Industry code 43.2 · Oslo
Electrical, plumbing and other construction installation activities in Oslo
There are 1,255 active companies in electrical, plumbing and other construction installation activities in Oslo. 99 of them were registered in the last 12 months. Together they have at least 17,681 registered employees. The largest company is Bravida Norge AS with 3,375 employees. The oldest, S B Pettersen Elektro AS, was founded in 1914. 74% are limited companies.
- Active companies
- 1,255
- New in the last 12 months
- 99
- Registered employees
- ≥ 17,681
- Share of limited companies
- 74 %
The largest companies in electrical, plumbing and other construction installation activities 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 | Bravida Norge AS | 987582561 | 3,375 | NOK 5.7 bn | 2004 |
| 2 | Gk Norge AS | 915892981 | 1,845 | NOK 4.8 bn | 2015 |
| 3 | Caverion Norge AS | 959069743 | 1,821 | NOK 3.8 bn | 1990 |
| 4 | Assemblin AS | 965808752 | 670 | NOK 1.7 bn | 1992 |
| 5 | Oneco Elektro AS | 996669173 | 622 | NOK 2 bn | 2011 |
| 6 | Oneco Networks AS | 987210001 | 565 | NOK 1.4 bn | 2004 |
| 7 | Kone Aksjeselskap | 918201548 | 354 | NOK 913 m | 1973 |
| 8 | Tk Elevator Norway AS | 828447742 | 186 | NOK 405.3 m | 1975 |
| 9 | Lysteknikk Elektroentreprenør AS | 995971135 | 162 | NOK 330.4 m | 2010 |
| 10 | Otis AS | 919419105 | 147 | NOK 399.3 m | 1973 |
| 11 | Assa Abloy Entrance Systems Norway AS | 919496126 | 147 | NOK 487.4 m | 1970 |
| 12 | Datek Installasjon AS | 916110529 | 143 | NOK 174.4 m | 2015 |
| 13 | Therma Industri AS | 991863796 | 134 | NOK 439.3 m | 2007 |
| 14 | Rør System AS | 996754316 | 134 | NOK 117.9 m | 2011 |
| 15 | Randem & Hübert AS | 989653245 | 129 | NOK 560.3 m | 2006 |
| 16 | Teira Norway AS | 935916968 | 124 | – | 2025 |
| 17 | Eltera AS | 811600792 | 119 | NOK 247 m | 2013 |
| 18 | Assemblin Caverion Norge AS | 943623341 | 118 | – | 1987 |
| 19 | Elektro-Kontakten AS | 923685464 | 111 | NOK 178.5 m | 2019 |
| 20 | Boligelektrikeren AS | 996446972 | 105 | NOK 155 m | 2011 |
| 21 | Rett Elektro AS | 820292642 | 103 | NOK 126 m | 2018 |
| 22 | Hancom AS | 999301789 | 103 | – | 2012 |
| 23 | Co2oltec Commercial Refrigeration Norway AS | 981495977 | 100 | NOK 475.8 m | 2000 |
| 24 | Haaland Klima AS | 986897526 | 97 | NOK 426.6 m | 2004 |
| 25 | Eda Elektro Data Oslo AS | 929512952 | 94 | NOK 161.6 m | 1981 |
Newest companies in electrical, plumbing and other construction installation activities in Oslo
- Rørværk AS4 Nov 2026
- Nye El-Installasjon AS28 Oct 2026
- Sia Reovant NUF19 Oct 2026
- Kinunda Vvs15 Oct 2026
- Flexmont AS7 Oct 2026
- Rør System Ii AS2 Oct 2026
- Gamle Oslo Vvs AS30 Sept 2026
- Rørklar Varberg14 Sept 2026
- Elektro Lars AS11 Sept 2026
- Lunden Elektro AS9 Sept 2026
Frequently asked questions
How many companies in electrical, plumbing and other construction installation activities are there in Oslo?
The Register of Legal Entities lists 1,255 active companies in electrical, plumbing and other construction installation activities in Oslo. 99 of them were registered in the last 12 months.
Which is the largest company in electrical, plumbing and other construction installation activities in Oslo?
Bravida Norge AS is the largest by number of employees, with 3,375 employees. The organisation number is 987582561.
How many people work in electrical, plumbing and other construction installation activities in Oslo?
The companies have at least 17,681 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 electrical, plumbing and other construction installation activities in Oslo?
The oldest active company, S B Pettersen Elektro AS, was founded in 1914. 74% of the companies are limited companies.
Other industries in the same group in Oslo
Source: the Register of Legal Entities and the Register of Company Accounts. The overview shows active companies registered in the municipality with industry code 43.2. Figures are updated continuously.