Per Aarsleff is a Danish construction and civil-engineering group founded in 1947 and headquartered in Viby J, south of Aarhus, working in construction, pipe technologies and ground engineering; its parent, Per Aarsleff Holding A/S, is listed on Nasdaq Copenhagen. The operating company Per Aarsleff A/S has kept a registered branch in Porto since 2009 (Per Aarsleff A/S – Sucursal em Portugal, NIF 980418747), classified under the construction of water, sewer and other pipeline networks.
Per Aarsleff founded the company in 1947, buying an excavator and opening a lignite pit at Fasterholt, south-east of Herning; he stayed active in the business until a few years before his death in 2006. The group is headquartered at Hasselager Allé 5 in Viby J, south of Aarhus, and is organised in three business areas — Construction, Pipe Technologies and Ground Engineering. Its parent, Per Aarsleff Holding A/S (CVR 24257797), is listed on Nasdaq Copenhagen, and the main operating company, Per Aarsleff A/S (CVR 37542784, registered on 16 March 2016), reports 2,957 employees in the Danish business register. The group’s reference list includes the Great Belt and Øresund fixed links, the Horns Rev 2 and Rødsand offshore wind farms and Malmö’s City Tunnel, and Aarsleff describes itself as among the world’s leading installers of offshore-wind foundations. In the first nine months of its 2025/26 financial year, October 2025 to June 2026, revenue rose 14.4% to DKK 18,907 million, with EBIT of DKK 842 million.
In Portugal, Per Aarsleff A/S is registered as a permanent representation, Per Aarsleff A/S – Sucursal em Portugal (NIF 980418747), with offices at Avenida da Boavista 2881 in Porto. Its registered object is contracting for civil construction and public works, with industry, trade and investment as ancillary activities, and its activity code is CAE 42210, the construction of networks for water, sewage and other fluids. The branch’s balance sheets are on file for every year from 2009 to 2024, and it filed its latest individual accounts in April 2026, so it remains an active, reporting entity. NorthSouth HQ has not been able to identify the branch’s Portuguese projects: a search of the EU’s Tenders Electronic Daily returned no Portuguese contract-award notices naming Aarsleff.
The Porto branch is a long-running Danish foothold in Portuguese construction: a permanent representation, registered for pipe-network works, that has reported every year since 2009. It gives one of Denmark’s largest contractors a ready legal base for Portuguese work in the fields where it is strongest at home, from pipe networks to foundations — and a reference point for Portuguese engineering firms looking to partner with a Nordic contractor already registered in Porto.
On 17 July 2026 Per Aarsleff A/S won Energinet’s design-and-build contract for the land facilities of Bornholm Energy Island. On 26 August 2026 the group reported nine-month revenue of DKK 18,907 million, up 14.4%, and on 29 September 2026 its technical contractor Wicotec Kirkebjerg agreed to acquire Rent-Tech A/S. The Portuguese branch filed its individual accounts in April 2026.
Sources: Danish CVR register via cvrapi.dk; nif.pt and racius.com (Portuguese branch); aarsleff.com news and company announcements; Wikipedia (English and Danish); EU Tenders Electronic Daily search. Spotted an error? Email miguel@fractio.se.
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