| Company name | Reg. code |
|---|---|
| HOUDINI OÜ | 17109639 |
| BSOD TECH OÜ (former name Hourdini OÜ) | 12730436 |
| HOUSING OÜ | 11712597 |
| ESM HOUSING OÜ kustutatud | 12473867 |
| SCD HOUSING. OÜ kustutatud | 12812571 |
| Repre Housing OÜ kustutatud | 10057188 |
| WELLBELL HOUSING OÜ | 16481958 |
| HAPSAL HOUSING OÜ | 17233607 |
| KL HOUSING OÜ | 17193894 |
| VI-HOUSING OÜ | 16451561 |
| EGGERA HOUSING OÜ | 14189722 |
| LUMY HOUSING OÜ | 17299470 |
| VERTICAL HOUSING OÜ kustutatud (former name Kumpulalaw OÜ) | 14007508 |
| BALTIC HOUSING OÜ | 16470127 |
| LIVONIA HOUSING OÜ | 11007347 |
| HOUNI OÜ (former name ArrowheadNordic OÜ) | 16532756 |
| BALTIC HOUSING GROUP OÜ kustutatud | 11044615 |
| M.T. HOUSING OÜ | 14750213 |
| FASHION & HOUSING GROUP OÜ | 12527847 |
| YIT EE HOUSING I OÜ kustutatud | 14208081 |
| OL-LA FOOD & HOUSING OÜ kustutatud | 16279464 |
| J&S HOUSING SERVICES OÜ kustutatud | 12917927 |
| BLUE HIPPO OÜ (former name Metsi Housing OÜ) | 14149071 |
| ENUGU ASATA OÜ (former name SPH Housing OÜ) | 10850716 |
| 4 HOLDING OÜ | 16019651 |
| 0815 HOLDING OÜ | 17458542 |
| 828 HOLDING OÜ | 16829982 |
| 222 HOLDING OÜ | 17391695 |
| 77 HOLDING OÜ kustutatud | 12994690 |
| FOODINI OÜ | 12977639 |
| 81 HOLDING OÜ | 14243166 |
| HOLDING 2000 OÜ (former name ECVentures OÜ) | 14908507 |
| 24 HOLDING OÜ | 11170403 |
| 977 HOLDING OÜ kustutatud | 14999384 |
| EHITUSFIRMA FEERUM OÜ (former name MVM Housing OÜ) | 11289082 |
| HOLINI OÜ (former name Analytics Nomad OÜ) | 12983019 |
| LT HOLDING OÜ | 16564472 |
| JT HOLDING OÜ | 12084195 |
| RKR HOLDING OÜ | 16075552 |
| ROHE HOLDING OÜ | 16414643 |
| VHR HOLDING OÜ (former name VHR HALDUS OÜ) | 12720219 |
| VIMBERG HOLDING OÜ | 12752165 |
| EURO HOLDING OÜ | 16281656 |
| ARTPRI HOLDING OÜ | 16092671 |
| RAPIDON HOLDING OÜ | 17163479 |
| GAFOL HOLDING OÜ | 17174945 |
| PROFIT HOLDING OÜ | 17282273 |
| IPSOIURE HOLDING OÜ | 17341604 |
| KOREST HOLDING OÜ | 17475782 |
| ORGMAG HOLDING OÜ | 14543514 |