There are many ways to reduce the cost of building a house. If you're looking to convert a loft into a bedroom or office space, you'll want to consider a L-shaped conversion https://www.fittra.co.uk/our-services/loft-conversion/l-shaped-dormer/ . This type of Loft Conversion is most convenient when it comes to construction, as it allows for a much more efficient use of space. However, there are a few cons to this type of Loft Conversion, such as the need for planning permission.