How many moving boxes do I need for a house or flat move? As a general guideline for UK home moves: a 1-bedroom flat requires 15 to 25 boxes, a 2-bedroom house/flat requires 25 to 40 boxes, and a 3-bedroom house requires 40 to 60 boxes. Mix medium heavy-duty double-walled boxes for books and fragile items with larger boxes for lightweight bedding and clothes.