Located in King City, Ontario, north of Toronto, the success of the stable would see it expand to the United States with the acquisition of a 660-acre (2.7 km2) farm and training center near Ocala, Florida.
Located in King City, Ontario, Kinghaven became a father/son operation in 1974 when Bud's son and current president David Willmot began managing the farm's Thoroughbred racing/breeding programs.
Kinghaven continued to produce champions and stakes winners until 2011, but during this time, the farm's operations were scaled back significantly due to David's management responsibilities at the Ontario Jockey Club/Woodbine Entertainment Group; he was president and CEO from 1995 to 2010, then chairman from 2001 to 2012.
With David's wife Susan, and son Jay, serving as Vice Presidents, the farm has begun expanding its business into multiple areas, including renewable energy and apiculture.
Kinghaven maintains its roots in the equine industry through Standardbred breeding and ownership, where it has owned, in partnership, champions Southwind Allaire, Cabrini Hanover and Solar Sister.