I’m not sure about specific mortgage verbiage but I would think that “due on sale” is fairly standard language
the semantics come into play around the word “sale”
is the transfer of a property from an individual to an LLC, or vice versa, considered a “sale”?
for the County Tax Assessor’s office, the answer in my case was “no” because I was transferring a property that I owned as an individual into an LLC that I controlled
if the answer had been “yes”, the property would have been subject to being re-assessed for tax purposes and the primary benefit of Prop 13 would have been lost (ie, I could have lost my low tax basis because of the transfer – be careful!)
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land sales contracts are another way to dance around the word “sale” in a mortgage contract
land sales contracts are bad news all around, IMO – the ‘buyer’ takes over payments on a house while the ‘seller’ leaves their mortgage in place
now the seller has given up possession of the property to a tenant (from the legal perspective) yet remains financially liable for the mortgage – not a position of power by any means
the buyer is making the mortgage payments on a property that he doesn’t have a title to and won’t get a title to until he can payoff the existing mortgage or refi into a mortgage in his name – again, not a position of power
remember the ‘clean hands’ precept in the legal system – both the seller and buyer in a land sales contract have dirty hands because they are trying to hide (usually) the fact that the mortgage holder isn’t the person living in the house or making the payments