This might work. Establishing the setbacks for the footing location at the beginning of a job does, of course, depend on those pins. Pins are generally visable, and as of yet undisturbed.
But preserving the corner pin visability to the end of a job or re-establishing it would be difficult for somebody. It would often require digging, and in some cases, a new survey.
There are already many competing forces at work at the point of completing a home, building, or project, including fences, landscaping, . . . closing dates . . . expired leases . . . moving schedules . . . etc. I can't see holding up a closing because either a builder or homebuyer has not started, or completed a fence. For that matter, I can't see holding up a closing, (C/O), even if a fence is built on the wrong property. Too many things getting held up by government at a time when most parties are concerned with more pressing matters. No life safety issue. Can be resolved later, or, in emergencies, immediately by whoever owns the property, (tear it down and sue for expenses). Depends a little on what kind of neighbor you want to be.
Also, many fences are established within a few weeks, months, or years after a C/O for a home is issued.
Most fences established here are probably off a few inches, and sometimes a foot or so. Most people will acknowledge the fact and accept the discrepancy.
Everywhere I have personally lived in town, fences have existed between my property and my neighbor's property. Before much time at all passed, it would casually become established whose property the fence was on, and, who actually owned the fence. Then, we turn our focus to the overhanging branches above and consider who owns the trees. Go fiqure?
