This has hit me pretty hard, I'd guess I have $20-25k in interest to deduct, and have historically. 

Terms like SFR have multiple meanings.A Realtor can historically search sold units for manufactured or mobile homes. then cross check the community or street with the tax records to give you all of the parks in a region or state.

Do not ever expect your tennats to pay for utilities the last month they are there and expect them to abuuse the utilities in th event your relationship is not ideal. 

They are definitely understating expenses or have found a way to live on property, self-manage, and keep expenses to a min through relationships who do jobs on the property for nothing or an extreme discount. 

The answer to your question will address the SEC issues - you need to have a substantial preexisting relationship with the person.

I was thinking maybe historic districts in smaller cities.

I called the sheriff up (Good relationship with him over the years I had it) and he tracked Michael down.

I moved because of a relationship and because its a heck of a lot cheaper to live down here, and the prospect of being able to own property is really exciting.

I don't have time to shop around 10 different places, so always go with established relationships, and trust them. 

Also I'm always looking to connect with other investors and always looking to build relationships.