The United Republic of Tanzania
CONTRACTORS REGISTRATION BOARD
The United Republic of Tanzania
CONTRACTORS REGISTRATION BOARD
| No. | Company Name | Registration Number | Managing Director | Type of Contractor | Class | Category | Physical Address | Postal Address | Town | Action |
|---|---|---|---|---|---|---|---|---|---|---|
| 1. | OMICRON POWER SOLUTION COMPANY LIMITED | SPE3/783/03/2022 | JUMA JUMA | SPECIALIST ELECTRICAL | 3 | Local | P.O BOX 851 | DAR ES SALAAM | Details | |
| 2. | OMNITECH ENGINEERING COMPANY LIMITED | SPE3/782/03/2022 | JOVINA MROSO | SPECIALIST ELECTRICAL | 3 | Local | TEGETA NAMANGA NEAR RABINSIA HOSP | P.O. BOX 75080 | DSM | Details |
| 3. | ON AFRICA CONSTRUCTION LIMITED | B1/284/07/2026 | NIAZHAN SHERMOHAMED | BUILDING | 1 | Local | KIGAMBONI, GEZAULOLE, BLOCK 15 PLOT 588 | P.O.BOX 5447 | DODOMA | Details |
| 4. | ON AFRICA CONSTRUCTION LIMITED | C1/238/07/2026 | NIAZHAN SHERMOHAMED | CIVIL | 1 | Local | KIGAMBONI, GEZAULOLE | P.O.BOX 5447 | DODOMA | Details |
| 5. | ONASSA 2000 CORPORATION LIMITED | B5/0620/08/2011 | GEORGE MTAMBALIKE | BUILDING | 5 | Local | KPM No. 715 | P.O. BOX 75356 | DAR ES SALAAM | Details |
| 6. | ONASSA 2000 CORPORATION LIMITED | C5/0495/08/2011 | GEORGE MTAMBALIKE | CIVIL | 5 | Local | KPM No. 715 | P.O. BOX 75356 | DAR ES SALAAM | Details |
| 7. | ONE BELT ELECTRICAL TECHNOLOGY GROUP LIMITED | E1/134/02/2026 | WANG WEIZHENG | ELECTRICAL | 1 | Foreign | PLOT NO. 16 BLOCK I KISIWANI STREET UBUNGO DAR ES SALAAM | P.O. BOX 75935 | DAR ES SALAAM | Details |
| 8. | ONE NAGG GROUP LIMITED | C1/192/03/2025 | MOHAMED NASSOR | CIVIL | 1 | Local | MEDELI - STATE OIL BUILDING DODOMA CITY | P. O. BOX 10250 | DODOMA | Details |
| 9. | ONE NAGG GROUP LIMITED | E2/167/09/2026 | MOHAMED NASSOR | ELECTRICAL | 2 | Local | MEDELI - STATE OIL BUILDING DODOMA CITY | P. O. BOX 10250 | DODOMA | Details |
| 10. | ONE NAGG GROUP LIMITED | M2/30/09/2026 | MOHAMED NASSOR | MECHANICAL | 2 | Local | MEDELI - STATE OIL BUILDING DODOMA CITY | P. O. BOX 10250 | DODOMA | Details |
| 11. | ONE NAGG GROUP LIMITED | B2/222/03/2025 | MOHAMED NASSOR | BUILDING | 2 | Local | MEDELI - STATE OIL BUILDING DODOMA CITY | P. O. BOX 10250 | DODOMA | Details |
| 12. | ONECS WORKERS GROUP | SPC2/348/08/2026 | ODILIA MLAY | SPECIALIST CIVIL | 2 | Local | ENGOSENGIU | P.O.BOX 2403 ARUSHA | ARUSHA | Details |
| 13. | ONEJH MECHANICAL ENGINEERING & FABRICATION LIMITED | M6/123/01/2025 | ONESMO MKUWA | MECHANICAL | 6 | Local | P.O BOX 72745 | DAR ES SALAAM | Details | |
| 14. | ONESTRUCTURE CONTRACTORS COMPANY LIMITED | B6/1556/07/2022 | ESTHER YEKENYA | BUILDING | 6 | Local | MAGOMENI USALAMA, MOROGORO ROAD, PLOT NO.5 BLOCK NO.40, HOUSE NO.5, DAR-ES-SALAAM | P.O.BOX 1779 | DAR-ES-SALAAM | Details |
| 15. | ONESTRUCTURE CONTRACTORS COMPANY LIMITED | C6/2475/07/2022 | ESTHER YEKENYA | CIVIL | 6 | Local | MAGOMENI USALAMA, MOROGORO ROAD, PLOT NO.5 BLOCK NO.40, HOUSE NO.5, DAR-ES-SALAAM | P.O.BOX 1779 | DAR-ES-SALAAM | Details |
| 16. | ONEVISION COMPANY LIMITED | C6/2699/06/2023 | JAMSON KANYIKI | CIVIL | 6 | Local | PLOT NO 6 BLOCK 'D' MANGA VETA | P.O BOX 1593 | MBEYA | Details |
| 17. | ONEVISION COMPANY LIMITED | B6/1715/06/2023 | JAMSON KANYIKI | BUILDING | 6 | Local | PLOT NO 6 BLOCK 'D' MANGA VETA | P.O BOX 1593 | MBEYA | Details |
| 18. | ONGUJO INVESTMENT COMPANY LIMITED | C3/179/11/2023 | ONGUJO NYAMARWA | CIVIL | 3 | Local | SEGEREA STREET | P.O. BOX 616 | DAR ES SALAAM | Details |
| 19. | ONGUJO INVESTMENT COMPANY LIMITED | B3/160/11/2023 | ONGUJO NYAMARWA | BUILDING | 3 | Local | SEGEREA STREET | P.O. BOX 616 | DAR ES SALAAM | Details |
| 20. | ONIKA WOMEN GROUP | SPC3/1250/11/2021 | NDENINGWA KITOMARI | SPECIALIST CIVIL | 3 | Local | NEW STAND STREET - SHINYANGA | P.O.BOX 575 | SHINYANGA | Details |
| 21. | ONIKE COMPANY LIMITED | C6/2405/04/2022 | ANDREW SHAYO | CIVIL | 6 | Local | KILUNGULE STREET KIMARA | P.O. BOX 45671 | DAR ES SALAAM | Details |
| 22. | ONYANGO COMPANY LIMITED | B7/4860/11/2023 | SALIM NYANGE | BUILDING | 7 | Local | IYUNGA | P. O. BOX 131 | MBEYA | Details |
| 23. | OPET CONSTRUCTION COMPANY LIMITED | B6/1534/05/2022 | PETER MWIJARUBI | BUILDING | 6 | Local | MAKONGO JUU | P. O. 15789 | DAR ES SALAAM | Details |
| 24. | OPET CONSTRUCTION COMPANY LIMITED | C6/2507/08/2022 | PETER MWIJARUBI | CIVIL | 6 | Local | MAKONGO JUU | P. O. 15789 | DAR ES SALAAM | Details |
| 25. | OPHRA ENTERPRISES COMPANY LIMITED | SPE2/478/12/2025 | DEUSDEDITH NG'WILABUZU | SPECIALIST ELECTRICAL | 2 | Local | HOUSE NO. 25 MSANYENGE STREET, KATORO | P. O. BOX 105 | KATORO | Details |
| 26. | OPPE CONSTRUCTION SERVICES COMPANY LIMITED | C6/2920/03/2024 | JACKSON MISHWARO | CIVIL | 6 | Local | MIYUJI MPAMAA NEAR ESPERANZA HOTEL | P.O BOX 1249 | DODOMA | Details |
| 27. | OPPE CONSTRUCTION SERVICES COMPANY LIMITED | E5/438/03/2024 | JACKSON MISHWARO | ELECTRICAL | 5 | Local | MIYUJI MPAMAA NEAR ESPERANZA HOTEL | P.O BOX 1249 | DODOMA | Details |
| 28. | OPTIMA INCORPORATED LIMITED | C5/1947/12/2025 | DENIS MALEWA | CIVIL | 5 | Local | MBEZI JUU | P. O. BOX 14687 | DAR ES SALAAM | Details |
| 29. | OPTIMA INCORPORATED LIMITED | B5/2021/12/2025 | DENIS MALEWA | BUILDING | 5 | Local | KAYUNI STREET, MBEZI JUU | P. O. BOX 14687 | DAR ES SALAAM | Details |
| 30. | OPTIMUM ENGINEERING WORKS LTD | C6/2030/02/2019 | DAVID MLAKI | CIVIL | 6 | Local | KIJITONYAMA DSM | P.O. BOX 10451 | DAR ES SALAAM | Details |
| 31. | OPTIMUM ENGINEERING WORKS LTD | SPE3/736/02/2019 | NICOLA MDOE | SPECIALIST ELECTRICAL | 3 | Local | KIJITONYAMA DSM | P.O. BOX 10451 | DAR ES SALAAM | Details |
| 32. | OPTIMUM ENGINEERING WORKS LTD | B6/1261/02/2019 | DAVID MLAKI | BUILDING | 6 | Local | KIJITONYAMA DSM | P.O. BOX 10451 | DAR ES SALAAM | Details |
| 33. | OPTIMUM HOLDINGS (T) LIMITED | B6/1740/07/2023 | WOLFGANG KING'OLA | BUILDING | 6 | Local | BAGAMOYO - MAPINGA | P.O. BOX 66622 | DAR ES SALAAM | Details |
| 34. | OPTIMUM HOLDINGS (T) LIMITED | C6/2713/07/2023 | WOLFGANG KING'OLA | CIVIL | 6 | Local | BAGAMOYO - MAPINGA | P.O. BOX 66622 | DAR ES SALAAM | Details |
| 35. | OPTIMUS ENGINEERING SOLUTION LIMITED | C6/3371/08/2026 | PHILEMON NDUCHA | CIVIL | 6 | Local | SOKOINE STREET MBEYA TOWN | P.O BOX 425 | MBEYA | Details |
| 36. | OPTIMUS KINGDOM LIMITED | E4/275/04/2026 | HELLEN KYABUGUTA | ELECTRICAL | 4 | Local | SEGEREA | P.O BOX 33041 | DAR ES SALAAM | Details |
| 37. | ORAMIKO CONSTRUCTION LIMITED | C5/770/11/2014 | AMANI KIMARO | CIVIL | 5 | Local | P.O. BOX 33081 | DAR ES SALAAM | Details | |
| 38. | ORANGE TANZANIA LIMITED | B4/538/04/2016 | HAMIDU MVUNGI | BUILDING | 4 | Local | PLOT NO. 636, BLOCK 59 | P.O. BOX 79245 | DSM | Details |
| 39. | ORASCOM CONSTRUCTION AND ENGINEERING COMPANY TANZANIA LIMITED | C5/936/06/2017 | MAGIRA MASEGESA | CIVIL | 5 | Local | P.O. BOX 8440 | DSM | Details | |
| 40. | ORASCOM CONSTRUCTION AND ENGINEERING COMPANY TANZANIA LIMITED | B5/1121/06/2017 | MAGIRA MASEGESA | BUILDING | 5 | Local | P.O. BOX 8440 | DSM | Details | |
| 41. | ORASCOM CONSTRUCTION AND ENGINEERING COMPANY TANZANIA LIMITED | E4/105/06/2017 | MAGIRA MASEGESA | ELECTRICAL | 4 | Local | P.O. BOX 8440 | DSM | Details | |
| 42. | ORCHID CONTRACTOR LIMITED | E7/667/06/2026 | BAKARI MWINYIWIWA | ELECTRICAL | 7 | Local | PLOT NO. 2010 BLOCK D SINZA KINONDONI MUNICIPALITY, DAR ES SALAAM. | P.O.BOX 14829 DSM | KINONDONI | Details |
| 43. | ORCHID INVESTMENT LIMITED | C6/2495/07/2022 | JOAN LAISER | CIVIL | 6 | Local | P.O BOX 5683 | DSM | Details | |
| 44. | ORCHID INVESTMENT LIMITED | E5/361/05/2022 | JOAN LAISER | ELECTRICAL | 5 | Local | P.O BOX 5683 | DSM | Details | |
| 45. | OREKU CONSTRUCTION COMPANY LIMITED | C6/2104/10/2019 | NURU ODOL | CIVIL | 6 | Local | TB/TG/309. TABATA BIMA | P.O.BOX 17492 | DSM | Details |
| 46. | OREKU CONSTRUCTION COMPANY LIMITED | B7/4697/10/2019 | NURU ODOL | BUILDING | 7 | Local | TB/TG/309. TABATA BIMA | P.O.BOX 17492 | DSM | Details |
| 47. | ORGANES CONTRACTORS CO. LIMITED | B5/0403/06/2008 | ORGANES SWAI | BUILDING | 5 | Local | HOUSE NO. M3 | P.O.BOX 69 | LUSHOTO | Details |
| 48. | ORGANES CONTRACTORS CO. LIMITED | C5/0533/11/2011 | ORGANES SWAI | CIVIL | 5 | Local | HOUSE NO. M3 | P.O.BOX 69 | LUSHOTO | Details |
| 49. | ORIEKA DEVELOPERS | B7/4922/07/2026 | RICHARD TENGA | BUILDING | 7 | Local | BANGULO | P. O. BOX 78996 | ILALA | Details |
| 50. | ORIGINAL QUALITY WORKS INVESTMENT LIMITED | B7/2850/08/2011 | ORIGINAL CHRIPHORD | BUILDING | 7 | Local | KENNEDY STREET | P.O. BOX 330 | MUSOMA | Details |