In NC, your sales may be considered personal property since a MH, unless explicitly declared and recorded as permanent, are personal property (like an automobile) and financing and sales rules are not like selling a residence.

But here in San Francisco buildings (especially 2-units, but again let's pretend it's a SFH) are held by tenancy-in-common and people are given fractional TIC loans (typically 5 or 7/1 ARMs, .5-1% higher).

Go to a few local real estate networking meetings and find a successful investor who will take you under their arm and coach you.

Looking at selling one of my rentals and using proceeds to exchange in to buying a house from my mother that she is currently using as her weekend home. The property would then be used by me as a rental. Any potential...

It is an attempt to define rent as: fixed and periodic payments, and it explicitly prohibits a landlord from collecting any additional payments due from the tenant as written in the lease, such as utilities owed. 

It is an attempt to define rent as: fixed and periodic payments, and it explicitly prohibits a landlord from collecting any additional payments due from the tenant as written in the lease, such as utilities owed.

Of course there are some considerations:You need a Qualified Intermediary to assist with the transaction, ensure all documentation is in place, and keep all the money at arms length.

Or when I asked her about pets, she tells me they have none, but yet there are multiple FB posts about a cat and she explicitly makes a reference about owning a cat - I shouldn't believe this either? 

You may only be able to get an ARM.

The one thing not already mentioned explicitly is that the transformer is a voltage step down transformer, so even if the pole goes away and the lines get buried, a transformer will still be needed to step down the voltage.