Built in 1868 by George M Harding 
Harding was an architect. In 1873 he was listed as working from his home on Deering Street but I have also found biographical information placing him in Boston in the same year.
Built ca: 1840
South Street runs from Pleasant Street to a concrete wall on the edge of Spring Street in Portland’s Gorham’s Corner neighborhood. South Street originally ran from Spring to Free Streets with the current section being laid out around 1830. This is the same time frame that our subject was built. The earliest parts of South Street were removed during the era of Urban Renewal and now lie under the Cross Arena.