Adversus extraneos vitiosa possessio prodesse solet.
Possession with faults is usually sufficient against strangers. That is, bad possession is better than none as against a stranger; one who has possession has a better claim than one who has none.
Ad vitium pervenit quod cum libertate non tenetur quis.
No one is held to answer who has not voluntarily intervened; no one is liable for what his own fault has not contributed.
Aedificare in tuo proprio solo licet, quod alii non noceat.
It is lawful to build on one’s own land provided it injures no one.
Aedificatio solo cedit.
What is built on the land goes with the land.
Aedificia solo cedunt.
Buildings go with the land.