| Company name | Reg. code |
|---|---|
| PREHAB OÜ | 12546276 |
| PRELAB OÜ | 12789932 |
| MP PREFAB OÜ (former name MP Trade Agency OÜ) | 14839752 |
| PREFAB PRODUCTION OÜ | 17466033 |
| HAGS PREFAB OÜ | 16475202 |
| PREFAB GROUP OÜ (former name Ösel House OÜ) | 12173906 |
| THÖRN PREFAB OÜ | 17024714 |
| TAMAISTO PREFAB OÜ | 16154932 |
| INHUS PREFAB OÜ (former name OÜ TMB Element) | 12560626 |
| BORDERLESS PREFAB OÜ | 16957409 |
| HARMET PREFAB OÜ | 14938847 |
| WOODEC PREFAB OÜ (former name Savetime OÜ) | 12821854 |
| Q PREFAB OÜ kustutatud (former name Revolution Prefab OÜ) | 14644244 |
| AIVAL PREFAB OÜ kustutatud | 14651646 |
| ÖSEL PREFAB OÜ kustutatud (former name Lilp OÜ) | 16212632 |
| PREFAB EHITUS OÜ | 11952347 |
| MM PREFAB OÜ kustutatud | 16476041 |
| PREFAB ELEMENT OÜ | 14595422 |
| NORDIC PREFAB OÜ | 16970568 |
| KMT PREFAB OÜ | 10861173 |
| PINSKA PREFAB OÜ | 16124141 |
| PREAB INVEST OÜ kustutatud | 10467466 |
| NORDIC PREFAB.HOUSES OÜ | 11011952 |
| MASSIVA CLT PREFAB OÜ | 16466969 |
| NORD HOMES PREFAB OÜ (former name Nord Prefab) | 12664745 |
| PREFAV OÜ | 16200669 |
| PRESA OÜ | 14034439 |
| PREMA OÜ | 10846979 |
| PREVA OÜ | 11910751 |
| PRENAR TRADING OÜ | 11624790 |
| HAPPY HOME EHITUS OÜ (former name HH prefab OÜ) | 12016779 |
| CITY WORKS OÜ (former name Prefab Project OÜ) | 12757599 |
| PREMA INNOVATIONS OÜ (former name STD Corporation OÜ) | 14620350 |
| DALIA PREMA OÜ | 16775513 |
| PREMA LIGHT OÜ | 11686650 |
| PREMA TRADE OÜ | 11657482 |
| PREMA ESTATE OÜ kustutatud | 11011874 |
| PREB OÜ kustutatud | 16684851 |
| QHP123 OÜ (former name Q-haus Prefab OÜ) | 14612959 |
| SERVERLESS REHAB OÜ | 16603367 |
| REHAB BASE OÜ | 17004410 |
| REHAB FUTUREKIDS OÜ kustutatud | 11622845 |
| TEAM REHAB OÜ kustutatud (former name Rymdupplevelsebolaget OÜ) | 14075199 |
| VIRTUAL REHAB OÜ | 14560145 |
| REHAB & FITNESS OÜ | 12725228 |
| MERHAB OÜ kustutatud | 11722541 |
| PEEMAB OÜ | 14525367 |
| PROLAB OÜ | 14396792 |
| REEHAB OÜ | 16319749 |
| REKAB OÜ kustutatud | 10689528 |