To make up a full 18-hole round, holes 1-3 were played again as the 16th, 17th, 18th. As this created severe congestion on the 1st / 16th tees efforts started in 1919 to acquire land north of the course for the final three holes. The Duke, as landlord, was not prepared to pressure his tenant farmers to relinquish prime agricultural land so it was not until 1936, following the death of one of the tenants, that the Club was able to obtain an extra 10-acre field. James Braid, another renowned Scottish golf architect, designed an extended course in 1938 but legal delays and the requisitioning of the additional field for wartime agricultural purposes meant a proper 18-hole course was not opened until March 1952.
The old farm buildings had served the Club well for a variety of purposes but in the mid-1930s a purpose-built clubhouse was needed. Despite delays over the lease and the raising of finance, the new building was opened in January 1940. Severe wartime restrictions immediately affected the clubhouse operation with blackouts, early closures, staff reductions, utility interruptions, and food and drink rationing. Only Members were served in the clubhouse and they were limited to one half measure of whisky.