors flood the interior with natural light and seamlessly connect the indoors to a sprawling Trex deck-perfect for entertaining on any scale. Cleverly hidden solar panels provide electricity at almost no monthly cost. At the heart of the home lies a beautifully appointed, modern kitchen featuring quartz countertops, an oversized center island, and sleek custom cabinetry. The space flows effortlessly into the expansive great room, creating a bright and airy living experience that feels both refined and relaxed. A two-sided fireplace enhances both the living and dining rooms. Step outside and discover a true entertainer's dream: a brand-new resort-style pool with a shallow sun bed lounge area, custom stone fire pit, and a vast deck ideal for hosting gatherings or simply enjoying peaceful mornings. A thoughtfully designed lower level includes a private guest suite with its own full bath and separate above-grade entrance-ideal for extended stays or multi-generational living. A fully equipped gym completes the lower level, with a ton of closets for storage. Propane generator. Unique in every sense, this residence is a rare find-a perfectly curated blend of modern comfort and natural serenity.