Even if they do not, it’s not your legal responsibility.Long version: It actually depends on your method of payment, and it’s not always clear.Credit card payments: clearly not you problem, no 1099s needed.Zelle payments: you DO need to send 1099s for Zelle payments.PayPal, Venmo and Cash App payments: this is where it gets tricky.

Currently the building runs well, good tenants who are below market rent but there is harmony and dependable cash flow.

They say sellers "choose" a buyer agent amount under the threat of that agents might refuse to show a house if they (agents, not consumers) think the pay isn't enough.

Depending on the costs and a build to rent approach could work if you'd be willing to hold the properties as rentals. 

Depends.

(The difference in rate depends on the deal structure, e.g., the ratio of rehab dollars to purchase price.)Like a HELOC, you only pay interest each month on the loan.

So that area is based mainly on ease of longer term (ish) rental income, with about 2-3 years stability depending on how often people PCS and the (somewhat) quality of tenants (bc you never know, even with military).

I think it would give it a little bump in value but it all depends on the buyer.

.- Depending on your budget, do you want a small condo or larger residence?  

.: Quote from @Charles Perkins: Washington law gives tenants the option of paying the security deposit over several months depending on the lease term length.