Industry code 71 · Telemark
Architectural and engineering activities; technical testing and analysis in Porsgrunn
There are 223 active companies in architectural and engineering activities; technical testing and analysis in Porsgrunn. 17 of them were registered in the last 12 months. Together they have 336 registered employees. The largest company is Inflowcontrol AS with 59 employees. The oldest, Børve Borchsenius Arkitekter AS, was founded in 1978. 54% are limited companies.
- Active companies
- 223
- New in the last 12 months
- 17
- Registered employees
- 336
- Share of limited companies
- 54 %
The largest companies in architectural and engineering activities; technical testing and analysis in Porsgrunn
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 | Inflowcontrol AS | 996957691 | 59 | NOK 501.1 m | 2011 |
| 2 | Brevik Engineering AS | 911811251 | 33 | NOK 79.9 m | 2013 |
| 3 | Brakon AS | 970918701 | 26 | NOK 34.7 m | 1994 |
| 4 | Børve Borchsenius Arkitekter AS | 910980246 | 24 | NOK 36.2 m | 1978 |
| 5 | Tsg Holdco AS | 993034169 | 23 | NOK 57.8 m | 2008 |
| 6 | Servie AS | 861824152 | 20 | NOK 77 m | 1991 |
| 7 | Strukturas AS | 963175094 | 20 | NOK 87.8 m | 1991 |
| 8 | Safelink AS | 997805054 | 15 | NOK 76.6 m | 2012 |
| 9 | Real Byggteknikk AS | 929474929 | 14 | NOK 22.7 m | 2022 |
| 10 | Feste Landskap Arkitektur Sør AS | 960910680 | 11 | NOK 19.8 m | 1991 |
| 11 | Stressman Engineering AS | 996293955 | 11 | NOK 36.2 m | 2010 |
| 12 | Ranold AS | 985987483 | 9 | NOK 27.1 m | 2003 |
| 13 | Stauper Water Technologies AS | 813164132 | 7 | NOK 21.5 m | 2014 |
| 14 | Scandinavian Certification AS | 913938003 | 7 | NOK 19.4 m | 2014 |
| 15 | Med Byggmester AS | 932953226 | 7 | NOK 5.2 m | 2024 |
| 16 | Kmh Elektro AS | 989976044 | 7 | NOK 9.5 m | 2006 |
| 17 | Maxbo Tekniske Tjenester AS | 924463163 | 6 | NOK 9 m | 2019 |
| 18 | Rose Forvaltning AS | 990735743 | 6 | NOK 10.7 m | 2006 |
| 19 | Purenviro AS | 995633000 | 6 | NOK 61.3 m | 2010 |
| 20 | Orderx AS | 916690479 | 5 | NOK 13 m | 2016 |
| 21 | Trosvik Group AS | 924033185 | 5 | NOK 157.5 m | 2019 |
| 22 | Skagerak Utvikling AS | 931066013 | 5 | NOK 3.6 m | 2023 |
| 23 | Skagerak Mobil Energi AS | 933762483 | 5 | NOK 8.5 m | 2024 |
| 24 | Ppm Prosjekt Porsgrunn AS | 935241162 | 5 | NOK 604.9k | 2025 |
| 25 | Hobtech AS | 811650072 | – | NOK 1.9 m | 2013 |
Newest companies in architectural and engineering activities; technical testing and analysis in Porsgrunn
- Mælandsmo Marine & Offshore Consultants30 Sept 2026
- Karlsson Prosjekt Og Rådgivning30 Sept 2026
- Heiland Site Engineering AS10 Sept 2026
- Ghorab Consulting7 Jul 2026
- Jørgen Young4 Jun 2026
- Elektro Montasje Milanovic8 May 2026
- Nomos AS7 May 2026
- Amrani Engineering & Project Management AS5 May 2026
- Driftsfokus AS21 Apr 2026
- Markset Norse Armour3 Apr 2026
Frequently asked questions
How many companies in architectural and engineering activities; technical testing and analysis are there in Porsgrunn?
The Register of Legal Entities lists 223 active companies in architectural and engineering activities; technical testing and analysis in Porsgrunn. 17 of them were registered in the last 12 months.
Which is the largest company in architectural and engineering activities; technical testing and analysis in Porsgrunn?
Inflowcontrol AS is the largest by number of employees, with 59 employees. The organisation number is 996957691.
How many people work in architectural and engineering activities; technical testing and analysis in Porsgrunn?
The companies have 336 registered employees in total. The figures are based on employee counts in the Register of Legal Entities, and 24 of the 25 largest companies have reported employees.
How long have there been companies in architectural and engineering activities; technical testing and analysis in Porsgrunn?
The oldest active company, Børve Borchsenius Arkitekter AS, was founded in 1978. 54% of the companies are limited companies.
Explore further
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Sub-industries in Porsgrunn
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. Figures are updated continuously.