Typically beds come disassembled to help overcome this challenge. The headboard, footboard and side panels come in long but thin panels. The slats can come as one or two pieces so it is worth checking you have sufficient access into the house for this part. Tight stairs/turns in corridors can be problematic. Mattresses are generally large, but if access is limited one option is to order two single mattresses (ideal if you two people who have different preferences) and then a topper can be used to mask the join. Rolled up mattresses are another option. So, despite the perception of a large item the parts can be broken down into packages that usually fit into most homes. Another option if there is still a problem is to ask us for a quote to use external lifting services to deliver the room through a window or balcony directly into your home.