Drawings 142 to 145 appear to be some of the last extant designs for the elevations of Pitzhanger Manor. Indeed, they bear a very close resemblance to Pitzhanger as built.

Drawings 143 and 144, of the entrance front, are evidently unfinished and thus lacking in some detail. However, the front elevation is very close to the executed design, even down to the lion-relief roundels and central square relief.

All of the drawings apart from 142 include a lantern surmounting the roof, drawn in pen. This would have lit the attics from above. Although the lantern does not exist today, the support for it does, and it must have been the sole means of lighting the attic rooms at the time.The lawn front shown in drawing 145 is akin to the finished design, with the large rectangular windows of the basement and the balcony flanked by square blocks (to which Soane would add a conservatory).

Charles Malton was the son of Thomas Malton (1752-1804), but the only information available about the former is that he won the RA silver medal in 1807, as stated in Howard Colvin's A Biographical Dictionary of British Architects 1600-1840.