I've heard that one shouldn't take out a LOC on a home that you are actually living in, that it's too much of a liability.  

And perhaps the best overall "exit strategy," aside from seller (underlying loan/s) or owner (owned outright) financing, in some instances... and much less potential 'liability,' with a faster turnaround time, so ultimately quite profitable, iF you properly 'vet,' preqaulify and then credit repair, etc. so 2/3rds to 3/4s plus can 'qualify,' and CLOSE in 12- 36 months, or so!? 

This is why I consider subject-to a predatory acquisition strategy.Take away the only asset the seller has (House)While leaving the seller stuck with all the liability (Mortgage)

Alternatively, instead of actually taking back the money you might consider pre-arranging a move of the mobile home to a new park (at least see if its economically feasible) and if it is something you would consider show up to the sellers how on the premise you're going to get your refund, and spring on her you'd be willing to settle the situation by receiving the refund (get it in your hand first) and instead of her having a liability to repay the $1,000 she's already spent you'll relieve her of the requirement to repay the $1,000 in exchange for you taking the trailer she'll not be able to sell to anyone else anyway.Its worth a shot if the economics work out. 

I don't think too many small 401K's get review, but if the total plan liabilities began to equal or exceed assets on the annual Form 5500 reporting, that might be a red flag?  

Or another option that our clients have pursued many times in the past has been for the LLC to complete a partial exchange and then after the fact dissolve the LLC and distribute the property to the members who want to go forward and the cash and associated tax liability to the individual wanting to cash out.

The property will be sold in an "AS IS WHERE IS" condition without either express or implied warranty or representation, including but not limited to the description, fitness for a particular purpose or use, structural integrity, physical condition, construction, extent of construction, workmanship, materials, liability, zoning, subdivision, environmental condition, merchantability, compliance with building or housing codes or other laws, ordinances or regulations, or other similar matters, and subject to easements, agreements and restrictions of record which affect the same, if any.

@Joseph Ben The most important information you'll need as you think about 1031 in this situation is what your tax liability would be on each of the properties.  

It goes without saying that allowing tenets to airbnb introduces a major clusterf*ck of liability and randomness that a LL would be wise to do without!

Without a prior legal relationship with the vacated occupants I can't see what liability you would have.