| RHP15089 | Plan of branch of the Caledonian Railway from Symington to Biggar and Broughton: 1846 | 1846 |
| RHP27745 | Plan, section and elevation of bridge over the Biggar Water [Caledonian Railway]. | 1900 |
| RHP39931 | 1. Bound plan and sections of the Symington, Biggar and Broughton Railway. 2. Book of reference 3. Gazette notice 4. Duplicate of no. 1 | 1857 |
| RHP45738 | Architectural drawings of proposed alterations to Biggar Manse, Lanarkshire | Jul 1895-Feb 1896 |
| RHP45738/1 | Biggar Manse, Lanarkshire: plan of ground floor | Jul 1895 |
| RHP45738/2 | Biggar Manse, Lanarkshire: plans of first and attic floors | Jul 1895 |
| RHP45738/3 | [Biggar Manse, Lanarkshire]: details of foundations | Feb 1896 |
| RHP45739 | Plans of Clydebank Free Church Manse, Dunbartonshire and Biggar Parish Church Manse, Lanarkshire | Feb-Mar 1896 |
| RHP45739/1 | Clydebank Free Church Manse, Dunbartonshire and Biggar Parish Church Manse, Lanarkshire: block plans | Mar 1896 |
| RHP45739/2 | Biggar Parish Church Manse, Lanarkshire: upper and ground floor plans | Feb 1896 |
| RHP45739/3 | Biggar Parish Church Manse, Lanarkshire: plan of attic and transverse section | Feb 1896 |
| RHP45739/4 | Biggar Parish Church Manse, Lanarkshire: plan of ground floor | Feb 1896 |
| RHP45739/5 | Biggar Parish Church Manse, Lanarkshire: plans of the first and attic floors | Feb 1896 |
| RHP45739/6 | Biggar Parish Church Manse, Lanarkshire: detail of foundation | [1896] |
| RHP48925 | Photocopy of plan and sections of march between estate of Skirling and lands of Spittal and Heavyside | 1841 |
| RHP49118 | Photocopy of plan of Biggar Estate, with table of contents | 1827 |
| RHP76645 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXVII.SW) marked to show farm boundaries | [1944-1945] |
| RHP76661 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXXIII.NE) marked to show farm boundaries | [1944-1945] |
| RHP76721 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXXIII.SE) marked to show farm boundaries | [1944-1945] |
| RHP76722 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXXIV.NW) marked to show farm boundaries | [1944-1945] |
| RHP76723 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXXIV.NE) marked to show farm boundaries | [1944-1945] |
| RHP76724 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXXIV.SW & SE) marked to show farm boundaries | [1944-1945] |
| RHP76795 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXVII.SE) marked to show farm boundaries | [1944-1945] |
| RHP84609 | Architectural plans, elevations and section, with site plan, of proposed improvements to workmen's houses at Biggar (British Railways) | [c 1948] |
| RHP84752 | Architectural plans, elevations and section, with site plan, of proposed additions and alterations to workmen's houses at Biggar (London Midland and Scottish Railway) | [c 1923] |
| RHP88808 | Plan of Shieldhill Estate for sale by auction, annexed to sale particulars (annotated) | 1960 |
| RHP88879 | Plan of Biggar Estate, with table of contents | 1827 |
| RHP88880 | Architectural plans of ground and first floors of house at Heavyside, Biggar, the property of Dr [John] Blackwood Murray | [Early 20th century] |
| RHP88881 | Plans of Heavyside Estate, Biggar, the property of Dr [John] Blackwood Murray | 7 May 1921 |
| RHP88882-88883 | Ordnance Survey 1/2500 plans (Lanarkshire, sheets XXXIV.10 and 14) marked to show boundaries of Heavyside Estate, land sold, land acquired etc | 23 May 1899 |
| RHP93278 | 1. Architectural plan and pictorial elevation of a motor car shed at Carwood for Mrs Dennison Mitchell: 15 March 1911
2. Estimate of cost | 15 Mar 1911 |
| RHP93279 | Plan showing proposed augmentation of water supply on Carwood Estate | 27 Aug 1913 - 12 Mar 1915 |
| RHP97090 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXVII.SW) coloured to show classification of land | [1944-1954] |
| RHP97091 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXVII.SE) coloured to show classification of land | [1944-1954] |
| RHP97109 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXXIII.NE) coloured to show classification of land | [1944-1954] |
| RHP97111 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXXIII.SE) coloured to show classification of land | [1944-1954] |
| RHP97112 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXXIV.NW; Peeblesshire, part of sheet XI) coloured to show classification of land | [1944-1954] |
| RHP97113 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXXIV.NE) coloured to show classification of land | [1944-1954] |
| RHP97114 | Ordnance Survey 6 inch plan (Lanarkshire, sheet XXXIV.SW & SE; Peeblesshire, parts of sheets XI & XV) coloured to show classification of land | [1944-1954] |
| RHP99010 | Bound plan and sections of Symington, Biggar and Broughton Railway relating to Broughton Parish, from Biggar Burn to Broughton, with book of reference attached | 1846 |
| RHP99013 | Scroll working plan of Symington, Biggar and Broughton Railway from Biggar Park to Easter Place | 1858 |
| RHP99018 | Plan of layout of Biggar Station | c 1858 |
| RHP99019 | Section of road to Biggar Station House | 19 Apr 1860 |
| RHP99024 | Sketch cross sections of line at Coulter Station and Biggar sidings and of roads relating to Symington, Biggar and Broughton Railway | c 1858 |
| RHP99073/3 | Bridge no. 3 | c 1859 |
| RHP99073/4 | Bridge no. 4 | c 1859 |
| RHP99073/5 | Tracing bridge no. 4 | c 1859 |
| RHP99073/6 | Bridge no. 5 | c 1859 |
| RHP99073/7 | Bridge no. 6 and bridge over the Kilbucho Burn | 6 Sep 1859 |
| RHP99074/1 | Bridge near Peg 18 and culvert | Oct 1858 |
| RHP117126 | Technical drawing of bridge carrying A702 over railway between Coulter and Biggar (London Midland & Scottish Railway) | [c1933] |
| RHP142745 | Plan of Biggar burgh boundary extension | Nov 1962-24 Mar 1964 |