Apparently, there is a market for hip "retro" features among people without taste. ;-)

Here is a start:  https://www.biggerpockets.com/rei/glossary/The search feature here on BP is very useful, that's how I found this link. 

(Austin was recently featured on BP podcast #239)https://www.biggerpockets.com/renewsblog/biggerpoc...https://www.biggerpockets.com/forums/223/topics/459415-500k-net-worth-in-5-years-im-30-today?

During your open house, make sure to get good solid feedback about the features of the house.  

The building has 4 students in each unit, 2 per room.I've seen numerous times on this site that many investors want to see $100 per unit per month for their investments.

Even for the most basic of zoning, T3/single family, the lot size minimum always says 5000 sq ft.I've tried emailing and calling the zoning department numerous times and they have never gotten back to me.

I'm sure there are numerous areas that are ripe with opportunities.

Using Google's "nearby" feature they have a notification appear on your phone when you are in range.That technology is now available on a very mobile platform.The Asirvia Go proximity beacon is about the size of a car key fob.

I can set minimum stays on the weekends on Airbnb, but I was not able to find that same feature on VRBO.

I would just tell them that they are welcome to ensure all of those features are present in their home being built but they are RENTING this one.