One could type or scan them, but never been an issue to just to have paper (or print something to add to the file).....Just keep it separate from personal.

-also remember, there are apps for your smartphone to scan your signatures to pdf(and easily email), and many, many other useful electronic tools to simplify your remote transactions...thanks,Jimmy

I prefer to keep as much of it electronically as possible.Yes, there are some receipts that I do not bother scanning, but for the most part it is paid via check or credit card which feeds into Quickbooks.All HUD-1s, agreements etc are stored electronically.Files are backed up in the cloud and on an external drive.

@Andrew S., can you please clarify if you're looking for property management or HOA management? 

If you don't want the paperwork you could take them apart and scan them, but honestly: I have a decent number of rentals and lots of manuals and I still have not filled up anywhere near 4 filing drawers with receipts & manuals.

If you have never heard of the BRRRR strategy, scan the Bigger Pockets podcasts for an episode dedicated to it. 

I was an auto body estimator for 5 years before my current job. 

So scan some neighborhoods, that dont flood , have strong rents, your expenses are not out of line, and acquisition cost makes sense .You can find deals all day long  with some leg work.  

About three days after I posted that, I went to turn on the cold water on that faucet, and the big nut that holds the cartridge into the faucet body broke. 

If it is F2F, maybe it is something about the body language and their eyes.