The reason that is currently the condition is due to multiple offers and the listing agent/seller being concerned about the appraisal coming in lower than purchase price, which is mitigated by seller asking for no appraisal contingencies and larger amounts of money in the bank. 

What concerns me is the neighborhood.

I told her that she needed to give legal notice in writing which she refused to do so I gave her 30 day notice to make intentions clear for all concerned. 

So, like Eric James posted, if it's been vacant 15 years the electric may be of lesser concern.  

If you are concerned about the quality of the inspection you’ll get in working through your realtor I’d suggest asking to talk to a past client that has used that inspector and speaking with them about the experience.

As long as it appreciates at a good amount like it has and you are not losing money renting it out, I would keep it for the appreciation not be concerned about the 1% suggestion.

"Seemingly harmless, these letters actually raise fair housing concerns, and could open real estate professionals and their clients to fair housing violations."

Yes you're correct, I'm new to invest in real estate and My concern is If I choose to go with listing agent, will there be higher chance to got this deal since the seller doesn't need to pay additional commission to the buyer agent?

Otherwise, your concern isn't much different to a commercial rental. 

I can understand your concerns.