Sure, 4 Ha (10 acres) is an inconsequential corner of a 4,500 Ha farm with rural zoning - no one's going to care if you carve out a few underground spaces and rock wall them entirely and only at risk to yourself.
Community standards kick in once you open such things to the public or move to sale w/out disclosing an invisible (or plainly visible) potential hazard that the buyer should be aware of.
Comments
Are there places in the world where this is still possible? I.e. relatively in a state of order but where enforcement of this kind of thing is poor.
Sure, 4 Ha (10 acres) is an inconsequential corner of a 4,500 Ha farm with rural zoning - no one's going to care if you carve out a few underground spaces and rock wall them entirely and only at risk to yourself.
Community standards kick in once you open such things to the public or move to sale w/out disclosing an invisible (or plainly visible) potential hazard that the buyer should be aware of.
Well, in rural Australia at least.