Should be your answer.https://data.illinois.gov/Public-Health/IDPH-Manufactured-Home-Communities/bwdr-3569/dataWhen in doubt Google it out.

Having been a licensed MH Contractor/Installer in Florida in the past as well as Arizona, Oregon and a General & Manufactured Home Contractor in California since 1986 I can tell you first hand that you'd be far better off dealing with a "LICENSED CONTRACTOR" any day of the week vs. a "HANDYMAN" who most generally doesn't have a license or they wouldn't be posturing as a handyman.You get what you pay for and hiring an unlicensed, unbonded and most likely uninsured handyman is a big liability that can end up costing you more time, money and grief as it obviously has already.

If that fits you, go for it as far as residential/commercial.Now, commercial, retail, manufacturing, agricultural, etc., you better get some specialized experience first!

I do have my RE License but it is not active now and I am currently a Regional Property Manager for Manufactured Housing Communities. 

I have had inspections on brand new construction where they call out things in a report that the builder replies back to with the actual manufacturer specs, and everything is installed to manufacturer specs. 

I am a manufacturing engineer and I don't like my job.  

Spent the last 15 years in big corp. manufacturing working in various aspects of the Poly Vinyl Resin business.

I own a wholesale flooring materials company so I can buy flooring, bathroom, and other housing materials at low prices direct from manufacturers.  

Everything from manufactured housing, mortgage lenders, education companies, staffing companies, internet, and IOT, to name a few. 

The ad would read something like this: By Owner Will Finance / No Banks / Low Monthly: Clean X br manufactured home in clean safe community-Only $3k down and $1,800 a month.