Still in progress here in NC.
Here is the deal so far. We insured our coach as a 'bus' and had to buy commercial insurance at the rate of $800-1200 per year. Quotes suggest that a 'house car' (as such things are classified in NC) insurance would be starting closer to $500/year.
A non-commercial bus does not require a CDL but (depending upon GVWR...over 26,001 lbs) may require a Class B which is a similar test (study book is the cdl one). You will need to pass the written test and then pass a driving test within 90 days; and provide your own vehicle for the driving portion.
The DMV said that you can schedule a site visit (no charge) to have the bus inspected for a retitle from bus to 'house car' and you will need to sign an affidavit of changes. It appears that the inspector basically uses the affidavit as a checklist. Your changes must meet four of the six criteria for 'house car' and give them the "impression of permanency" which was their way of saying they were looking for signs that you won't be hauling that stuff back out to make room for paying customers after they leave. The six criteria are fairly concrete but there is still plenty of room for discretion on the part of the inspector so it would pay to talk to someone at the office you will schedule with. Also, you'll need to provide access to the unadulterated VIN for inspectors use (VIN is in 3 different places on our coach). I called our local office and got a lot of guidance as we discussed his particular reading of each of the six criteria...he was very patient.
You can download the NC title manual here: https://connect.ncdot.gov/business/D...s/default.aspx
open it and do a CTL-F to search for 'house' as a key term. you'll quickly find the section (in Ch 2) on titling a house car with the aforementioned list of six there.
We have discovered that the tricky part is the practice driving. After you pass the written test, it appears you'll need to find/hire someone with a class B P-endorsement (again depending upon GVWR) to ride with you while you drive and possibly go with you down to the DMV to deliver the bus for your test drive. In my area, there are lots of beer bus drivers with free time in the winter...also you could call the school bus garage to ask for names. All of the mechanics have the appropriates and, of course, all the drivers. Drivers are paid about ~ $13.00/hr to deliver kids, FYI.
Final piece of advisement: don't call the office in Raleigh...they will quickly shuffle you to the CDL office and you will be told you need one. You don't. If you chose to go that route, you would have a tougher test and penalties for traffic violations (even those not occurring in your coach) would be double...also the legally drunk blood level drops to 0.04 from 0.08. Call your local tag office instead. If that fails, call the office in Asheville (82