There is no such thing as a pre approval letter to purchase MF. 

Many or all the the units may already have signed leases, but every time we purchase an apartment building we give every tenant a copy of our lease even if they don't sign it so the tenants know our House Rules, how we start the eviction process when their rent is late, who to contact when they have any issues, etc.When we purchase a property we always write a letter introducing ourselves.

The other area to focus on is West Medford by the commuter rail that’s a great walking neighborhood and a good mix of singles and multis. 

Should I have a letter of intent prepared?

Should I check to determine if they have tax liens; then send letters to the owners on record, indicating I would like to purchase? 

I'm keeping a Pittsburgh based return address on the postcards/letters, but I'd rather not have a giant collection of returned mailpieces pile up for me to collect on a regular basis.I've heard of an option where the post office can send you photos of your undeliverable mail and then discard it for you, but I can't seem to find anything about this service on the USPS site.

You will refinance out of a VA, use you One Time Restoration and it will renew your eligibility allowing you to buy another VA 1-4 unit for 0 down and killer VA rates.As far as being Denied, the requirement may come up that you need a Motivation letter explaining why you chose to move which is as easy as saying you found a home more suited to work, family, location, opportunities etc.

You should also CC the tenant and the movers on that letter so everyone knows everyone. 

The problem is, I know of a cash buyer or two that might be willing to take the deal but I'm pretty sure the agent will want a proof of funds letter upon me offering the contract yes?

My concern is, once I get a pre-approval letter for a FHA loan, I'll only have about 3 months to purchase a property.