This guide explains typical house extension costs and construction stages for residential projects in
Cambridge and nearby Cambridgeshire towns. Prices reflect current labour costs, material
requirements and structural work commonly involved in single storey and multi storey extensions.
• Site preparation and excavation
• Foundation and concrete base installation
• Structural walls and brickwork construction
• Installation of steel supports where required
• Roof structure and waterproofing
• Windows and external doors
• Electrical and plumbing installation
• Plastering and interior finishing
Extension costs can vary depending on soil conditions, depth of foundations, design complexity, roof structure, glazing systems, and internal finishing materials. Planning permissions, building regulations approval and structural engineering calculations may also influence project cost.
We offer free site visits and written quotations for carpentry and joinery projects across Cambridge