“ 32. The only property that is inherently immovable is land itself: even conventional buildings intended to be permanent fixtures may in many cases be removed and re-erected if sufficient care is taken. On the other hand there are clearly different degrees of ‘movability’ of property other than land: a true building with walls and foundations will, in view of the costs, only very exceptionally be moved whereas a circus tent’s core function is precisely to be movable. 33. The question whether buildings or other literally movable objects are in legal terms immovable property may in principle be answered either by objective criteria relating to the quality of the attachment of the object under consideration to the land on which it stands, such as for example the strength of the attachment (firmly attached) or its inseverability (‘inseverably attached’), or by subjective criteria such as the intended duration of the attachment.”
“In the case of the … units, there was a limited degree of attachment to the ground, both by the linkages to various utility services and by the attachment of skirting where this needed to be installed. We do not regard the linkages or this attachment as sufficient to enable the units to be regarded as having been firmly fixed to the ground. It took no more than an hour and a half to remove a unit, together with the work required to remove the service installations, skirting and attachments, and fencing. Subject to the contractors being present for two days to deal with the fencing, the other works took about half a day. The work involved was nowhere near as substantial as in Maierhofer. We regard the … units as much closer to the structures considered in Commission v France .”
“firmly fixed to or in the ground”