While poking through papers the previous homeowners left, I noticed the well permit change of address form with a sticky note saying to check the website in a few weeks. So I poked around the Division of Water Resources website and found the document history for our well permit.
Except… the dates looked a little funny, relative to the construction of the house. And then I noticed that the address
on the original permit is down the block, where the north-south street bends into my east-west street. "Huh, did that person own two houses on the same block?" I wondered. So I poked around the County Recorder's website (and used Chrome developer tools to make the document viewer useful). The names didn't line up either.
Then I took a closer look at the well permit's legal description. "Lot 5, block 8, Country Club Park." Isn't that my legal description?
I checked the assessor's website again. Oh, wait, I'm (part of) "Lot 5, block 8, Country Club Park Partial Replat
." Totally different numbering lot sequence! But Block 8 is still contiguous. And someone at the State probably didn't know the finer points of Boulder County subdivision plats, so they saw "Lot 5, block 8, Country Club Park" and matched 'em up. I wonder if our neighbors have a record of their well permit. I'm not sure how much I care about fixing this.
Other fun discoveries from the plat maps: