| Company name | Reg. code |
|---|---|
| TARTU LINN, KRISTALLI TN 8 KÜ | 80634799 |
| TARTU LINN, KRISTALLI TN 10 KÜ | 80559425 |
| TARTU LINN, KRISTALLI TN 16 KÜ | 80552050 |
| TARTU LINN, KRISTALLI TN 12 KÜ | 80563409 |
| TARTU LINN, KRISTALLI TN 5 // 7 KÜ | 80546919 |
| TARTU LINN, KRISTALLI TN 9 // LASERI TN 6 // 6A KÜ (former name Korteriühistu Kristalli 9, Laseri 6 ja 6a) | 80430134 |