Or simply invite them to have lunch with you so you can tell them what you are looking for 

If it means a new tenant, then it means a new tenant (Note: unless that means numerous vacant units at once).

Therapy animals do not have special access and must be invited in.

Similarly I can cite numerous FHA and VA guidelines that would be in violation of federal fair housing laws if Fannie Mae or Freddie Mac did it. 

Tough going I know as I do all the work myself on flip homes and have dealt with to the stud gut jobs numerous times.

Personally if I wanted to pursue this home I would go knock on the door, give the occupants malasadas and see if they’ll talk story with me so I can gauge how much trouble they’ll be and possibly even get them to invite me in (Gotta be careful with this, but Its worked for me in the past). 

I think there’s a meaningful difference there (maybe not a legal distinction, just conceptually) but of course I invite rebuttals!

We bought a duplex last year essentially sight unseen but we knew the area very well and had driven that street numerous times. 

You can even invite your accountant on to check your audit trail for mistakes if need be.

@Ray Melendez Thanks for the invite Ray.