| PROFEST PROJEKTID OÜ | 14777206 |
| TENT PROJEKTID OÜ (former name OÜ Tent Projektid OÜ) | 12725174 |
| EFTEN LAAGRI OÜ (former name Projekt 554 OÜ) | 14058888 |
| AMISTADABALTIC OÜ (former name Ronyx Projekt OÜ) | 14162574 |
| STARSHIP TECHNOLOGIES OÜ (former name Projekt Echo OÜ) | 12673365 |
| TLNP OÜ (former name Tallinna Projekt OÜ) | 10996897 |
| HR BUSINESS PARTNER OÜ (former name Asson Projekt OÜ) | 16846621 |
| SANMINDUNXIN TAIGUOGU OÜ (former name Globest Projekt OÜ) | 11973651 |
| BRUFUT BIJILO OÜ kustutatud (former name Projekt Baar OÜ) | 12728712 |
| IN-DI OÜ (former name OÜ KOBAR PROJEKT) | 11355433 |
| VERTO INVEST OÜ (former name OÜ Kassio Projekt) | 12244767 |
| RING JA RUUT IL OÜ (former name EVKA Projekt OÜ) | 12808457 |
| DNPRO OÜ (former name DN Projekt OÜ) | 11505699 |
| DESIGN PACK OÜ (former name GRT Projekt OÜ) | 12814802 |
| CLARUS INVEST OÜ (former name Nõrkvoolu Projekt OÜ) | 10922396 |
| MINDFOOD BALTIC OÜ (former name Kaurits Projekt OÜ) | 11746777 |
| LÄVEL TALLINN OÜ (former name OÜ Nominete Projekt) | 11997508 |
| HYDROPLAN OÜ (former name WASE Projekt OÜ) | 16796797 |
| MOULREEN OÜ kustutatud (former name Individ Projekt OÜ) | 14073706 |
| L-SOKKEL OÜ (former name TM Projekt OÜ) | 16418546 |
| JTAPVROKSLIKVERAAT OÜ (former name OÜ Vroks Projekt) | 14296665 |
| PRZEZ PRITYSKA OÜ kustutatud (former name U-Projekt OÜ) | 12080719 |
| MSP TRADING OÜ (former name MarinP Projekt OÜ) | 14623503 |
| FINFERONTIC OÜ kustutatud (former name OÜ Centrum Projekt) | 14226676 |
| LIIKUMISABI OÜ (former name Vool Projekt OÜ) | 12541869 |
| EFTEN TÄNASSILMA OÜ (former name EfTEN Projekt OÜ) | 14057883 |
| LOOTSI OÜ (former name Nelgi Projekt OÜ) | 14910349 |
| DEVIRA RDS OÜ (former name Skaala Projekt OÜ) | 11991643 |
| FCM PROJEKT OÜ (former name Kassisaba Projekt OÜ) | 14124295 |
| VIANORE PROJEKT OÜ (former name Aarius Projekt OÜ) | 11359885 |
| STRUDESIGN OÜ (former name Luup Projekt OÜ) | 14674239 |
| QUATTRO LUXORY OÜ (former name IMPI Projekt OÜ) | 16758455 |
| HAUSMIT OÜ kustutatud (former name OÜ Kvap Projekt) | 11198927 |
| OPTIMUM PROJEKT OÜ (former name OÜ OPTIMUM PROJEKT) | 10620896 |
| SCAFORTE OÜ (former name Metak Projekt OÜ) | 12750924 |
| CHACHOCHILA PINACULACHIA OÜ (former name Jaakson Projekt OÜ) | 14801956 |
| GIRIDARA THITHAPATHTARA OÜ (former name SVG Projekt OÜ) | 14058995 |
| ELEKTRIKILP OÜ (former name LVE projekt OÜ) | 16743128 |
| IBADAN ADEGBITE OÜ kustutatud (former name Harli Projekt OÜ) | 14209206 |
| ALPROFCO INSENERIBÜROO OÜ (former name Nelitis Projekt OÜ) | 14321854 |
| PROJET DETAILLE OÜ (former name Realia Projekt OÜ) | 12310036 |
| MAPSERV OÜ (former name Mapek Projekt OÜ) | 12341551 |
| IRENGA BURAGA OÜ (former name SRM projekt OÜ) | 14594888 |
| VK12 OÜ (former name OÜ Metropoli Projekt) | 14437108 |
| AP PROJEKTEERIMINE OÜ (former name Aatom Projekt OÜ) | 14428523 |
| NUTIRAAL OÜ (former name OÜ Miljon Projekt) | 11241008 |
| JUSTRENT OÜ (former name OÜ Trendmart) | 12537128 |
| KLIIMAONE OÜ kustutatud (former name PMV Projekt HVAC OÜ) | 14998864 |
| FREYS OÜ (former name Urmas Projekt AB OÜ) | 12013054 |
| PAMO HACHABA OÜ (former name E&A Projekt OÜ) | 12300109 |