This unit first took its present structural form after the laying out of Erskine Road between the 1923 and 1934 editions of OS 25 inch sheet 289.07. By the 1938 survey most of the present buildings have been constructed. This area was previously part of the lands to the west of Eastwood Road which is shown on the 1854 OS six inch map which were redrawn after the Private act of Parliament granted to the Earl of Effingham in 1850 (Munford 2000, 117). George Kelk's map shows a pattern of straight surveyed enclosures to the west of Eastwood Road. Placenames in this area are suggestive of meadow land.