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KCS Estates, led by Sophia Kabler Cowley, has been developing residential properties in Marin and Sonoma Counties since 2007 and is proud to have built the reputation to be considered a premiere, luxury brand. 

Residential design and construction has always been a personal passion for Sophia. She began cultivating her passion for home design with the purchase of her first San Francisco home with beautiful bones but in need of work. Craving a yard for her dog, and warmer weather, Sophia sold her renovated San Francisco home and bought a home in the Sycamore Park area of Mill Valley which of course also needed some loving attention (the exterior paint was purple if that gives you some idea).  Formerly a marketing and sales executive for Fortune 500 and consumer internet companies, Sophia led a busy,stress filled life. Inspired by her mother's battle with Ovarian Cancer, Sophia decided it was time to turn her hobby into her primary endeavor. 

Sophia is married to Brian Cowley and step-mother to twins, Mac and Payne. Her passion for home design is closely followed by her passion for her horses and entertaining. 

KCS Estates approaches development around Sophia's passion for both her family and social life with friends.  A KCS Estates property takes into account a family's evolving needs and encourages a social, active lifestyle. 

Proud to be known for its beautifully designed properties, well thought out floor plans, quality construction, integrity and high resale values a person can be confident in buying a KCS Estates home. 

KCS Estates homes are designed by KCS Inc., a Residential Design firm located in Mill Valley, California. You can learn more about KCS at