Question: GLA Datahub data access

Hello,

I was wondering if someone could help me with the Elasticsearch to obtain data for a research project as I am a first time user without any experience querying data. I cannot seem to find precisely what I am looking for. It specifically relates to the GLA datahub.

I am looking for data on "Net number of new build homes built on small developments"

I apologise if this type of question is not permitted on this forum but I cannot seem to figure out how to filter my search on the discover page of the datahub.

If anyone has experience with this or might be able to point me in the right direction, any help would be greatly appreciated!

Thank you in advance.