Industry code 43 · Vestfold
Specialised construction activities in Tønsberg
There are 530 active companies in specialised construction activities in Tønsberg. 49 of them were registered in the last 12 months. Together they have 1,904 registered employees. The largest company is Thermax AS with 128 employees. The oldest, Walther Karppinen & Sønn AS, was founded in 1966. 55% are limited companies.
- Active companies
- 530
- New in the last 12 months
- 49
- Registered employees
- 1,904
- Share of limited companies
- 55 %
The largest companies in specialised construction activities in Tønsberg
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 | Thermax AS | 984757514 | 128 | NOK 138.9 m | 2002 |
| 2 | Nli Elektrosystemer AS | 989042335 | 121 | NOK 321.7 m | 2005 |
| 3 | Gran Vvs AS | 985249962 | 108 | NOK 216.1 m | 2003 |
| 4 | Set Elektro AS | 987818549 | 102 | NOK 262.9 m | 2005 |
| 5 | Xpert Installasjon AS | 981574036 | 86 | NOK 187.1 m | 2000 |
| 6 | Kjell Foss Fjellsprengning AS | 968817329 | 82 | NOK 216.8 m | 1994 |
| 7 | Alt Installasjon AS | 979384378 | 67 | NOK 133.6 m | 1997 |
| 8 | Avarn Security Teknikk Sør AS | 979276141 | 62 | NOK 104.2 m | 1997 |
| 9 | Pec Elektro Tønsberg AS | 976027663 | 51 | NOK 71.6 m | 1995 |
| 10 | Oskar Og Tormod Wike AS | 930705462 | 42 | NOK 91.1 m | 1979 |
| 11 | Bluetec AS | 918024883 | 41 | NOK 77 m | 2016 |
| 12 | Itel AS | 923124837 | 41 | NOK 58.4 m | 2019 |
| 13 | Svenheim Monteringsservice AS | 926158317 | 40 | NOK 23.1 m | 2020 |
| 14 | Pet Installasjon AS | 932130394 | 36 | NOK 46.6 m | 1982 |
| 15 | Creonordic Prosjekt AS | 898467872 | 34 | NOK 96.5 m | 2012 |
| 16 | Frico AS | 970977457 | 32 | NOK 55.1 m | 1994 |
| 17 | Allsikring AS | 918969721 | 29 | NOK 56.4 m | 2017 |
| 18 | Moer Installasjon AS | 923156631 | 28 | NOK 33.8 m | 1979 |
| 19 | Tønsberg Blikk Og Montasje AS | 897986922 | 26 | NOK 58.2 m | 2012 |
| 20 | Walther Karppinen & Sønn AS | 913336429 | 26 | NOK 38.9 m | 1966 |
| 21 | Malerfirma Ronny Enger AS | 923586954 | 26 | – | 2019 |
| 22 | Veko AS | 985997349 | 25 | NOK 36.7 m | 2003 |
| 23 | John Fadum AS | 911557622 | 24 | NOK 31.7 m | 1971 |
| 24 | Abot AS | 915331262 | 21 | NOK 35.7 m | 2015 |
| 25 | Bjune Mur & Betong AS | 991058672 | 21 | NOK 30 m | 2007 |
Newest companies in specialised construction activities in Tønsberg
- Danielsen Hjelper31 Oct 2026
- Sulaiman Varme Teknikk26 Oct 2026
- Coates Elektromek AS16 Oct 2026
- Tht Håndverk AS8 Oct 2026
- Bergan Drift Og Anlegg AS23 Sept 2026
- Dawid Malerservice AS21 Sept 2026
- Ak Vei & Anlegg Knudsen20 Sept 2026
- Theodor Jahnsen AS18 Sept 2026
- Danneli Chverenec Byggtjenester12 Sept 2026
- Høglund Multiservice9 Sept 2026
Frequently asked questions
How many companies in specialised construction activities are there in Tønsberg?
The Register of Legal Entities lists 530 active companies in specialised construction activities in Tønsberg. 49 of them were registered in the last 12 months.
Which is the largest company in specialised construction activities in Tønsberg?
Thermax AS is the largest by number of employees, with 128 employees. The organisation number is 984757514.
How many people work in specialised construction activities in Tønsberg?
The companies have 1,904 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 in Tønsberg?
The oldest active company, Walther Karppinen & Sønn AS, was founded in 1966. 55% of the companies are limited companies.
Explore further
Specialised construction activities in nearby municipalities
Sub-industries in Tønsberg
- 43.1 Demolition and site preparation
- 43.2 Electrical, plumbing and other construction installation activities
- 43.3 Building completion and finishing
- 43.4 Specialised construction activities related to building construction
- 43.6 Intermediary services for specialised construction activities
- 43.9 Other specialised construction activities
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. Figures are updated continuously.