I looked there and a bunch of the examples show places where it used to be used (which is probably a good indication of how hard it is in practice). The rest have very vague details and none of the examples there really go into any depth on the details of how they value land in practice. So I'm wondering if anyone knows which country has a good model to look further into.

Based on the examples listed, I would imagine that it would probably easiest to look up those Australian states like Victoria.