Best of the Best! Spectacular 5+1bedroom custom-built mansion showcasing the pinnacle of luxury finishes, nestled on a picturesque cul-de-sac in the prestigious Old Unionville community. This expansive residence offers over 6,600 sq. ft. of refined living space. The main floor boasts an open-concept design with 10-ft ceilings, rich hardwood floors, exquisite paneling, custom Mouldings and built-in speakers. A chef-inspired gourmet kitchen features top-of-the-line built-in appliances, stunning marble countertops, and a matching backsplash. The family room includes built-in shelving, a cozy fireplace, and a walkout to a $400K upgraded oversized patio with a 40x12 ft saltwater heated swimming pool and cabana. A luxurious paneled library and a grand staircase with an oversized skylight complete the level, flooding the home with natural light and additional sitting area space/built-in cabinets on the 2nd floor hallway. The second-floor hosts five spacious bedrooms, each with its own ensuite. The grand primary suite features a boutique-style dressing room, a fireplace, and a lavish 6-piece ensuite and large Walkin closet. The lower level is an entertainers dream with spacious recreation room, a home theatre, a wet bar, a gym, a wine cellar, an additional bedroom, a sauna, and a walk-up to the stunning backyard oasis, surrounded by mature trees. Perfectly situated, just steps from Crosby Park, Main Street Unionville, Toogood Pond, and top-ranked schools.