I can appreciate the fact that my experience/knowledge doesn't shine through on some internet forum, so I don't take offense to your comments.

That would be for a licensed Electrician as @Tyler Amburgy mentioned, i would not recommend doing it as a DIY project, have a licensed electrician do it with all the proper inspections, helps to free you from liability should anything happen ( even though a lawyer will always find ways to get to you - no offense to any lawyers out there ) I am a contractor but i do not do any work on my rental properties or flips, i always hire local contractors in the area.

No offense @Ryan Redenius, but I wouldn't have posted so much info and analysis on BP.

Any tips on how I should write an email convincing them to sell, or at least preview their home without sounding offensive?   

However, it’s also a field full of potential landmine issues with fair housing.There are important things to remember when using social media to screen tenants.Start with a solid application processIf you’re not starting with a thorough rental application, a credit check, and a criminal background check, go no further.Beyond that, have a checklist of uniform criteria and standards you need each tenant to meet.

However, this is a situation when they deny that their partner has moved in but it appears like they live in the apartment building.This may happen because of bad credit or because of criminal convictions that they do not want to disclose.

What if they have terrible landlord references or a criminal background that includes legally deniable crimes?

@Dan SmithHi Dan, no offense, but grossing $1,500 is not the same as positive cash flow.

It is a criminal offense to trespass on this property"So is this a sight unseen auction?

Consequently, criminal records-based barriers to housing are likely to have a disproportionate impact on minority home seekers.