With an established presence in the market, the real estate and construction team at Lex Law Offices provides key advice to its clients, who include major real estate companies and local municipalities. The team is led by Óskar Sigurðsson, who provides litigation expertise with particular skill in property disputes, and Arnar Þór Stefánsson, who brings recognised experience in planning and administrative law. Guðjón Ármannsson is another key name in the team and has recently focused his practice on work for municipalities. Hjalti Geir Erlendsson provides regular support, particularly in dispute resolution.
Legal 500 Editorial commentary

Accolades

Client satisfaction: Billing & efficiency
Client satisfaction: Sector knowledge

Testimonials

Collated independently by Legal 500 research team.

  • ‘Lex is brilliant because it combines unmatched dispute resolution expertise in Iceland with strategic creativity, responsiveness, and client-focused innovation — offering the depth of a leading full-service firm with the agility and personal attention clients value most.’
  • ‘The individuals we work with at Lex truly stand out for their deep knowledge of Icelandic law and their ability to translate that expertise into clear, practical guidance. They are not only highly knowledgeable but also strategic, approachable, and consistently responsive — qualities that make them invaluable partners in resolving complex disputes.’
  • ‘The Lex team is highly professional, hard-working, and demonstrates excellent work ethics. They proactively notify us about upcoming changes in the real estate and construction fields. Their responses are consistently fast, and they ensure smooth communication and strong connections with Icelandic Authorities on our behalf.’
  • ‘Óskar Sigurðsson distinguishes himself with his outstanding expertise in real estate and construction law. He combines a profound understanding of complex regulatory frameworks with a practical, solution-oriented approach that truly sets him apart from competitors. His advocacy skills are par excellence — persuasive, precise, and highly effective — which gives us great confidence in contentious matters. Óskar’s ability to anticipate potential challenges and navigate them effectively has provided us with a sense of security in large and demanding projects. His commercial awareness and negotiation skills make him a trusted advisor in both high-stakes transactions and day-to-day matters.’

Key clients

  • Heimar hf.
  • Landsvirkjun sf.
  • Kópavogur municipality
  • Grímsnes- og Grafningshreppur municipality
  • Cargow Thorship / Tor Cargo
  • Mosfellsbær municipality
  • Hveragerðisbær municipality
  • Hótel Geysir ehf.
  • Árkór ehf.
  • EFLA hf.
  • Nýr landspítali ohf.
  • Árborg municipality

Work highlights

Acted as lead counsel to Heimar hf. on its ISK 13,850,000,000 acquisition of all shares in Gróska ehf. and Gróðurhúsið ehf.
Represented Kópavogur municipality in a case centred on the expropriation of land at Vatnsendi, leading to the acquittal of Kópavogur municipality.
Acted as legal counsel to Samherji hf. on the financing of the first and second phases of the construction of Salmon Garden.

Lawyers

Leading partners

The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Leading associates

Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.

Practice head

Óskar Sigurðsson; Arnar Þór Stefánsson

Other key lawyers

Guðjón Ármannsson; Hjalti Geir Erlendsson