Firshill Avenue is shown as under development on the 1938 6 inch OS map. Previously the site has the character of parkland, probably associated with either Firs Hill House or Norbury Hall. Taylers map of 1832, which shows part of the area, details regular edged enclosures whilst the Fairbanks plan of 1795 show a large open space. This suggests that the area was enclosed under the parliamentary award for Brightside in 1795. Legibility is invisible.