Smaller extensions can move faster
Compact extensions often sit in a different range to larger wraparound or double-storey projects.
Cost Guide
House extension cost guide
House extension costs can vary widely depending on size, structure, planning requirements, finishes and how much existing work needs to change.
Design choices shift the budget
Glazing, roof design, structural steel and internal finish standards all affect the final cost.
Planning and complexity matter
Access, planning status, existing drainage and making-good work can all influence builder quotes.
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