Peter Onsager Steen

  • Ansatte
  • Senioradvokater

Peter Onsager Steen is a lawyer with broad experience in counseling and dispute resolution. He is specialized in insolvency and restructuring, and particularly with estate management in bankruptcy and forced dissolutions. In addition, he has good experience in company law, real estate, construction and employment law.
He regularly works with estate administration, debt settlement, company law, including shareholder agreements and disputes related to board responsibility. Furthermore, he has experience in disputes regarding defects in real estate, leases, consumer contracts and disputes in final settlements.
Peter has more than 15 years’ work experience, including five years from the Swedish Tax Agency. He is committed, works efficiently, and has the main focus on achieving a quick solution in his cases.

Legal areas
Labor law
Real estate and construction law
Bankruptcy and restructuring
Company law and contract law



  • 2023 - Present
  • Senior lawyer at Langseth Advokatfirma DA
  • 2016 - 2022
  • Lawyer at Langseth Advokatfirma DA
  • 2013 - 2016
  • Associate attorney at Langseth Advokatfirma DA
  • 2008 - 2013
  • Special consultant Oslo kemnerkontor


  • 2007
  • LLM Commercial Law
  • University of Southampton
  • 2007
  • Bachelor of Laws
  • Universitetet i Oslo