Depends on your deeds - you may have an open plan condition where you cannot do this. Have a look at others in your street and see if anyone has done similar. I'd look at something that if he did inadvertantly knock it down or it got caught by a car - you could replace it easily - e.g. White two foot capped posts and white plastic chain.
You could dig it up and have a flower bed there with that nasty red dyed dirt that stains carpets and shoes and car interiors - he'd avoid it then like the plague.