Patricia O'Brien Landscape Architecture based in California and cover all areas. Patricia O'Brien Landscape Architecture has been working throughout the California state for many years and has many years of experience working in Architectural & Engineering Services. Patricia O'Brien Landscape Architecture offer a full Architectural & Engineering Services. The Staff have expert Architectural & Engineering Services skills, which enable them to carry out minor to major Architectural & Engineering Services projects. Formed in 2000 , Patricia O'Brien Landscape Architecture specializes in Architectural & Engineering Services.