Site selection requires well-drained soil, convenient access for deliveries, and proximity to utilities. Orientation north-south provides most even light distribution throughout the day. Size should match crop production goals and budget constraints. Adequate ventilation prevents heat buildup and maintains air quality. Durable materials appropriate for local climate reduce long-term maintenance. Consider future expansion needs when planning initial layout. Standard widths of 20-35 feet allow efficient use of bench space while maintaining structural economy.