Industry code 43.9 · Østfold
Other specialised construction activities in Fredrikstad
There are 78 active companies in other specialised construction activities in Fredrikstad. 6 of them were registered in the last 12 months. Together they have 348 registered employees. The largest company is Hammerstad Maskin AS with 72 employees. The oldest, AS Diamantboring, was founded in 1975. 60% are limited companies.
- Active companies
- 78
- New in the last 12 months
- 6
- Registered employees
- 348
- Share of limited companies
- 60 %
The largest companies in other specialised construction activities in Fredrikstad
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 | Hammerstad Maskin AS | 980404730 | 72 | NOK 80.6 m | 1998 |
| 2 | Lasse Holst AS | 951787531 | 56 | NOK 108.5 m | 1989 |
| 3 | Kranfører AS | 925777218 | 51 | NOK 34.6 m | 2020 |
| 4 | Murerfirma Roar Kristoffersen AS | 985019290 | 26 | NOK 59.8 m | 2002 |
| 5 | AS Diamantboring | 927811685 | 25 | NOK 30 m | 1975 |
| 6 | Herregårdsmur AS | 994251856 | 21 | NOK 34.3 m | 2009 |
| 7 | Submara Øst Fredrikstad AS | 932193795 | 20 | NOK 36.3 m | 2023 |
| 8 | Jng Montasje AS | 926179314 | 13 | NOK 15.4 m | 2020 |
| 9 | Borge Miljøservice AS | 925821500 | 12 | NOK 20.7 m | 2020 |
| 10 | Avretting AS | 823797222 | 11 | NOK 13.8 m | 2019 |
| 11 | Sealtech AS | 921052308 | 10 | NOK 4.2 m | 2018 |
| 12 | Eg Murservice AS | 933848418 | 6 | NOK 13.8 m | 2024 |
| 13 | Gt Mur & Flis AS | 914154677 | 5 | NOK 10.1 m | 2014 |
| 14 | Holth Bygg & Anlegg AS | 921533586 | 5 | NOK 5.9 m | 2018 |
| 15 | Østfold Uteanlegg AS | 922631107 | 5 | NOK 2.1 m | 2019 |
| 16 | Weberg Rekkverk AS | 931891707 | 5 | NOK 8.8 m | 2023 |
| 17 | Fredrikstad Betongentreprenør AS | 937546890 | 5 | – | 2026 |
| 18 | Sveising-Bygg AS | 818991592 | – | – | 2017 |
| 19 | Flexi Fug Drift AS | 828193082 | – | NOK 1.5 m | 2021 |
| 20 | Bekkevold Murerservice AS | 833080172 | – | NOK 853.5k | 2024 |
| 21 | Am Peis & Pipe AS | 834223252 | – | NOK 140.5k | 2024 |
| 22 | Østfold Arbeidspartner DA | 879306582 | – | – | 1997 |
| 23 | Ing. Ørnulf Olsen | 914486858 | – | – | – |
| 24 | Ak Flislegging AS | 914943418 | – | NOK 664.1k | 2015 |
| 25 | Nowakowski Michal | 915385273 | – | – | – |
Newest companies in other specialised construction activities in Fredrikstad
- Constructum Core AS10 Jul 2026
- Maksyuta Entreprenør29 Jun 2026
- Fredrikstad Betongentreprenør AS16 Apr 2026
- Sigurd Unnestad3 Mar 2026
- Henrik Stene29 Jan 2026
- Tom Willadsen Mur Og Flis ,snekkeri13 Jan 2026
- Skorsteinsmurer Hammer26 Aug 2025
- J S Lorentzen25 Aug 2025
- Markus Hansen AS11 Jul 2025
- Norgesbad AS21 Jun 2025
Frequently asked questions
How many companies in other specialised construction activities are there in Fredrikstad?
The Register of Legal Entities lists 78 active companies in other specialised construction activities in Fredrikstad. 6 of them were registered in the last 12 months.
Which is the largest company in other specialised construction activities in Fredrikstad?
Hammerstad Maskin AS is the largest by number of employees, with 72 employees. The organisation number is 980404730.
How many people work in other specialised construction activities in Fredrikstad?
The companies have 348 registered employees in total. The figures are based on employee counts in the Register of Legal Entities, and 17 of the 25 largest companies have reported employees.
How long have there been companies in other specialised construction activities in Fredrikstad?
The oldest active company, AS Diamantboring, was founded in 1975. 60% of the companies are limited companies.
Explore further
Other specialised construction activities in nearby municipalities
Other industries in the same group in Fredrikstad
Source: the Register of Legal Entities and the Register of Company Accounts. The overview shows active companies registered in the municipality with industry code 43.9. Figures are updated continuously.