Industry code 43.1 · Telemark
Demolition and site preparation in Porsgrunn
There are 46 active companies in demolition and site preparation in Porsgrunn. 6 of them were registered in the last 12 months. Together they have 98 registered employees. The largest company is Eckholdt AS with 39 employees. The oldest, Ole Jonny Madsen Maskinentreprenør AS, was founded in 1976. 48% are limited companies.
- Active companies
- 46
- New in the last 12 months
- 6
- Registered employees
- 98
- Share of limited companies
- 48 %
The largest companies in demolition and site preparation in Porsgrunn
Sorted by number of employees. Figures are from the Register of Legal Entities and the Register of Company Accounts.
Newest companies in demolition and site preparation in Porsgrunn
- Atle Simonsen AS Tvangsavviklingsbo15 Oct 2026
- Sortedal Bygg Og Anlegg20 Mar 2026
- Servicepartner O. Knutsen6 Mar 2026
- Kemaro AS6 Mar 2026
- Axero AS19 Jan 2026
- Staakkan Betong Og Asfalttjenester4 Dec 2025
- K/A Entreprenør AS18 Mar 2025
- Porsgrunn Kjerneboring AS5 Sept 2024
- M3 Maskin AS13 May 2024
- Skrettingland Fjell Og Anlegg18 Dec 2023
Frequently asked questions
How many companies in demolition and site preparation are there in Porsgrunn?
The Register of Legal Entities lists 46 active companies in demolition and site preparation in Porsgrunn. 6 of them were registered in the last 12 months.
Which is the largest company in demolition and site preparation in Porsgrunn?
Eckholdt AS is the largest by number of employees, with 39 employees. The organisation number is 948191660.
How many people work in demolition and site preparation in Porsgrunn?
The companies have 98 registered employees in total. The figures are based on employee counts in the Register of Legal Entities, and 5 of the 25 largest companies have reported employees.
How long have there been companies in demolition and site preparation in Porsgrunn?
The oldest active company, Ole Jonny Madsen Maskinentreprenør AS, was founded in 1976. 48% of the companies are limited companies.
Explore further
Demolition and site preparation in nearby municipalities
Other industries in the same group 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 43.1. Figures are updated continuously.

