Hip-to-gable loft conversion costs in Worthing 2026: £45k–£65k. What's included, how the gable rebuild works, planning routes and timelines. This guide is written by PG Property Repairs and Renovations, an FMB and TrustMark accredited building company based in Worthing, using real costs and timescales from projects completed across Worthing, Lancing, Shoreham, Brighton and the wider West Sussex area.