Stewart Companies


From the smallest backyard patio to the city’s tallest building, the start of any construction project relies on top-quality building materials.


Our materials manufacturing businesses provide critical resources for construction projects across the eastern USA and Western Colorado. They manufacture sand & gravel, crushed stone, asphalt, concrete block, ready-mix concrete, hardscapes, and colored mortars.

A full-service ready-mix concrete company serving Western Colorado.
Chesapeake Minerals uses select grades of quartz gravel supplied by York Building Products Co.
A full-service ready-mix concrete company serving southeast Pennsylvania and the Delmarva Peninsula.
Manufactures concrete pavers & slabs, retaining wall units and outdoor living kits.
Produces asphalt products throughout Cecil County, MD, southern Chester County, PA, and New Castle County, DE.
Providing sand and gravel to the construction industry throughout Western Colorado.
Manufactures colored cements for masonry in a variety of formulations and over 60 colors.
Manufactures concrete masonry products, retaining wall block, sand & gravel and crushed stone.
Produces asphalt products through four plants, conveniently serving York and Adams counties in Pennsylvania.