Not being up to code is one thing.
The completed addition not being permitted is a different story.
Have you pulled all of the permits on the house from the building department? All you need to give them is the APN number or address and they should be able to give you copies of all of the permits pulled for the given property.
You can check the cities recorded square footage of the property on this GIS site - http://assessorparcelviewer.saccounty.net/GISViewer/Default.aspx
Let us know how that compares to the current square footage.
Originally posted by Jason A.:
The county did indicate they would not grandfather in any of the compliance issues and were not sympathetic to my situation, despite going out of my way to be professional and courteous in my quest for information. Originally they asked for any documentation that I had that indicated the size of the house when I bought it. The title, note, and appraisal have no mention of the original size of the house. When I spoke to the county after finding this info, they were no longer interested in it.
This is to prevent people from building an un-permitted structure and getting it approved after the fact. I'm working on a project now where an addition built in the 1970's has to be torn down because it was documented incorrectly (completely by mistake) and built into the setback.
Try to develop a relationship with one person at the building department. This will keep you from having to explain the situation each time and you are more likely to make decent progress.
You're going to learn a lot very quickly. Be persistent and record any information you have. Type up meeting minutes from the various city official you speak with so you have something to point to and quote.