Have a Question, Need a Quote or Ready to Place an Order Fill out the form below and someone from Customer Service will contact you in 1 - 2 business days (Business days do not include weekends and/or holidays). Orders placed online: Customer is required to make 10% down payment when contacted by a USA Portable Buildings Sales Rep before Carport can be placed into production. Payment can be made by check, cash, money order or credit card. When contacted the Sales Rep will complete the order by verifying colors, options, delivery, payment method, etc.