Retaining Wall Support I Am Looking For The Section Of The Ca. Real Estate Law That Deals With Encroachment And Lateral Support?

I am looking for the section of the Ca. Real Estate Law that deals with encroachment and lateral support? - retaining wall support

Voisin built at the land borders, has pad offer 1 to 5 meters of land in my possession in a position to lateral support, but to remove as the care can not, without dirt wall wall in my $