Here’s a bit of historical bumf that we’ve gleaned from the web. Feel free to let us know more if you feel like sharing!

Auchterhouse Park was originally built as a sanatorium in 1901/1902. It was converted into residential flats sometime around 1986, and was designated as a category-B listed building in 1992, according to information available from Historic Environment Scotland.

There’s a fantastic article outlining the history of the Sanatorium on the local Auchterhouse Community’s web-site.

Alternatively, according to Wikipedia:

On 2 May 1899 a meeting was held at the Town Hall in Dundee to establish a sanatorium for the treatment of tuberculosis (then known as consumption). Plans were drawn up for the creation of a 30-bed hospital, and a site at Auchterhouse Park was gifted by David Ogilvy, the Earl of Airlie. Construction started in 1901, and Dundee Sanatorium was formally opened by his widow Mabell Ogilvy, Countess of Airlie^[17] on 26 September 1902, at a cost of £20,764. The Dundee Advertiser commented:

The establishment of institutions of this kind has been very much encouraged by the unanimous approbation of the medical profession all over the country. That this disease is no longer regarded by the medical profession as either hereditary or as incurable – hence the establishment of these sanatoria all over the kingdom – is a circumstance that is calculated to bring an element of hope to those sufferers, and be a source of satisfaction to their relatives and friends. The Institution so auspiciously opened today enters upon its course of usefulness and will shelter and bring healing to very many of our afflicted sisters and brothers.^[18]

The first patients were admitted on 11 March 1903, and the following year the institution was renamed the Sidlaw Sanatorium. During the first year of operation, 87 patients were admitted. One patient died, but 67 were discharged. The average stay was just under four months. By 1907 the sanatorium was making a yearly loss of between £500 and £700, and the annual report complained that although the institution was endowed to help the working classes of Dundee, it was not possible to do this due to the need to accept paying patients to contribute to the costs. By 1909 the financial position was so serious that the directors agreed to close the sanatorium the following year, but Sir James Caird, the Dundee jute baron, agreed to provide £1,000 per year if the institution was taken over by Dundee Royal Infirmary, and the transfer was completed in October 1910. The sanatorium eventually closed in 1969 but continued as an NHS convalescent and respite care home until 4 November 1980 (according to the national archives).^[18][19][20]