I want to subdivide into two lots a large parcel that is currently split down the middle by a county line. The two counties have different access requirements for residential lots. The left side is in "Happy" county. The right side is in "Serious" county. The access is currently entirely through the Happy side and its street frontage is 40 ft. wide. Serious requires 40 ft. street frontage for all of their residential lots. Happy only requires 15 ft.. So, by right, I could keep the parcel whole and build on the Serious side. Now... what if, after having built and moved into the home on the Serious side, I subdivide off 15 ft. of the street frontage and the rest of the whole Happy side? That would then leave only 25' access for my Serious county house. Let's say that it is a given that everything else works, i.e. setbacks, lot size, zoning, etc.. Given that Serious has nothing to do with the any of the subdivision because none if it is occurring in their jurisdiction, can they stop me from subdividing off the 15' access and Happy side? Could Serious make the argument that that whole 40' is designated to the Serious house and that no other houses can be built on the Happy side- even though Happy would be perfectly fine with it? Would Serious ever even know that I was subdividing off 15' access and the rest of the Happy side? This parcel is three blocks to a major mass transit system. Really, TOD would dictate that this parcel should be higher density than just two SF houses. But, I am concerned that I won't even be able to get two houses out of this large parcel just because of screwy, old residential codes. Has anyone had experience with this type of issue? I would appreciate your thoughts. Thanks!