Maybe we're using different definitions of what bookkeeping is but what is it that gives you the impression that bookkeepers work from home or at least that it's normal for freelancing bookkeepers to do so? Generally you'd be expected to be in whatever office you're freelancing at to process the financial transactions and do the necessary recording of them.
I don't want to pour water on your fire here but if you could give an indication of why you think it's common for bookkeepers to work from home when freelancing that might help.
Just reading online.
You off course need documents from the people. It depends how you work.
If you are doing bookkeeping for a finance team obviously you will be based in their office.
If you do books for small shops and companies, take away shop, restaurant etc..etc...then you would work from home.