I'm curious what mechanisms it proposes.
One of the funner ones I've heard of is that the owner and payer of the property tax performs the valuation of the land: it makes implementation pretty much free and uncontroversial! The only caveat is that whatever value the owner lists as the value is an amount they must accept for the land in a sale (plus some meaningful fee to drive off trolls).
So, sure, you can list the value of the land of your Pac Heights mansion as $1 and pay a commensurate tax on that. If you do, though, someone can purchase it for $1 and start charging you a hefty use fee.