Examination of existing GSE site and building layouts and specific building elements lead to keys to improved GSE maintenance productivity that can be created with proper building design: Which site layouts provide proper staging and storage areas? Which building configurations help create the most efficient operations? What special building design features and equipment help to expedite vehicle throughput?Conclusions are drawn from design and construction experience, and from the examination of existing facilities, that provide guidelines for planning the new facility. How big should the facility be? How does air traffic growth influence GSE maintenance planning? What factors should be considered in planning a GSE maintenance facility? The paper also offers a brief checklist for the GSE Maintenance Facility planning process.