Alterations, Extensions, Conservation and Restoration of Historic and Listed Buildings. The practice is expert at working with historic buildings in sensitive environments, contact us to discuss your project.. LISTED BUILDINGS & CONSERVATION / BURNHAM OVERY STAITHE LISTED BUILDINGS & CONSERVATION / MANOR HOUSE, NORTHAMPTONSHIRE LISTED BUILDINGS & CONSERVATION / MANOR HOUSE, PETERBOROUGH LISTED BUILDINGS & CONSERVATION / WARMINGTON WATERMILL