Every loft type, planning route, cost band, and approval pitfall in one place.
Side-by-side comparison of dormer and mansard lofts on London terraces.
Real cost bands for each loft type, borough by borough.
When PD applies, when it doesn't, and what trips up most applications.
When a £25k Velux job beats a £75k dormer — and when it doesn't.
Heritage Statements, design discipline, and approval rate by borough.