How Much Does a Side Return Extension Cost?
Building costs for side return extension costs can depend on numerous factors, from size and roof design to property type (costs can sometimes vary for terraced and semi-detached houses). For example, a medium-sized side return extension with a flat roof has an estimated average cost of £68,000.
All of our estimated costs include construction costs, plumbing and electricity, glazing and internal doors and applicable VAT. We will remain as transparent as possible regarding additional costs.