Welcome to 13 Old Castle Drive, a stunning, fully reimagined Colonial set on 1+ level acre lot and nestled on a peaceful cul-de-sac in one of Newtown's most sought-after neighborhoods with scenic views of the Borough. Thoughtfully transformed over the past three years, this elegant 4-bedroom, 2.5-bath residence combines timeless architecture with upscale modern living across 4,300+ square feet of beautifully finished space. Step inside to find refinished hardwood floors flowing throughout, fresh interior paint, and designer lighting that elevates each room. Remodeled gourmet, eat-in kitchen-with top-of-the-line Viking appliances, Quartz countertops, an expansive 10'x4' center island, walk-in butler's pantry with sink and beverage fridge. A double-sided gas fireplace connects the kitchen to the dramatic vaulted-ceiling family room, which features double sliding glass doors that open to new patio and decking. Main level also includes an oversized foyer with French doors leading to a music room or office, den space, inviting formal Dining Room along with a stylishly updated powder room. Upstairs, the primary suite boasts a new custom walk-in closet, full bath with spa-like ambiance. Renovated hall bathroom serves the additional 3 bedrooms with style and function. New Andersen windows and French doors on the main level, and Harvey replacement windows upstairs. Finished lower level with a home gym, media room, designer laundry with barn door, and mudroom and generous storage.