Industry code 43.4 · Oslo
Specialised construction activities related to building construction in Oslo
There are 113 active companies in specialised construction activities related to building construction in Oslo. 8 of them were registered in the last 12 months. Together they have 643 registered employees. The largest company is Geo Fundamentering & Bergboring AS with 126 employees. The oldest, City Taktekking AS, was founded in 1951. 58% are limited companies.
- Active companies
- 113
- New in the last 12 months
- 8
- Registered employees
- 643
- Share of limited companies
- 58 %
The largest companies in specialised construction activities related to building construction 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 | Geo Fundamentering & Bergboring AS | 926836854 | 126 | NOK 576.9 m | 2021 |
| 2 | A. Hansen Gruppen AS | 963544731 | 107 | NOK 251.5 m | 1992 |
| 3 | Franke Onsrud Blikkslageri AS | 948310082 | 58 | NOK 99.6 m | 1988 |
| 4 | Storo Blikkenslagerverksted AS | 981237293 | 38 | NOK 94.3 m | 1999 |
| 5 | Olaf Johansens Eftf AS | 944685987 | 33 | NOK 43.9 m | 1987 |
| 6 | Nantak AS | 825044132 | 26 | NOK 6.4 m | 2020 |
| 7 | Oslo Blikkenslagermester AS | 922541639 | 26 | NOK 20.1 m | 2019 |
| 8 | Sigfred Bentzen & Sønn AS | 910462105 | 21 | NOK 26.3 m | 1963 |
| 9 | Adamstuen Blikkenslageri AS | 931593153 | 20 | NOK 33.4 m | 2023 |
| 10 | City Taktekking AS | 911065290 | 18 | NOK 26.3 m | 1951 |
| 11 | Storbråten AS | 922935939 | 18 | NOK 30.4 m | 2019 |
| 12 | Norges Tak & Blikk AS | 832738662 | 16 | NOK 17.2 m | 2023 |
| 13 | Kaarud AS | 913068920 | 15 | NOK 22.6 m | 2014 |
| 14 | Team Vent AS | 992576073 | 14 | NOK 21.9 m | 2008 |
| 15 | Multirehab AS | 918714227 | 13 | NOK 10.5 m | 2017 |
| 16 | Solid Eiendomsservice AS | 927404087 | 13 | NOK 19.8 m | 2021 |
| 17 | Blikkenslagermestrene Henry Hansen & Sønn AS | 912360997 | 12 | NOK 48.8 m | 1966 |
| 18 | Tegan Membran Og Taksikring AS | 936076424 | 10 | – | 2025 |
| 19 | Betongarbeid AS | 812016482 | 8 | NOK 24.2 m | 2013 |
| 20 | Albretsen & Grohshennig AS | 980622517 | 8 | NOK 12.4 m | 1999 |
| 21 | Best I Høyden AS | 934268792 | 7 | NOK 5.2 m | 2024 |
| 22 | Silotrust AS | 936365035 | 7 | NOK 944.7k | 2025 |
| 23 | Ekrogn Tak Og Membran AS | 920975240 | 6 | NOK 12.1 m | 2018 |
| 24 | Teqt Norge AS | 929418727 | 6 | NOK 14.5 m | 2022 |
| 25 | Gamlebyen Blikk AS | 960011171 | 6 | NOK 9.7 m | 1991 |
Newest companies in specialised construction activities related to building construction in Oslo
- Sd Total Bygg Drabik19 Oct 2026
- Blikkenslagermesterne AS2 Sept 2026
- Lewis-Imoro28 Jul 2026
- Hebæk Tak1 Jul 2026
- Kwieks Takspesialisten23 Apr 2026
- Aamlid Berman Blikk30 Mar 2026
- Hjem Entreprenør AS19 Feb 2026
- Storum Betongpumping27 Jan 2026
- Silotrust AS13 Oct 2025
- Rexhaj Holding AS13 Oct 2025
Frequently asked questions
How many companies in specialised construction activities related to building construction are there in Oslo?
The Register of Legal Entities lists 113 active companies in specialised construction activities related to building construction in Oslo. 8 of them were registered in the last 12 months.
Which is the largest company in specialised construction activities related to building construction in Oslo?
Geo Fundamentering & Bergboring AS is the largest by number of employees, with 126 employees. The organisation number is 926836854.
How many people work in specialised construction activities related to building construction in Oslo?
The companies have 643 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 specialised construction activities related to building construction in Oslo?
The oldest active company, City Taktekking AS, was founded in 1951. 58% 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 43.4. Figures are updated continuously.