I know that some sets are more intermediate than others. I am so sorry! We have temporarily removed the option to add assembly at the time of purchase to give the third party installation company, Go-Configure, a chance to catch up. You can contact the assembly company after the fact to purchase an assembly service if you like, but they may have to schedule you far out. You can reach them at 888-888-5424. They will have information on where they service as well as wait times. Here is some helpful information that they provided us with: https://media.backyarddiscovery.com/Expectations-for-a-successful-service-GCI.pdf