How do your members of the FHS get information on death notices, wills, divorces and land records?

It surely cannot be as difficult as it appears to be. I suppose, like most things, it is a matter of local knowledge and knowing the system but it is most frustrating from another hemisphere.
Sorry- moan over! Going back to “Groenberg”, are there any local ordanance survey maps covering the period from, say, 1925 to 1970 that would locate the property or land and, if so, how can I locate them? (Not through the Master’s office I hope!)