Industry code 71.121 · Oslo
Building engineering consultancy in Oslo
There are 925 active companies in building engineering consultancy in Oslo. 69 of them were registered in the last 12 months. Together they have 11,347 registered employees. The largest company is Multiconsult Norge AS with 2,884 employees. The oldest, Obos Prosjekt AS, was founded in 1930. 61% are limited companies.
- Active companies
- 925
- New in the last 12 months
- 69
- Registered employees
- 11,347
- Share of limited companies
- 61 %
The largest companies in building engineering consultancy in Oslo
Sorted by number of employees. Figures are from the Register of Legal Entities and the Register of Company Accounts.
| # | Company | Org. no. | Employees | Revenue | Founded |
|---|---|---|---|---|---|
| 1 | Multiconsult Norge AS | 918836519 | 2,884 | NOK 5.2 bn | 2017 |
| 2 | Sweco Norge AS | 967032271 | 2,256 | NOK 3.7 bn | 1993 |
| 3 | Rambøll Norge AS | 915251293 | 1,412 | NOK 2.2 bn | 1957 |
| 4 | Cowi AS | 979364857 | 1,322 | NOK 2.4 bn | 1997 |
| 5 | Hrp AS | 988889245 | 458 | NOK 745.1 m | 2005 |
| 6 | Afry Norway Advisory AS | 883889762 | 429 | NOK 1.5 bn | 2001 |
| 7 | Wsp Norge AS | 881894742 | 401 | NOK 827.4 m | 2000 |
| 8 | Afry Norway AS | 915229719 | 367 | NOK 656 m | 2015 |
| 9 | Metier AS | 917807590 | 234 | NOK 822.5 m | 2016 |
| 10 | Viljr AS | 936273580 | 138 | NOK 1.6 m | 2025 |
| 11 | Opak AS | 960816862 | 127 | NOK 231.6 m | 1990 |
| 12 | Brekke & Strand Akustikk AS | 916863071 | 91 | NOK 175.3 m | 2016 |
| 13 | Obos Prosjekt AS | 931536532 | 85 | NOK 155.4 m | 1930 |
| 14 | Scan Survey AS | 850397252 | 59 | NOK 100.9 m | 1988 |
| 15 | Vedal Prosjekt AS | 985205027 | 56 | NOK 135.8 m | 2002 |
| 16 | Itech AS | 959686017 | 51 | NOK 95.1 m | 1991 |
| 17 | Insenti AS | 996043851 | 42 | NOK 278.6 m | 2010 |
| 18 | Afry Group Norway AS | 911567989 | 38 | NOK 81.3 m | 2013 |
| 19 | Stor-Oslo Eiendom AS | 994931369 | 33 | NOK 59.5 m | 2009 |
| 20 | Aase Prosjekt AS | 990238316 | 32 | NOK 84.6 m | 2006 |
| 21 | Opv Consulting AS | 917880697 | 30 | NOK 47.1 m | 2016 |
| 22 | AS Bygganalyse | 940922410 | 30 | NOK 62 m | 1986 |
| 23 | Multiconsult ASA | 910253158 | 28 | NOK 6.6 bn | 1973 |
| 24 | Thon Eiendomsprosjekt AS | 922322007 | 27 | NOK 54.2 m | 2019 |
| 25 | Saas Prosjekt AS | 988865494 | 26 | NOK 54 m | 2005 |
Newest companies in building engineering consultancy in Oslo
- Dyrnes Consulting3 Nov 2026
- Myrann Mekk27 Oct 2026
- Hagen Linnerud Consult19 Oct 2026
- Mga Property AS15 Oct 2026
- Campanula AS12 Oct 2026
- Eider Engineering AS7 Oct 2026
- Viken Bærekraftig Utvikling Norge AS7 Oct 2026
- Viken Bærekraftig Utvikling AS Tvangsavviklingsbo29 Sept 2026
- Årmal Prosjekt22 Sept 2026
- William Jenssen Management17 Sept 2026
Frequently asked questions
How many companies in building engineering consultancy are there in Oslo?
The Register of Legal Entities lists 925 active companies in building engineering consultancy in Oslo. 69 of them were registered in the last 12 months.
Which is the largest company in building engineering consultancy in Oslo?
Multiconsult Norge AS is the largest by number of employees, with 2,884 employees. The organisation number is 918836519.
How many people work in building engineering consultancy in Oslo?
The companies have 11,347 registered employees in total. The figures are based on employee counts in the Register of Legal Entities, and 25 of the 25 largest companies have reported employees.
How long have there been companies in building engineering consultancy in Oslo?
The oldest active company, Obos Prosjekt AS, was founded in 1930. 61% of the companies are limited companies.
Source: the Register of Legal Entities and the Register of Company Accounts. The overview shows active companies registered in the municipality with industry code 71.121. Figures are updated continuously.