| Company name | Reg. code |
|---|---|
| TARTU LINN, LOSSI TN 9 KÜ (former name korteriühistu Lossi 9) | 80169084 |
| TARTU LINN, LOSSI TN 21 KÜ (former name Korteriühistu Lossi 21/23) | 80284856 |
| TARTU LINN, LOSSI TN 34 KÜ | 80481485 |
| TARTU LINN, LOSSI TN 32 KÜ | 80482651 |
| TARTU LINN, LOSSI TN 11 // 13 KÜ (former name Tartu linn, Lossi tn 11 korteriühistu) | 80482504 |
| VILJANDI LINN, LOSSI TN 29 // TARTU TN 11 KÜ | 80658328 |