Every state has (slightly) different laws when it comes to "takings", but if this situation has been going on for a while ("open and notorious") the neighbor may have a case for now owning (a piece) of the land you think is yours.  

Excel is notorious for user error, formula malfunction, etc.

Labs are notorious "I'll do anything to get food" dogs.  

(There should be no real reason they can't schedule the billing change ahead of time, but our utility company is notorious for making mistakes or causing delays- I've had them bill both the tenant and I for the same period, then credit me a year later.)

For that analysis, though, use YOUR numbers, based on reasonable rental comps, not his numbers ... sellers are notorious for fudging the NOI numbers to make their property look more apealing than it really is.

SF is notorious for under supplying houses. 

There are some good wholesellers out there, but lot of them are notorious for overvaluing the ARV and underestimating the repairs.  

From months of research and my own personal journey into REI, this book has seemed to notoriously be a huge part for a majority of investors fully deciding to get involved. 

And, there are some owners that are just trying to delay the foreclosure process as long as possible.There are also some agents that are notorious for having listings that are drive by only, no contact with agent.

funny you should say "don't over think it" I'm notorious for that.Thanks for the advice!