For me, it's just part of the businessIf they come to the doorstep though, once they've paid I have two different methods of getting them off the doorstep:1.

The delivery guy can just try again.So, I guess you should ask your tenants, really. 

sect...It's Section 1962(f):(f) If the address provided by the owner does not allow forpersonal delivery, then it shall be conclusively presumed that uponthe mailing of any rent or notice to the owner by the tenant to thename and address provided, the notice or rent is deemed receivable bythe owner on the date posted, if the tenant can show proof ofmailing to the name and address provided by the owner.

Purchase a ball-gag from Amazon along with 50 Shades of Grey, and leave them on her doorstep as a present.  

He turns up on my doorstep 1st of each month with cash.

We also have a signed LOI for a Rock Hill, SC unit for a late 2016 delivery (new development). 

I will, however, cooperate with you regarding making appointments with tree trimmers, or roofing contractors, when the time comes.Please find additional copies of the photos of the limb enclosed.Most Sincerely,YouThen send it with delivery confirmation. 

so pretty much, by contract it's already "non-refundable" assuming there's no issues with delivery of property etc etc?

I've had two fridge deliveries from Lowes with slight dings in the front door and they've given me 15% off of one and 13% off of the other.

I then suggest you take the feed back from him along with the terms of the guarantees and delivery of financials and discuss with the folks you plan to have invest in this venture.