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. | OINWAN BUILDERS LIMITED | C6/2514/08/2022 | GWICHALA HEMANA | CIVIL | 6 | Local | GOBA ROAD | P.O. BOX 8617 | DAR ES SALAAM | Details |
| 2. | OINWAN BUILDERS LIMITED | B6/1586/08/2022 | GWICHALA HEMANA | BUILDING | 6 | Local | GOBA ROAD | P.O. BOX 8617 | DAR ES SALAAM | Details |
| 3. | OK ELECTRICAL AND ELECTRONICS SERVICES LIMITED | C4/705/12/2025 | MRISHO MASUDI | CIVIL | 4 | Local | HOUSE NO. 36 PLOT NO. 118 BLOCK AA MBURAHATI BARAFU STREET DAR ES SALAAM | P.O.BOX 13390 | DAR ES SALAAM | Details |
| 4. | OK ELECTRICAL AND ELECTRONICS SERVICES LIMITED | E1/0053/08/2013 | MRISHO MASUDI | ELECTRICAL | 1 | Local | BARAFU STREET | P.O.BOX 13390 | DAR ES SALAAM | Details |
| 5. | OK ELECTRICAL AND ELECTRONICS SERVICES LIMITED | SPE2/458/03/2025 | MRISHO MASUDI | SPECIALIST ELECTRICAL | 2 | Local | HOUSE NO. 36 PLOT NO. 118 BLOCK AA MBURAHATI BARAFU STREET DAR ES SALAAM | P.O.BOX 13390 | DAR ES SALAAM | Details |
| 6. | OKANE INVESTMENT | SPC3/1409/07/2022 | ADELINA MARANDO | SPECIALIST CIVIL | 3 | Local | NEW STAND - CCM BUILDING | P.O.BOX 82 | SHINYANGA CBD | Details |
| 7. | OKASSENY ENGINEERING LIMITED | B5/1242/02/2019 | PETER GASPER | BUILDING | 5 | Local | KIMARA BARUTI | BOX 6895 DSM | DAR ES SALAAM | Details |
| 8. | OKIM GENERAL SUPPLY | C6/3059/11/2024 | OKINYI MWERE | CIVIL | 6 | Local | UHINDINI STREET - DODOMA | P.O.BOX 1646 | DODOMA | Details |
| 9. | OKIM GENERAL SUPPLY | B6/1943/11/2024 | OKINYI MWERE | BUILDING | 6 | Local | UHINDINI STREET - DODOMA | P.O.BOX 1646 | DODOMA | Details |
| 10. | OKINAWA CONSTRUCTION COMPANY LIMITED | C6/2732/07/2023 | HAMID YASIN | CIVIL | 6 | Local | KITANZINI STREET MIOMBONI AREA | P.O BOX 286 | IRINGA | Details |
| 11. | OKOA WAZEE ENTREPRENEURS | SPC3/1077/11/2020 | JOSEPH NGUA | SPECIALIST CIVIL | 3 | Local | NBC STREET, CCM REGIONAL OFFICES | P.O BOX 157 | SUMBAWANGA | Details |
| 12. | OL-MESSERA CONSTRUCTION COMPANY LIMITED | B4/684/02/2022 | HASSAN MUNGAH | BUILDING | 4 | Local | MAJOHE SREET, KIVULE WARD | P. O. BOX 105452 | ILALA | Details |
| 13. | OLAMA INVESTMENT COMPANY | SPC3/1624/07/2023 | OLIVA JOHN | SPECIALIST CIVIL | 3 | Local | HOUSE NO. 66 PLOT NO. 858 BLOCK K | P.O.BOX 2596 | MWANZA | Details |
| 14. | OLD SOUTH COMPANY LIMITED | C3/125/01/2020 | BABU SOLANKI | CIVIL | 3 | Local | MAILI MOJA KIBAHA TOWNSHIP | P. O. BOX 30121 | KIBAHA | Details |
| 15. | OLD SOUTH COMPANY LIMITED | B5/1283/10/2019 | BABU SOLANKI | BUILDING | 5 | Local | OLD MOROGORO ROAD | P. O. BOX 30121 | KIBAHA | Details |
| 16. | OLDONYO LENGAI ENGINEERING COMPANY LIMITED | C5/0750/06/2014 | GASPER MASSAWE | CIVIL | 5 | Local | NJIRO STREET | P.O BOX 15115 ARUSHA | ARUSHA | Details |
| 17. | OLDONYO LENGAI ENGINEERING COMPANY LIMITED | B5/0900/06/2014 | GASPER MASSAWE | BUILDING | 5 | Local | NJIRO STREET | P.O BOX 15115 ARUSHA | ARUSHA | Details |
| 18. | OLDVAI DECORATORS & GENERAL SUPPLIERS | B6/899/11/2014 | HARRISON SHAYO | BUILDING | 6 | Local | HOUSE NO. 4 | P.O.BOX 7868 | DSM | Details |
| 19. | OLDVAI DECORATORS & GENERAL SUPPLIERS | C6/1488/11/2014 | HARRISON SHAYO | CIVIL | 6 | Local | P.O.BOX 7868 | DSM | Details | |
| 20. | OLECO LIMITED | E5/423/01/2024 | JOSH MUROWE | ELECTRICAL | 5 | Local | SAM NUJOMA ROAD, SINZA AREA | P. O. BOX 79596 | DAR ES SALAAM | Details |
| 21. | OLISTRUCT CONTRUCTION LIMITED | C6/3332/05/2026 | DANIEL MORI | CIVIL | 6 | Local | KAWE | P. O. BOX 1559 | DAR ES SALAAM | Details |
| 22. | OLMASI CONSTRUCTION COMPANY LIMITED | C6/2641/05/2023 | MADARAKA ZUBERI | CIVIL | 6 | Local | LIVERPOOL STREET, HOUSE NO. 192 | P.O. BOX 42811 | DAR ES SALAAM | Details |
| 23. | OLMASI CONSTRUCTION COMPANY LIMITED | B5/1562/05/2023 | MADARAKA ZUBERI | BUILDING | 5 | Local | LIVERPOOL STREET, HOUSE NO. 192 | P.O. BOX 42811 | DAR ES SALAAM | Details |
| 24. | OLMOLOCK ENTERPRISES | B7/4765/05/2021 | MOSES MAKALANGA | BUILDING | 7 | Local | TEGETA KIBAONI | P. O. BOX 79567 | DAR ES SALAAM | Details |
| 25. | OLMOLOCK ENTERPRISES | C6/2273/05/2021 | MOSES MAKALANGA | CIVIL | 6 | Local | TEGETA KIBAONI | P. O. BOX 79567 | DAR ES SALAAM | Details |
| 26. | OLOSOKWA GROUP LIMITED | B6/1498/02/2022 | JESCA MAINGU | BUILDING | 6 | Local | KIHONDA MAGOROFANI, MOROGORO | BOX 602 | MOROGORO | Details |
| 27. | OLOSOKWA GROUP LIMITED | C6/2375/02/2022 | JESCA MAINGU | CIVIL | 6 | Local | KIHONDA MAGOROFANI, MOROGORO | BOX 602 | MOROGORO | Details |
| 28. | OLPESI CIVIL ENGINEERING LIMITED | C5/1744/11/2024 | OLOF MITILI | CIVIL | 5 | Local | P.O BOX 792 | DAR ES SALAAM | Details | |
| 29. | OLPESI CIVIL ENGINEERING LIMITED | B5/1840/11/2024 | OLOF MITILI | BUILDING | 5 | Local | P.O BOX 792 | DAR ES SALAAM | Details | |
| 30. | OLSH COMPANY LIMITED | B2/273/09/2025 | EMMANUEL TLUWAY | BUILDING | 2 | Local | KAGURU STREET | P.O. BOX65049 | DAR ES SALAAM | Details |
| 31. | OLSH COMPANY LIMITED | C4/638/03/2025 | EMMANUEL TLUWAY | CIVIL | 4 | Local | KAGURU STREET | P.O. BOX65049 | DAR ES SALAAM | Details |
| 32. | OMAGIB CONSTRUCTION COMPANY LIMITED | SPC3/1420/08/2022 | ABEL MAJALIWA | SPECIALIST CIVIL | 3 | Local | P.O. BOX 2979 | ILEMELA | Details | |
| 33. | OMAKEN GENERAL SUPPLIES | C7/1257/04/2007 | OMARI NURDIN | CIVIL | 7 | Local | IMCU BUILDING | P.O. BOX 1017 IRINGA | IRINGA | Details |
| 34. | OMASIMO CONSTRUCTION COMPANY LIMITED | C7/2143/10/2013 | JUMA OMARI | CIVIL | 7 | Local | PLOT NO. 42254, BLOCK B | P.O. BOX 8948 | MOSHI | Details |
| 35. | OMASIMO CONSTRUCTION COMPANY LIMITED | B7/4147/10/2013 | JUMA OMARI | BUILDING | 7 | Local | PLOT NO. 42254, BLOCK B | P.O. BOX 8948 | MOSHI | Details |
| 36. | OMATEK (T) LIMITED | E6/267/06/2024 | OMARY KASEJA | ELECTRICAL | 6 | Local | TOANGOMA, KIGAMBONI, DAR ES SALAAM NEAR USAGARA PETROL STATION | P.O.BOX 79793 | DAR ES SALAAM | Details |
| 37. | OMICRON POWER SOLUTION COMPANY LIMITED | SPE3/783/03/2022 | JUMA JUMA | SPECIALIST ELECTRICAL | 3 | Local | P.O BOX 851 | DAR ES SALAAM | Details | |
| 38. | 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 |
| 39. | 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 |
| 40. | ON AFRICA CONSTRUCTION LIMITED | C1/238/07/2026 | NIAZHAN SHERMOHAMED | CIVIL | 1 | Local | KIGAMBONI, GEZAULOLE | P.O.BOX 5447 | DODOMA | Details |
| 41. | ONASSA 2000 CORPORATION LIMITED | B5/0620/08/2011 | GEORGE MTAMBALIKE | BUILDING | 5 | Local | KPM No. 715 | P.O. BOX 75356 | DAR ES SALAAM | Details |
| 42. | ONASSA 2000 CORPORATION LIMITED | C5/0495/08/2011 | GEORGE MTAMBALIKE | CIVIL | 5 | Local | KPM No. 715 | P.O. BOX 75356 | DAR ES SALAAM | Details |
| 43. | 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 |
| 44. | 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 |
| 45. | 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 |
| 46. | 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 |
| 47. | 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 |
| 48. | ONECS WORKERS GROUP | SPC2/348/08/2026 | ODILIA MLAY | SPECIALIST CIVIL | 2 | Local | ENGOSENGIU | P.O.BOX 2403 ARUSHA | ARUSHA | Details |
| 49. | ONEJH MECHANICAL ENGINEERING & FABRICATION LIMITED | M6/123/01/2025 | ONESMO MKUWA | MECHANICAL | 6 | Local | P.O BOX 72745 | DAR ES SALAAM | Details | |
| 50. | 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 |