Industry code 71.1 · Oslo
Architectural and engineering activities and related technical consultancy in Oslo
There are 4,790 active companies in architectural and engineering activities and related technical consultancy in Oslo. 426 of them were registered in the last 12 months. Together they have at least 21,547 registered employees. The largest company is Multiconsult Norge AS with 2,884 employees. The oldest, Norsk Energi, was founded in 1916. 54% are limited companies.
- Active companies
- 4,790
- New in the last 12 months
- 426
- Registered employees
- ≥ 21,547
- Share of limited companies
- 54 %
The largest companies in architectural and engineering activities and related technical 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 | Siemens Energy AS | 915826946 | 1,198 | NOK 5.5 bn | 1960 |
| 6 | Siemens AS | 923009108 | 484 | NOK 2.4 bn | 2019 |
| 7 | Hrp AS | 988889245 | 458 | NOK 745.1 m | 2005 |
| 8 | Afry Norway Advisory AS | 883889762 | 429 | NOK 1.5 bn | 2001 |
| 9 | Wsp Norge AS | 881894742 | 401 | NOK 827.4 m | 2000 |
| 10 | Afry Norway AS | 915229719 | 367 | NOK 656 m | 2015 |
| 11 | Rystad Energy AS | 887448892 | 321 | NOK 996.4 m | 2004 |
| 12 | Goodtech AS | 984892071 | 314 | NOK 726.5 m | 2002 |
| 13 | Link Arkitektur AS | 975999726 | 253 | NOK 411.2 m | 1995 |
| 14 | Metier AS | 917807590 | 234 | NOK 822.5 m | 2016 |
| 15 | Pgs Geophysical AS | 960563085 | 225 | NOK 3.9 bn | 1991 |
| 16 | Nordic Office Of Architecture AS | 920013899 | 215 | NOK 399.5 m | 2017 |
| 17 | Fugro Norway AS | 969059789 | 200 | NOK 1.3 bn | 1994 |
| 18 | Siemens Mobility AS | 919366060 | 196 | NOK 1.7 bn | 2017 |
| 19 | Voith Hydro AS | 980982637 | 174 | NOK 594.1 m | 1999 |
| 20 | Johnson Controls Norway AS | 940729092 | 167 | NOK 461.3 m | 1986 |
| 21 | Af Energi AS | 983480535 | 143 | NOK 527.9 m | 2001 |
| 22 | Nordomatic Norge AS | 919967870 | 139 | NOK 291.2 m | 2017 |
| 23 | Rejlers AS | 995500167 | 139 | NOK 323.1 m | 2010 |
| 24 | Viljr AS | 936273580 | 138 | NOK 1.6 m | 2025 |
| 25 | Sweco Architects AS | 894607262 | 131 | NOK 204 m | 2009 |
Newest companies in architectural and engineering activities and related technical consultancy in Oslo
- Dyrnes Consulting3 Nov 2026
- Pb Consulting AS30 Oct 2026
- H.n Holding AS30 Oct 2026
- Jensen Geodata28 Oct 2026
- Myrann Mekk27 Oct 2026
- Eserli Byggingeniør26 Oct 2026
- Essén Arkitektur26 Oct 2026
- Safetech Production AS24 Oct 2026
- Bjørgvind Renewables AS22 Oct 2026
- Studio Cola AS21 Oct 2026
Frequently asked questions
How many companies in architectural and engineering activities and related technical consultancy are there in Oslo?
The Register of Legal Entities lists 4,790 active companies in architectural and engineering activities and related technical consultancy in Oslo. 426 of them were registered in the last 12 months.
Which is the largest company in architectural and engineering activities and related technical 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 architectural and engineering activities and related technical consultancy in Oslo?
The companies have at least 21,547 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 architectural and engineering activities and related technical consultancy in Oslo?
The oldest active company, Norsk Energi, was founded in 1916. 54% of the companies are limited companies.
Explore further
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Source: the Register of Legal Entities and the Register of Company Accounts. The overview shows active companies registered in the municipality with industry code 71.1. Figures are updated continuously.