In my opinion this is lazy data.

The logical mind does tend to consider all the data on shortages and low interest rates, and droves moving from Illinois etc... 

Unfortunately PMs have no vested interest in ensuring this does not happen...   

Tags need to be on the mobile home then the data plate inside indicating model and specifics on manufacturer etc.I've found it difficult to finance just the land too with the home on it. 

@Matthew Mason I would make sure to read your builder contract to ensure you can do what you are planning.

@Rob Shah,use Rentometer.com or BP Insight to have an idea of what the property will rent for.If you don’t have access to either then use 90% of whatever Zillow Rent Estimate is for example, if Zillow says it will rent for $2000, then 0.9x$2000 = $1800 will be the most likely rent.That been said, the best comparable is the one you get from an Agent because they have MLS access with a lot of data that will provide you the best result.Goodluck

I am finding a lot of data from 2019, but the last couple years have been rather different than the trend from the past decade. 

General Market Research of City/ Area ( i.e. demographics, population trends, Crime, vacancy, expected rents per unit type, market values/trends, etc)- To ensure you are buying in a solid market 2.

That is something you really need to be careful on in what investments you choose and ensure you mitigate risks through proper due diligence, education in the investment strategy you choose, & proper team building to accomplish the goal.

This is someone else data.