The PM should be looking to their E and O insurance-which they should have as a responsible business owner.

The landlord shall have complied with this subsection by mailing such statement and any payment to the last known address of the tenant."

Make sure you have a forwarding address for the tenant so you can mail your determination and refund (if appropriate) within the allotted time period.

@Derrick E-Looking to get between $2500-$2700@Adrian Chu-My closing date is 28 Feb. 

You could circle prospect, call expireds, farm, door knock, direct mail, hold open houses and invite the neighbors, contact sphere of influence, text circle prospects in mass.Bryan Casella has a great open house game plan where he invites homeowners.You have to see what works for you in your market.

Look up and contact wholesalers in your desired area to see if they have anything that meets your criteria (many are here on Bigger Pockets to connect with)If you are prepared to go further in your search, you can direct-mail the owners of any multi-family properties you see that you take interest in, to see if they may want to sell.

Welcome to 5114 89th St E Unit 40, located in Puyallup, Washington.

There are a lot of ways to find these deals, from networking, to cold calling, to direct mail, internet marketing, etc. 

I'm not looking forward to sending a bill via certified mail to ALL four of these tenants (they are all on the lease and all signed) but I'm guessing that I MUST?

You could send direct mail.