I did some serious house numbering for the first time today, using the Karlsruhe Schema around my own home. I quickly realised it is a whole different way of mapping. If I'm going to do it on a bike, I need to find a way to attach a clipboard or something with easy access. I need to print out walking papers at a much higher zoom than I did as there's not enough room to write in the numbers at the scale I did it. And I need to collect tracks because hammer-head ends that I might not originally have marked become much more significant, and things change from the original survey and I need waypoints to mark changes in the numbering (e.g. a missing number) when there is no physical reference to pin it to on the existing map. It's sloooow work to get it right though. I'm sure I'll speed up, but I'm not going to try it everywhere, I'll just do it for my village for now.

And I did find changes: within 200m of my house, a new housing estate has been built. Now I knew that had happened, but what I didn't realise is that they had realigned the street pattern and changed street names when they demolished the old houses and built the new. Moral: always worth checking on the ground.