Let's say there was a rental building next door with identical comps: What would stop them from going there instead to avoid paying those fees?

My situation is identical!

.- The format for the paystubs were identical and like no other stub I have seen

The stories are endless of one person on a block paying $8000 for all new windows and another practically identical house on the block paying $20,000 for all exact same new windows.So your means of buying and getting the windows installed can really affect whether this is a good idea or not.

HUD considers that a conflict of interest and a potential identity of interest conflict and violates HUD rules. 

I posted some information in another thread with identical titles here:https://www.biggerpockets.com/forums/52/topics/505...Basically, as landlords the ways I have been able to figure out how to flush out those with real ESAs vs those who just claims they have ESAs either with a bogus letter or paid an online service to provide ESA certification are:(1) Tell them you do not accept any online ESA certification. 

You joined today just to post 3 identical messages about this company?

Like I said all of these condos are basically identical but I know that very few have hard flooring in the bedrooms because 98% have carpet.

One of my clients recently was in the same situation as yourself and we ended up finding him a 3-family in a better area than he was originally looking in and the rents were nearly identical to that of a 4-family. 

This is the DE wording in 4603(b)(3), the Delaware Fair Housing Act: (3) To make, print or publish, or cause to be made, printed or published any notice, statement or advertisement, with respect to the sale or rental of a dwelling that indicates any preference, limitation or discrimination based on race, color, national origin, religion, creed, sex, marital status, familial status, source of income, age, sexual orientation, gender identity or disability, or an intention to make any such preference, limitation or discrimination.