Drawings SM 29/5A/1 and SM 29/5A/2 are copies of presentation drawings delivered to the client by John Sanders on 8 April 1790 (Ledger C). A similar plan and front elevation (with plans of the upper floors) were published in Soane's Sketches in architecture, 1793, plates XXII-III. Soane's published design is an inverse of drawing SM 29/5A/2 with, for example, the bowed eating room on the left-hand side. The published plan also does not include the offices.

Drawings SM 29/5A/1 and SM 29/5A/2 show the same plan and elevation as Soane's preliminary design, drawings SM volume 42/156 and SM volume 42/157, except for a variation in the stairwell and the arched passage between the entrance hall and stairs. As noted on drawing SM volume 42/157, the secondary portico has been omitted in this design. The 'Writg Closet' in drawing SM volume 42/157 has been labelled as a strong closet in drawing SM 29/5A/2.