After retiring from military service in 1893, Lumsden settled in Dufftown, Banffshire, Scotland. Despite his retirement, he continued to contribute to public service and local affairs, serving as a justice of the peace and Deputy Lieutenant for Banffshire and Aberdeenshire. Lumsden's commitment to his country and the British Empire left a lasting impact on India and its military history. On his 89th birthday, November 9, 1918, Sir Peter Stark Lumsden passed away in Dufftown, Banffshire. His distinguished military career, notable appointments, and contributions to public service make him a significant figure in British military history. His legacy as a skilled leader and his service to the nation continue to inspire future generations.