Walter L. Phillips is a civil engineering and planning firm. It serves several clients in the commercial, industrial and residential sectors. The firm offers a range of land development engineering services, such as earthwork analysis, construction coordination, and parking lot, street and highway design. Walter L. Phillips also provides various landscape architecture solutions, including tree conservation planning and streetscape and gateway feature design. It conducts feasibility studies, as well as offers land surveying and planning services. The firm serves the metropolitan Washington area. In addition, Walter L. Phillips prepares subdivision and conceptual development plans, as well as provides zoning assistance solutions.