Best strategies for finding off market deals

[Brett Read]

Hey BP!

I am an agent (and investor) in Rhode Island. I have a client who needs a very specific type of building. He sells classic cars and needs a 20,000+ sq ft building to store his inventory in or near Smithfield Rhode Island. I began to search the MLS and have sent him some properties close to his specifications. He replied with "I know everything that's out there. Find me something I haven't seen." Now I'm thinking my only option is to find an off market deal. Can anyone help me with strategies on finding off market deals? Obviously I will be tapping into my network but what other options do I have? I'm thinking of "driving for dollars" as an option. Can anyone give me tips on driving for dollars?

Any tips or suggestions would be GREATLY appreciated. This is a cash buyer with NO budget.