Once people can afford a nicer home or larger lot, they tend to move out of those areas and the local demographic does not change.

My business model will not change (much). 

This increases the changes of your property sitting vacant for a while and can make these very hard to sell (hence why they look more appealing). 

A lawyer would be best to advise you on the simplest way to make the zoning change happen as it is typically a case by case decision. 

I started looking for value ad opportunities and changed from duplexes to single family for a more hands off management, which is what I needed to scale up while still working for a global company.The following years the rehabs got more involved and the properties got more expensive, because I started to realize that only a certain quality of neighborhood would allow me to do a full blown gut rehab and not lose equity in the process. 

( which has a lot of stuff I would change.) 

Freddie Mac announced that as of October 29th, changes they have made to the Home Possible program will go into effect.

The realtor sent over the paperwork and it included addendums which stated that the price was subject to change if appraisal was higher than agreed upon purchase offer.

But with the possible repeal of Costa Hawkins then the rules may change yet again and could become even more tenant-friendly. 

Boot and Reboot.If you are self managing, change that, or sell it to me.