I have a binder dedicated to "master" copies of forms-from phone prescreening questionnaire, to leases, to move out letters and everything in between.  

My question is what wording do I use in my letter to the tenant informing them of their 30 day notice to leave the property?

Hopefully you will still write letters and buy business cards.Added together, you can expect around $2,000 per year just to keep your license active.  

If you are using financing, then surely they can provide you with proof of funds or a lender letter.

When talking to people, sending letters, any contact...

You can try sending letters and postcards to homeowners in the areas you are interested in.  

If you're cash strapped, my best mailing campaign has always been white letters to probate leads with hand-writing the mailing address on the envelope.  

If the seller could find a professional engineer that will sign a letter that says he inspected it and that the work was done correctly, the city might accept that engineer's letter to resolve the issue. 

That's where you would send a letter.

@Wen Guo I would ask for a letter from the bank first, just to verify why his account is frozen.