The South Bourke and Mornington Journal reported on April 25, 1912 the following - At the Cranbourne Council meeting on Saturday, 13th inst., a communication was received from eight residents of Lyndhurst making application for a piece of land as per plan forwarded, at the end
of Kirkham's lane, with a frontage to Lyndhurst road, for the purpose of erecting thereon a public hall.
A year later the matter was back before the Council again as they were dealing with correspondence from the Lands Department regarding the site of the Hall and at the May 1913 Cranbourne Shire Council meeting the following was reported - From W. H. Peers, shire solicitor, forwarding copy of plan attached to title for allotment 24 and part of allotment 44, Lyndhurst, proposed site for public hall. On the motion of Crs Brunt and Gamble, secretary to write to owners of land re transfer of same. Lyndhurst Road is the same road as Dandenong-Hastings Road which is now called the Western Port Highway.
However, the Lyndhurst community had obviously been very confident obtaining the land and thus building a hall as in October 1912, they purchased a piano for the hall at the cost of £40, a price which was considered a bargain according to the report in the South Bourke and Mornington Journal.
I cannot find any references to the Hall between 1913 and 1920 as presumably everything was put on hold due to the First World War, but from 1920 there were reports of fundraising activities for what was now called the Lyndhurst Memorial Hall. I also cannot find an exact opening date and the earliest report that I could find that the hall was completed, was this one, below, from the Koo Wee Rup Sun of April 7, 1921
I have created a list of articles on Trove on the Lyndhurst Memorial Hall, which you can access here.