20 St Andrewgate is a historic house in the city centre of York, in England.
It shares similarities with other buildings by the architect Thomas Atkinson, and he is recorded as its first occupant.
The house is large, with three storeys and a five bay front to St Andrewgate.
However, it was built cheaply, using common brick, with limited decoration both internally and externally.
It has its original doorcase, and the first floor window above has a decorative stucco surround.