23 Watton Road Knebworth Hertfordshire SG3 6AHReference26/01923/FPHLocal authorityNorth HertfordshireAddress23 Watton Road Knebworth Hertfordshire SG3 6AHProposalRear roof extension including insertion of rear dormer window and side rooflights to facilitate additional accommodation at first floor level following removal of existing rear dormer window.StatusApprovedValidated2026-07-31More planning applications in North Hertfordshire