[ULPIANUS libro septimo decimo ad edictum. ] §6.1.37.prIulianus libro octauo digestorum scribit: si in aliena area aedificassem, cuius bonae fidei quidem emptor fui, uerum eo tempore aedificaui, quo iam sciebam alienam, uideamus, an nihil mihi exceptio prosit: nisi forte quis dicat prodesse de damno sollicito.
[ULPIANUS, in the seventeenth book on the Edict.] Iulianus writes in the eighth book of his Digest: if I had built on another's ground, of which I had indeed been a bona fide purchaser, but built at that time when I already knew it belonged to another, let us see whether the exception is of no benefit to me: unless, perhaps, someone should say that it benefits one who is anxious about avoiding loss.
puto autem huic exceptionem non prodesse: nec enim debuit iam alienam certus aedificium ponere: sed hoc ei concedendum est, ut sine dispendio domini areae tollat aedificium quod posuit.
But I think that the exception does not benefit this person; for he ought not to have erected a building when he was certain that it was already another's. Yet, this should be granted to him, that he may take away the building which he has erected without causing any loss to the owner of the ground.