Cemtek Concrete Arroyo Grande, CA, 93420 805-801-8256 We are a locally owned company, that prides itself on prompt customer service and top quality work. With 30 years of trade experience, we're confident that we can provide you with exactly what you're looking for. Whether it be custom stamped concrete, a retainer wall, or a foundation, we can take care of all! Driveway foundation, patios and sidewalks, retaining walls, stamped concrete, curbs, concrete ceiling asphalt, ...