Scheduled Monument

Thomaston CastleSM7865

Status: Designated


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Date Added
Supplementary Information Updated
Secular: castle
Local Authority
South Ayrshire
NS 23978 9515
223978, 609515


The monument comprises the substantial remains of a large L-plan castle probably dating from the beginning of the 16th century and believed to have been built for the family of Corry of Kelwood. It is said to have been inhabited until ca. 1800.

A small, square staircase tower stands in the re-entrant angle and rises to a corbelled-out parapet. An arched pend, still extant, leads through the smaller wing and would once have given access to the courtyard and, from the courtyard, to the main entrance in the stair tower. The basement floor contains four vaulted cellars in the main block and one in the wing.

The first floor appears to have been divided into a hall and private room in the main block, and a bedroom in the wing. Archaeological survey and monitoring undertaken during work to insert a pipeline to the W of the castle in 1997 revealed the presence of wall footings, one of which may be interpreted as comprising part of the castle's barmkin wall.

The area to be scheduled is nearly square in shape with maximum dimensions of 80m NE-SW by 80m NW-SE to include the castle and an area of ground around it within which associated remains are believed to survive. From the N-most point of the scheduled area the boundary runs along the W side of a stone boundary wall for 30m. The wall itself is excluded from the scheduling.

The scheduling boundary then runs for 3m along the S side of an adjoining wall. This wall too is excluded from the scheduling. The boundary then runs SE for 30m at a distance of 2m from the buildings which lie to the E of the castle. It then continues on the same orientation for a further 20m until it meets the field boundary which runs parallel to the road.

The boundary follows the line of the field boundary for 85m before turning NW for 80m. It then turns NE for 70m to meet the starting point. The area is marked in red on the accompanying map extract. Excluded from the scheduling are the pheasant runs which lie to the NW of the upstanding remains and the fence which lies to the W.

Statement of National Importance

The monument is of national importance as the substantial remains of a 16th-century L-plan tower house which retains considerable potential to enhance our knowledge of Scottish domestic architecture of that period.




Davis, M. C. (1991) The Castle and Mansions of Ayrshire, 388.

MacGibbon, D. and Ross, T. (1889) The Castellated and Domestic Architecture of Scotland, Vol. III, 289-90.

About Scheduled Monuments

Historic Environment Scotland is responsible for designating sites and places at the national level. These designations are Scheduled monuments, Listed buildings, Inventory of gardens and designed landscapes and Inventory of historic battlefields.

We make recommendations to the Scottish Government about historic marine protected areas, and the Scottish Ministers decide whether to designate.

Scheduling is the process that identifies, designates and provides statutory protection for monuments and archaeological sites of national importance as set out in the Ancient Monuments and Archaeological Areas Act 1979.

We schedule sites and monuments that are found to be of national importance using the selection guidance published in Designation Policy and Selection Guidance (2019)

Scheduled monument records provide an indication of the national importance of the scheduled monument which has been identified by the description and map. The description and map showing the scheduled area is the legal part of the scheduling. The statement of national importance and additional information provided are supplementary. These records are not definitive historical or archaeological accounts or a complete description of the monument(s).

The format of scheduled monument records has changed over time. Earlier records will usually be brief. Some information will not have been recorded and the map will not be to current standards. Even if what is described and what is mapped has changed, the monument is still scheduled.

Scheduled monument consent is required to carry out certain work, including repairs, to scheduled monuments. Applications for scheduled monument consent are made to us. We are happy to discuss your proposals with you before you apply and we do not charge for advice or consent. More information about consent and how to apply for it can be found on our website at

Find out more about scheduling and our other designations at You can contact us on 0131 668 8914 or at


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