Hargrave Builders, Inc. Building Relationships Since 1976 For over forty years, Hargrave Builders Incorporated, has served Northern Illinois. Hargrave has been providing expertise, resources and innovation through our General Trades, Union Carpentry and/or General Contracting services. We are active members of the Fox Valley Associated General Contractors, the Associated General Contractors of America as well as, the Elgin Area Chamber of Commerce. Our ability to be either one or both, a General Contractor or a Carpentry Subcontractor, we tailor our services to fit specific project requirements. We welcome all levels of construction from the smallest to the largest – repair or redesign, renovations, additions and completely new construction.