Used Portable Classroom Buildings from $49,500 Delivered! Great condition used classrooms great for schools, daycare, offices, storage buildings, additions, office building, modular buildings where ever you need affordable building options that don't break the bank. A new 24x32 classroom is over $160,000 . These buildings represent a huge savings compared to new. They were built approx 2006. They all have hvac systems, some have newer floors. We can install them together end to end to make a larger complex as well if that is needed. Call 519-741-6317 today to view these great used classroom buildings.