6900 Rockingham Court Positioned on a premier corner cul-de-sac lot in gated Castleton Manor, this extraordinary updated estate presents a rare opportunity to own a private compound in the heart of Colleyville. Spanning 10, 026 sq ft across the main residence (8, 601 sq ft) and fully detached guest house ADU (1, 425 sq ft), the property blends scale, sophistication, and versatility on .921 acres. Originally designed and owned by a professional athlete, the home carries a sense of presence and legacy, now reimagined with light-filled interiors, soaring ceilings, and an open floorplan designed for elevated living and effortless entertaining. The main residence offers expansive living and dining spaces, including a formal dining room, breakfast area, and oversized island seating. The chef's kitchen with fireplace and wine storage flows seamlessly into the primary living areas, ideal for hosting and large groups. Additional highlights include: upstairs game room & play area with covered patio, private office, den with fenced patio to front yard, theater room, 2 versatile bonus rooms for use as a gym, yoga studio, craft space, home school, or more offices. The primary bedroom offers: sitting area with fireplace, en-suite bath, steam shower, 2nd laundry area, and large walk-in custom closet designed for storage & showcasing luxury items. The detached two-story guest house ADU offers a private retreat with covered patio, balcony, bedroom, full bath, kitchen with wet bar, and multiple living areas, ideal for multi-generational living, guests, or live-in staff. Outdoor living is elevated with a Claffey heated sports pool, spa, baby pool, fire & water features, safety gate; outdoor kitchen, 6 covered patios and balconies, plus a gated putting green and turf play area. Designed for privacy, scale, & effortless entertaining in one of Colleyville's most sought-after gated communities, this versatile home offers Everything for Everyone, a true lifestyle estate rarely found in today's market.