Make One Call - Call The First, The Best - "The Cat Man” Welcome! La Tray Engineering Construction Co. Inc. is Marin County’s premiere choice for Construction, Engineering, and Excavation Services. Our qualified team of experts specializes in Tight Access Excavations and Drilling Operations. La Tray Engineering Construction services residential, industrial, and commercial properties throughout the Bay Area. For over 40 years, La Tray Engineering Construction Co. has remained a family owned and operated business dedicated to offering personalized customer service. Our clients’ happiness is our number one priority. Please contact us today by PHONE for a consultation. We look forward to hearing from you.