A & D Quality Construction Co., LLC, is a General Contracting firm licensed in the State of Washington since 1991. The company is owned and operated by Keith Demps Sr. and Annette Demps. A & D performs infrastructure services in both the private and public sectors.
Past private projects consisted of acquiring and developing land to build tracts of single-family homes, apartment complexes, churches, and mixed-use residential/commercial buildings.
Projects normally ranged in size from $300,000 to $3,000,000.
A & D has expanded its services into the public works sector. Their self-performing scopes consist of, demolition, excavation, clearing, grading, concrete, underground utilities, and tenant improvements. A few of A & D clients are Sound Transit, WSDOT, Bellevue College, and the City of Seattle.