LT2013 m., pasinaudojus Europos Sąjungos struktūrinių fondų parama bei įgyvendinant Jašiūnų dvaro sodybos rūmų ir oficinos (UK 945) (Šalčininkų r.) rekonstrukcijos ir pritaikymo turizmo reikmėms darbus, gegužės–spalio mėnesiais saugomoje teritorijoje buvo atliekami žvalgomieji tyrimai. Remiantis 2013 m. žvalgomųjų tyrimų rezultatais, aptiktas ir dalinai ištirtas XV−XVII (XVIII) a. stovėjusio pastato (greičiausiai medinio) rūsys. Iš rašytinių šaltinių yra žinoma, jog pirmasis Jašiūnų dvaras (Radvilų rezidencija) šioje teritorijoje pastatytas 1402 m., tačiau iki šiol tiksli jo vieta nebuvo žinoma. [...] [p. 246, 249].
ENIn 2013, a field evaluation (48 test pits, a total of 73 m2) was conducted in implementing the work of reconstructing the Jašiūnai manor complex’s palace and officina (Šalčininkai district, SE Lithuania) and adapting them for tourism. A fragment of the red clay brick foundation of a building that previously stood there was discovered at a depth of 40 cm in test pit 13 (3x2 m) excavated 10 m to the SW of the presentday officina building. The foundation’s W side was a single row of large stones. A hardpacked clay layer was discovered at a depth of 54 cm on the E side of the test pit and the wall and below it, at a depth of 80 cm, was a layer of large stones that did not form any clear structure. Below the foundation to a depth of 2.84 m, a find-rich cultural layer was excavated. Two horizons can be distinguished in it: an earlier 15th–16th centuries one and a later 17th–18th centuries one. It is conjectured that the building’s cellar previously stood at this site. After conducting additional investigations in the vicinity of aforementioned test pit, a find-rich cultural layer up to 2.16 m thick and a stone paving fragment at a depth of 2.16 m were recorded, but no other additional building structures were discovered.The test pits contained an especially large number of valuable 15th–18th centuries finds. 13 15th–18th centuries coins as well as various ornaments and clothing elements were discovered in the cultural layer, but the bulk of the finds consisted of potsherds. The building that stood at this site could have had at least two tile stoves during the period of its existence. The bulk of the stove tile fragments consisted of panel tiles (Blattkacheln) with hunting scenes and tiles decorated with extensive designs. Partly thrown undecorated household pottery or hand thrown pots and pitchers predominated among the discovered finds. During the evaluation, the cellar of a 15th-17th (18th) centuries building (probably wooden) was discovered on the grounds of the Jašiūnai Manor complex and partially excavated. From written sources it is known that the first Jašiūnai manor (a Radvila residence) was erected in 1402, but up until now its precise was not known.