Industry code 43.221 · Oslo
Plumbing installation in Oslo
There are 534 active companies in plumbing installation in Oslo. 46 of them were registered in the last 12 months. Together they have 2,689 registered employees. The largest company is Assemblin AS with 670 employees. The oldest, AS Rørlegger, was founded in 1925. 75% are limited companies.
- Active companies
- 534
- New in the last 12 months
- 46
- Registered employees
- 2,689
- Share of limited companies
- 75 %
The largest companies in plumbing installation 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 | Assemblin AS | 965808752 | 670 | NOK 1.7 bn | 1992 |
| 2 | Rør System AS | 996754316 | 134 | NOK 117.9 m | 2011 |
| 3 | Brattås AS | 980334511 | 90 | NOK 142 m | 1998 |
| 4 | Christiania Rørleggerbedrift AS | 912069370 | 88 | NOK 169.3 m | 2013 |
| 5 | Vvs Kontakten AS | 922531897 | 85 | NOK 158.1 m | 2019 |
| 6 | Oslo-Akershus Rørleggerbedrift AS | 994920790 | 70 | NOK 159.5 m | 2009 |
| 7 | Andenæs Vvs AS | 963031130 | 67 | NOK 137.6 m | 1991 |
| 8 | Østlandske Vvs AS | 984235763 | 62 | NOK 89.8 m | 2002 |
| 9 | C M Mathiesen & Co AS | 960007247 | 50 | NOK 47.8 m | 1991 |
| 10 | Eriksen & Jensen AS | 940266009 | 46 | NOK 61.3 m | 1986 |
| 11 | Oslo Vvs Service AS | 957810950 | 45 | NOK 113.7 m | 1990 |
| 12 | Voler AS | 926113682 | 43 | NOK 61.7 m | 2020 |
| 13 | Total Vvs AS | 997275160 | 43 | – | 2011 |
| 14 | Trygg Vvs AS | 998380448 | 38 | NOK 90.7 m | 2012 |
| 15 | Ringside AS | 915407692 | 37 | NOK 82 m | 1970 |
| 16 | Bjerke Rør AS | 918082476 | 33 | NOK 75.3 m | 2016 |
| 17 | Rørleggerhuset AS | 819595712 | 32 | NOK 66.8 m | 2017 |
| 18 | Boligrørleggeren AS | 997924460 | 32 | NOK 26.8 m | 2012 |
| 19 | Vvs Gruppen AS | 982677416 | 29 | NOK 59 m | 2000 |
| 20 | Tore Orvei AS Rørleggerbedrift | 942194498 | 28 | NOK 48.5 m | 1987 |
| 21 | Entas AS | 988121053 | 27 | NOK 30.1 m | 2005 |
| 22 | Rørpartner Varme & Sanitær AS | 934961722 | 25 | NOK 65.1 m | 2025 |
| 23 | Vinderen Rør AS | 995123126 | 25 | NOK 39.9 m | 2010 |
| 24 | Nezir Isolering Og Ventilasjon AS | 990026572 | 24 | NOK 27.4 m | 2006 |
| 25 | Alfa Olis Gass & Vvs AS | 885415962 | 23 | NOK 51 m | 2003 |
Newest companies in plumbing installation in Oslo
- Rørværk AS4 Nov 2026
- Kinunda Vvs15 Oct 2026
- Rør System Ii AS2 Oct 2026
- Gamle Oslo Vvs AS30 Sept 2026
- Rørklar Varberg14 Sept 2026
- Abdo Rørservice4 Sept 2026
- Postmaker AS1 Sept 2026
- Bw Vvs & Bygg AS26 Aug 2026
- Solid Rørservice AS14 Aug 2026
- Øverjordet Vvs AS28 Jul 2026
Frequently asked questions
How many companies in plumbing installation are there in Oslo?
The Register of Legal Entities lists 534 active companies in plumbing installation in Oslo. 46 of them were registered in the last 12 months.
Which is the largest company in plumbing installation in Oslo?
Assemblin AS is the largest by number of employees, with 670 employees. The organisation number is 965808752.
How many people work in plumbing installation in Oslo?
The companies have 2,689 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 plumbing installation in Oslo?
The oldest active company, AS Rørlegger, was founded in 1925. 75% of the companies are limited companies.
Source: the Register of Legal Entities and the Register of Company Accounts. The overview shows active companies registered in the municipality with industry code 43.221. Figures are updated continuously.