Double storey or two storey extensions create the most space in your home, giving twice the space of other types of extension. They open up a huge amount of space (whether as a side return, rear or wrap-around extension) as they run across two floors, allowing families an increase in their living space as well as additional room upstairs for an extra bedroom or perhaps an en-suite for the master bedroom. As your family grows, you may find yourself needing more space than your house can accommodate. However, moving house in UK can be expensive and stressful, with high competition for every single property. A double storey extension allows you to create more space both upstairs and downstairs, as well as adding value to your property overall.