Sio Family House is a Registered Property, Municipality of Paoay, Ilocos Norte located at Paoay, Ilocos Norte, Region I.
The Galarce-Sio family house is the largest modern style concrete and wood house and is the only true example of an art deco building in Paoay. The external staircase features geometric metal railings, the facade contains linear designs (covered by signages), an open space balcony with metal railings on the second floor, as well as high concrete columns/posts on the first floor. True to Chinese tradition of house planning (shop house), the lower floor has been compartmentalized into quarters that were rented out for commercial purposes. The second floor is the actual living space of the family. The longest running pharmacy in town is the Farmacia Sio. Primo Sio also served as a mayor of the town in the mid 70s.