Landscape architects are licensed by the State of California and, in addition to the plans typically provided by a landscape designer, are qualified to produce construction-ready plans that may include complex retaining walls, grading and drainage plans, and physical structures. Their training emphasizes design for large public and commercial spaces such as parks and commercial landscapes. Their fees are usually significantly higher than those of a landscape designer.
Landscape contractors are licensed to install the designs created by landscape designers and landscape architects. When working with a design/build firm, be sure to clarify the design process used and whether you will receive landscape drawings for your review and approval or just a verbal or written description of the landscape to be installed.