The Designer Builders Team

Created in 1980 by Ray Rumancik, Designer Builders started as a small company providing renovation, decorative fence, and deck building contracting services. Ray and his son Stefan combined their efforts in the 1990s and the company is now led by Stefan Rumancik. In the past decade, Designer Builders has expanded its contracting services to include custom remodeling, green remodeling, house additions, and beyond.


Stefan Rumancik was born into a family of builders in Danville, Kentucky. Led by the expertise of his father, he developed an early love for the trade as well as an appreciation for conservation and sustainability. Stefan took over Designer Builders in his early twenties and has transformed it from a 2 person company to one that now employs 6 full-time and 5 part-time staff, concentrating on sustainable building practices and high-quality craft. Stefan holds the designation as a Registered Remodeler with the Building Industry Association of Greater Louisville. Stefan enjoys time with his wife and daughter, biking the parks of Louisville, and live concerts. He also enjoys renovating his own 1930s home in historic Audubon Park.

Lead Carpenter & Service Technician

Jason Hall has been working as a carpenter in residential remodeling for 12 years. His previous experience includes foreman positions with non-profit foundations including Habitat for Humanity. His wife’s promotion moved him from Kansas to Louisville in 2012, when he started with Designer Builders Inc. Jason is not only our lead carpenter and service technician, but he also applies his skills as an enthusiast photographer by capturing our projects for the website portfolio. Jason enjoys music, local festivals, and competitive bearding.