Diamond Design Precast, Inc. was founded in the mid-1980’s in Arlington, Washington as a local manufacturer of precast concrete stair treads. Over the last 30 years, we have grown to become the Pacific Northwest’s leading manufacturer of standard and custom architectural precast concrete landings and pavers as well as a diverse line of custom precast architectural offerings with an unwavering reputation for high quality products and outstanding customer service.  

Diamond Design Precast, Inc. manufacturing and distribution is currently headquartered in Arlington, WA and can ship to sites across the PNW and additional select regions.