Winterbrook House near Wallingford was home to the world's best-selling crime author, Dame Agatha Christie and her archaeologist husband Sir Max Mallowan from 1934 until her death in 1976. Archive picture Winterbrook House (Image: NQ)READ MORE: 'Devoted' husband and father killed in Cotswolds fireThe couple were buried in St Mary's Church graveyard in Cholsey, and a statue of Agatha Christie was installed on a bench in the Kine Croft park in Wallingford in 2023 to celebrate her legacy. A new planning application has now been submitted, proposing changes to the grounds of the home. The rear of Winterbrook House, where the orangery is proposed (Image: Noto Architects Ltd / South Oxfordshire District Council)The application specifies that Winterbrook House would remain a 'single private dwelling house', and the addition of the orangery to its five acre grounds would only be a 'modest extension'. South Oxfordshire District Council has the plans under consideration, and comments can be left on the application before the consultation closes on September 7.