But with the above, please make sure you're not that obnoxious next door house whose light comes on anytime someone walks the sidewalk or drives by in the road.

Tough to beat this answer from @Michael PlaksYou can also check out these two recent posts that walk through Section 121 Exclusion and 1031 Exchange guidelines and strategyHow Section 121 Exclusion and 1031 Exchange works: https://www.biggerpockets.com/forums/51/topics/1195208-1031-and-sec-121-experts-want-to-sell-rental-but-tax-worried What not to do if you don't meet the requirements for Section 121 Exclusion and 1031 Exchange:  https://www.biggerpockets.com/forums/51/topics/1195383-5k-for-cap-gains-tax-opinion-quote-that-reasonable ...

I have walked into properties that were the equivalent of crawling into a dog house. 

Can we walk away or do they really have legal action that can be taken against us?

Nicer and closer to ASU, lower cap, less nice and a further walk, a little bit above 6%.Do you have something brand new or needing some work?

Consider arriving early if the auction allows potential buyers to walk through the home first.

I agree that is walking a very fine line with Fair Housing Laws.

For instance, today, walking the project I noticed that we didn't address the washer values. 

It is a bonus for a buyer to walk into bookings after a purchase and give them some piece of mind that they are getting enough revenue to cover the first couple mortgage payment, but thats about it.

Do a walk thru for physical6.