This paper describes the survey techniques employed for the metric 3D documentation of ancient heritage, actively contributing both to the study and comparison of archaeological data, and to the hypothesis of an architectural recreation of non-existing rooms and settings. The archaeological analysis and virtual reconstruction concern the luxurious residence named the domus of “Putti danzanti” in Aquileia; the arrangement of such houses and their features have revealed new keys for interpreting dwellings in the period of late antiquity in Northern Italy.