Simpson-Lee House I is a heritage-listed residence located at 23 Roland Avenue, in the Sydney suburb of Wahroonga in the Ku-ring-gai Council local government area of New South Wales, Australia. It was designed by Arthur Baldwinson and built from 1958 to 1962 by George M. Koch. It is also known as Simpson Lee House. It was added to the New South Wales State Heritage Register on 27 November 2009.

Wahroonga is a suburb in the Upper North Shore of Sydney, in the state of New South Wales, Australia, 18 kilometres north-west of the Sydney central business district, in the local government areas of Ku-ring-gai Council and Hornsby Shire. North Wahroonga is an adjacent separate suburb of the same postcode.