Some stuff of possible interest to OpenAddresses. The US government’s Federal Geographic Data Committee standardized street address schema. The docs are 140 pages of text describing an XML schema, which sure seems wordy, but then it’s also very precise. They even put the XML schema online, here’s a text rendering.
It’s super wordy and contains a lot of detail, but at the core is a schema we could repurpose that says things like “a street address consists of a number, a prefix, a street name, …”
There’s a good summary of the schema on page 3 of the executive summary. Here’s the meat of it: