Welcome to 143 Portsmouth Circle, a beautifully updated end-unit luxury townhome located in the highly sought-after community of Greenbriar at Thornbury. Offering over 3,200 square feet of elegant living space, this meticulously maintained home features 3 spacious Bedrooms, 2 full Bathrooms, 1 half Bathroom, and a professionally finished Lower Level, combining comfort, style, and functionality. Recent upgrades elevate the home's appeal, including refinished hardwood floors throughout the Main Level and staircase, new designer carpeting on the upper level with a custom stair runner, chic Ballard Designs chandeliers in the Dining Room and stairwell, a new glass door to the Lower Level, and fresh paint throughout. The Kitchen has been thoughtfully enhanced with refinished white cabinetry, granite countertops, stone flooring, and a full suite of upgraded stainless steel appliances, including a double wall oven, gas cooktop, and French door refrigerator. Additional highlights include extensive millwork and an upgraded Sonos sound system for seamless audio throughout the home. The Main Level offers a welcoming floor plan featuring a formal Living and Dining Room - each with bay windows - an impressive two-story Family Room with a gas fireplace, and an open-concept Kitchen with sliding doors leading to a private paver patio, perfect for outdoor entertaining or relaxing. Upstairs, the luxurious Primary Suite includes crown molding, a ceiling fan, cozy window seat, and four generously sized closets (two walk-in and two double closets). The spa-inspired Primary Bath features a stall shower, jetted tub, and dual vanity. Two additional well-sized Bedrooms, a full Hall Bath, convenient second-floor Laundry Room, and a custom built-in Workspace Nook - ideal for a Home Office or Study area - complete this level. The finished Lower Level provides exceptional flexibility with ample space for a media room, gym, home office, or playroom, along with a large storage area. Enjoy low-maintenance living with HOA services covering lawn care, snow removal, trash, and common area maintenance. Situated in the award-winning West Chester Area School District and just minutes from the shops, dining, and cultural attractions of West Chester, Malvern, and Newtown Square, this home offers a rare opportunity to enjoy luxury living in one of the region's most desirable communities.