alt Hacker NewsWhat you're describing sounds like what we call "in current use" in New Hampshire. I know Maine has something similar but I can't remember what they call it.
You don't pay taxes on land in current use, but, if you or whomever you sold the land to, wants to build on it, they have to pay the back taxes first. It's a great for conservation.
You can get a hefty tax break on forest land in WA state as long as you have a forestry plan in place, and the same goes for fields in Florida for cattle grazing.