| RHP708 | An accurate map of the County of Middlesex, Emgland | [18th century] |
| RHP1911 | Plan of Norlands Academy 2 miles from London on the Oxford Road, Middlesex, England | [c 1761] |
| RHP11197 | Plan of the Angel Park Estate, Edmonton | 1882 |
| RHP13256 | Architectural drawings of proposed houses and proposed improvements to houses in England, Scotland and France | 1711-1732 |
| RHP13256/67 | Plan of the grounds at Twickenham, Middlesex, England | Oct 1711-Apr 1719 |
| RHP13256/68 | Ground plan of house and gardens at Twickenham, Middlesex, England | Apr-Oct 1719 |
| RHP13256/69 | Basement and ground floor plan of house C | Jun 1727 |
| RHP13256/70 | Upper floor and roof plan of house C | nd |
| RHP13256/71 | Front elevation of unidentified house | nd |
| RHP13256/84 | Garden elevation of James Johnstone's house at Twickenham, Middlesex, England | Jun 1721 |
| RHP20636 | Map (4 sheets) of the county of Middlesex: 1818-19, published in 1819. (Vignette of view of London from roof of Buckingham Palace). | 1818-1819 |
| RHP35180 | Architectural drawing of a hen-house at Whitton | 1759 |
| RHP35181 | Architectural plans and elevation of an unidentified two-story house | [18th century] |
| RHP38019 | Plan of the proposed arrangement of buildings and grounds at the British Empire Exhibition, Wembley, Middlesex, England | 1924 |
| RHP38348 | Ordnance Survey. 6 inch plan marked to show line of proposed railway [of London Electric Railway Company] from Edgware to Watford | 26 September 1924 |
| RHP38357 | Ordnance Survey. 6 inch plan marked to show site of proposed new station near Edgware Bury [British Railways]. | 1949 |
| RHP38398 | Map of Mill Hill and district. | 1923 |
| RHP38414 | Map of Harrow district. | 1923 |
| RHP72752 | Super Calender No. 939 for Thomas Illingworth & Co. Ltd, London: General Arrangement. | 1915 |
| RHP72784 | Super Calender No. 1028 for Harrisons & Sons Ltd, Hayes: General Arrangement. | 1933 |
| RHP72917 | Twin Cylinder Drying Machines Nos. 589-592 for Express Dairy Company Ltd, London: General Arrangement. | 1949 |
| RHP83468 | Sketch plan of lands at Potters Bar | [Early 19th century] |
| RHP83469 | Another version of RHP83468, possibly a partial copy or draft of later date with less detail | [Early 19th century] |
| RHP89660 | Plan of residential properties at Stamford Hill, attached to sale particulars | 1875 |
| RHP93649 | Plan of London Docks between London Bridge and Woolwich, showing proposed additions to Wapping and cut to Blackwall | 1794 |
| RHP93655 | Plan of the military encampment on Chobham Common, with inset plans of the encampment (enlarged) and the surrounding railways | 18 Jun 1853 |