Planning a simple extension at the back of our house 10m x 2.5m (25 sqm) Rectangle nothing flashey. A building friend of ours has said about £45 per sq foot which seems ok. It's the architects fees that seem a bit hefty. Any one advise please. Fees quoted are; Dwelling survey fee; £250 Planning/drawing design; £650 Working drawings; £900 Tendering; £250 Site inspections/ completion cert; £750 He also requires land survey; £300 +Structural survey; £600 All plus vat Just wonder as these figs are about half that a friend paid for a 200 sqm house. Any thoughts?