curious - why is it on a new owner to recognize, and honor an informal agreement that a neighbor and previous owner had?  i understand easement rights, but both properties in question do have their own legal accesses - it's just inconvenient for them to use. .
   at one point, when still rural by me, i had extended my garden into the house's yard behind me - an older woman had lived in the house - didn't care and enjoyed the fresh fruit and veggies. i had even planted blueberries and a large strawberry bed. she passed away, the house sold.  did i have the right to claim garden rights on her property?  i could tell the new owner it had been OK with the previous owner.. had pics to show it had been that way for several years..
 what would be the difference?