But be advised that if you're looking for information regarding building permits for improvements you may not always be successful as many building jurisdictions don't keep a complete history of permits. In fact many only keep them for ten years or even less. In most cases they throw away the plans after a few years simply because they just don't have room for them. As a general contractor for the past 3 decades I've run into this many times. Good luck.
An easier process would be to see if could get a title report or "Chain of Title" from a title company. It would probably cost a few dollars, but is a whole lot easier.