Welcome to 3521 40th Street SW, an exceptional semi-detached infill offering 1,954 sq ft of refined above-grade living space in the established community of Glenbrook. Facing a park with no homes directly across the street, this beautifully crafted residence pairs timeless white Hardie Board siding with sophisticated finishes, thoughtful design and impressive attention to detail. Step inside to 10-foot main-floor ceilings, engineered hardwood flooring that continues upstairs and along the staircase, and an open-concept layout designed for entertaining. A striking glass-walled office offers a stylish, light-filled workspace. The showpiece kitchen blends crisp white cabinetry with a contrasting white oak island, complemented by quartz countertops, a waterfall edge, a quartz backsplash and premium JennAir appliances. The living room brings warmth and character with a gas fireplace framed by tile and an MDF mantel, alongside custom white oak built-ins. Just beyond, a full-width concrete patio extends your living space outdoors, surrounded by a fully landscaped yard. Upstairs, the primary suite is a tranquil retreat with vaulted ceilings and a walk-in closet fitted with custom cabinetry. The spa-inspired ensuite offers a double vanity, freestanding soaker tub, steam shower and heated floors. Two additional bedrooms, each with custom built-in cabinetry, a beautifully appointed 4-piece bathroom and convenient upper-floor laundry complete this level. Downstairs, the attention to detail continues. Built with 10-foot foundation walls, the finished basement delivers true 9-foot ceilings without dropped bulkheads—a remarkable sense of openness. A spacious recreation room with a custom media wall is complemented by a wet bar featuring quartz countertops and a bar fridge. A dedicated approximately 11' x 12' gym, enclosed by a glass wall and finished with mirrors and durable gym flooring, makes staying active at home effortless. A fourth bedroom and full bathroom add flexibility for family and guests. Construction details include Rockwool Safe'n'Sound insulation and double drywall in the shared wall, designed with acoustic comfort in mind. The fully insulated and drywalled double garage features EV charging, while indoor and outdoor built-in speakers, A/C rough-in and new home warranty add to the home's appeal. With Glenbrook School, A.E. Cross School and a variety of shopping options within walking distance, this park-facing home combines elevated craftsmanship with everyday convenience. Schedule your private showing and experience a distinctive Glenbrook infill for yourself.