This may be just a dollar problem for the owners of lot A.
Or it could be a neighborhood feud.
If it is the first problem, and the house is priced well, it may be worth looking into.
If it is the latter, at least you get a heads up that there may be a neighbor problem.
Neither is insurmountable.
One may just be dollars, and the other may just need a new face and perspective.
Either way, the attorney can provide the best advice.
And, I'll bet your real estate professional can suggest a few other options - without the issue.
(Please note: when you choose an answer as a Best Answer, or at least give a thumbs up, it helps those who answer questions here.)
If you are selling, take care of the costs yourself so as this does not affect your sale.
Best of Luck
I could. If there is already a problem with Lot A there may always be a problem
with them regarding any issues. Why would you want to get involved with a neighbor
like this. It is also a potential issue for resale.