UK – The local council planning team get the plot numbers from the developer and come up with a naming scheme and numbering on their own.
My local council decided to name the roads in the new build area near me after locals that were killed in WW2 – very nice. However, they didn’t seem to keep a list of ones they had already used and ended up using the same names multiple times in the same estate e.g. Smith Crescent, Smith Road, Smith Close
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