In France, if you have an inaccessible land, either:
- it's surrounded by private property, and the neighbor must offer some sort of passage through their land to yours. If it's a field, it does mean to destroy permanently part of it so you can go through.
- it has at least one border with public property, and the state must provide a real asphalt road to access it.
However, you are left to organize traversal of your own land, so if your house is deep inside it, you get to pay. And of course, getting power lines and water pipes connected to it is still 100% at your charge.
- it's surrounded by private property, and the neighbor must offer some sort of passage through their land to yours. If it's a field, it does mean to destroy permanently part of it so you can go through.
- it has at least one border with public property, and the state must provide a real asphalt road to access it.
However, you are left to organize traversal of your own land, so if your house is deep inside it, you get to pay. And of course, getting power lines and water pipes connected to it is still 100% at your charge.