941 Sir Constantine Drive Premier address in the heart of Castle Hills, there's no better location to enjoy all that the community has to offer. Close enough to effortlessly walk the kids to school or stroll to dinner while maintaining your privacy on a quiet street. Stand out from the crowd in this incredible colonial inspired traditional home. The expansive brick front porch sits atop the rooflines, perfect for watching colorful Texas sunsets from the porch swing. The property includes a main house and detached casita. Desirable configuration for long term guests, multi-generational families, au-pair, second home-office or studio. The main house is 4 bedrooms, 4 bathrooms with primary bedroom downstairs. The detached structure includes a three car garage with 728 SF second story casita, for a total combined interior square footage of 4, 977. Brand new primary bathroom with oversized wet room and walk-in closet. All new lighting & plumbing fixtures, downstairs HVAC replaced in 2026. Perfect sized yard for adding the pool & outdoor kitchen of your dreams. Castle Hills is a master planned community weaved into the golf course landscape. The neighborhood offers year-round recreation, including 7 community pools, 26 parks and playgrounds, tennis courts, pickle ball, sport courts, over 7 miles of walking trails and the opportunity to join the private Lakes of Castle Hills Country Club. Top rated golf, tennis, fitness center, resort style pool with food & beverage service, lifeguards, dinner events and gorgeous views are just a few of the perks of the club membership. Minutes from Grandscape, The Star Frisco, PGA Headquarters, DFW Airport, Legacy West and more. Hand-delivered daily mail service.