The Sussex Archaeological Society acquired the mill in 1927 and repairs were carried out by E Hole and Sons of Burgess Hill in 1934. In 1976, at the Annual General Meeting of the Hassocks Amenity Association, there was a talk was given on the work of Weald and Downland Open Air Museum. The question of how to preserve Oldland Mill was raised. The mill was then in the ownership of the Sussex Archaeological Society. The mill was looked at in 1977 by millwrights Vincent Pargeter and Edwin Hole and found to be close to collapse. Following negotiations with the Sussex Archaeological Society in 1979 the Hassocks Amenity Association leased the mill in 1980 and began a period of volunteer led restoration.