Building work is a big commitment. These guides explain how the process actually runs in Barnet and the Hertfordshire border — what needs planning permission, what it costs in 2026, and how a project moves from first survey to sign-off. No jargon, no sales pitch.
Loft conversion guides
The Loft Conversion ProcessThe full journey, step by step — survey, design, Building Control, construction and sign-off.
Loft Planning PermissionPermitted development vs a full application — what triggers which, and how long each takes.
Loft Conversion Cost Guide 2026Real price ranges by conversion type — Velux, dormer, hip-to-gable, mansard and L-shaped.
Planning Permission in BarnetCouncil-specific guidance — conservation areas, Article 4 directions and pre-application advice.