We also have parents as co-signers, and that helps preclude neglect when the parents know they're also on the hook if little Junior destroys the place. 

I'm purchasing a junior non-performing mortgage behind a performing first mortgage secured by a home in Massachusetts.  

You may want to consider having you added in a junior lien position with a set dollar amount that you both can agree on.  

@James W.If you buy at an auction that was started by a junior lien, then you will have to negotiate something or pay off the senior liens in order to clear your title.

Junior liens, junior judgments and code violations if they are named/served, get wiped.Some state liens May survive, not sure about which.

also you want to in most instances have your title company run date down title before you accept one.. if there are leins and judgements your taking title sub too those when your record your dil.sometimes when U look at the current state of the title you will determine you need to do the full foreclsoure to extinguish juniors who are now latched on to your title.

I would come in as a junior lender. 

Hey @Michael Junior You can drop mail on their door step but don't touch their mailbox because that is illegal :)

I don't have the resources to buy a MHP proper yet, but figure this very junior type of a similar business arrangement may make sense.  

@Michael Junior curios to see if you've made any moves!