How To Set Default layout List / Grid in Search Result Page ?

If someone is searching for the listings in the search result page there is a default layout set showing grids layout for the listings in the search result, There is also a switch available in the top bar which users can use to switch the layout to list or grid view, But if someone wants to have search result page layout default showing list view for the listings then that can be easily set from Theme Options > Listings > Archive > Default Layout 

Choose List Or Grid From there, the Selection option will show listings as in the view in the search result page list or grid.