This plan shows the service block entered via a courtyard from the main house. Marginal sketches in Soane's hand also indicate his intentions for the exterior walls. One elevation shows a pedimented gated entrance set into the wall. This was presumably an entrance into the kitchen court from without having to pass through the main house. The other elevation shows the treatment for the elevation to the office wing which faced the house proper across the kitchen court. It incorporates a central pedimented portico containing an urn and two arched entrances on either side with niches containing sculpture arranged symmetrically on either side. It is evident from this that Soane was concerned with the appearance of the service wing. Given its close proximity to the house and that it could be seen from windows, a grander disguise was evidently thought necessary.
This drawing also relates in design to drawings 106 and 108, section 4 (dated 21 January 1801 and 5 March 1801 respectively).