Nestled within a tranquil five-acre estate, this custom timber-frame retreat seamlessly merges architectural elegance with state-of-the-art sustainability. Crafted from reclaimed Douglas Fir and thoughtfully designed with enduring materials, this exceptional home is a sanctuary for refined entertaining and peaceful repose. Experience sustainable luxury without compromise - a timeless estate built for generations to come. Inside, an open post-and-beam floor plan welcomes you with warmth and sophistication. Handcrafted details include 1.5-inch thick quarter-sawn red oak and reclaimed Douglas Fir flooring, custom black walnut doors and trim. The spacious, open, light-filled floor plan is designed for both grand entertaining and intimate living. The great room features soaring two-story ceilings, seamlessly flowing into the gourmet kitchen, dining area, and a large enclosed porch Step outside to the bluestone patio with a built-in grill, perfect for summer evenings and al fresco dining. A stunning atrium offers a tranquil space for morning tea, lush indoor gardens, and is plumbed for a hot tub.The main level also boasts a private library, which can also be used as a TV lounge or formal living room. Additionally, there is a main-floor ensuite bedroom-a perfect retreat for guests, in-laws, or multigenerational living. Upstairs, the primary suite enjoys a lavish spa bath, two separate closets, and a private balcony overlooking the expansive grounds. There's a full laundry room and an inviting reading nook/office/play room. And a separate wing with two spacious bedrooms and a shared bath. The walk-out lower level offers even more flexible living space, with, a spacious family room, game room, fitness room, wine room, tasting room, and a turreted music/playroom. A private guest suite with a full bath, second laundry room, and access to another large bluestone patio complete this versatile level. This retreat was designed for sustainable living with insulated concrete walls (R-40), Spancrete structural flooring, and a new 50-year DaVinci composite slate roof (2023). The entire heating system is boiler-based hot water. The lower level, first floor, and master bath floors are heated with radiant hot water tubing embedded in the concrete. The grounds include a 7,000 square foot irrigated, fenced garden with perennials, herb bed, asparagus patch and fruit trees. The oversized two stall barn is ready for horses and goats with an attached paddock. And there's plenty of room for a chickencoop, pool, sports court or soccer field. Close to award winning schools, shopping and dining in the quaint downtown Village of Barrington, and to the Metra train line.