I'm trying to find vacant land in my city. I have a layer with buildings and a layer of parcels. I want to create a layer of the parcels that do not have buildings within them. I have tried select by location, but it only gives me parcels that do have buildings. Also, I have at least 80,000 buildings so each time I try a join it takes forever and usually crashes.
I assume you're using ArcGIS. If your selection gives you all parcels that do have buildings, then you can simply press the "switch selection" button in the attribute table.
Note that the answer in the linked "similar question" doesn't provide any details as to how to go about reversing the selection.