Niddry Castle is a scheduled ancient monument and a Category A listed building. It comprises a large and imposing late fifteenth to early sixteenth-century L-plan tower house. After many years of abandonment and decline, the castle had become largely ruinous by the late twentieth century, with only limited repair work carried out.

In 2006, GRAS was appointed by the new owners to conduct a detailed survey of the building and assess the extent of repairs and remedial works required. GRAS also prepared and submitted an application to Historic Environment Scotland for grant funding, which was successfully awarded, providing generous support for the project.

Following the securing of necessary consents, a comprehensive programme of external and internal conservation and repair was undertaken. Key works included the rebuilding of the gable walls and parapets, extensive masonry repairs, and the complete renewal of the roof covering. These careful interventions respected the historic fabric and architectural significance of the castle.

The project was completed in 2010, returning Niddry Castle to full occupation and securing its long-term future as an important part of Scotland’s built heritage.