For 65 years, OGS Landscape has been a leader in the design and build of outdoor living spaces for families looking to create memories, entertain and build the perfect backyard getaway. Founded in 1953 by Rene Thiebaud Sr., Oshawa Garden Service (OGS) quickly became the areas most trusted Landscape Services Firm for design & build landscape services. A relocation in 1966 brought OGS to its current location on Thickson Rd. Since then, OGS has become Durham Region's go-to full service luxury landscape design & build company. A third generation of the Thiebaud family, Rene's two sons, ...