Mag Thomas Hamerl > CMS Reich-Rohrwig Hainz Rechtsanwälte GmbH > Vienna, Austria > Lawyer Profile

CMS Reich-Rohrwig Hainz Rechtsanwälte GmbH
1010 WIEN

Work Department

Public Procurement, Insfrastructure & Projects, Real Estate & Construction


Thomas Hamerl is an attorney-at-law for infrastructure projects & public private partnerships and a leading expert in public procurement law as well as real estate & construction. He is a specialist for national and international construction projects, infrastructure and public private partnerships as well as energy projects. He has particular expertise in national and international construction contract law, public procurement law including concessions, infrastructure-oriented dispute resolution including litigation and arbitration, real estate and energy law.

He represents his clients before national and international courts and arbitral tribunals. He regularly publishes in legal magazines in his specialist areas of public procurement and construction contracts. He is publisher and contributing editor of a handbook on international construction contracts and contributed the Austria chapter to the PPP book “Getting the Deal Through”.

He has been a legal advisor for approximately 20 years and has been with CMS since 2009. He can draw on his experience as an in-house lawyer, as head of the legal department in Vienna and head of the group-wide “Legal Practice PPP Group” during his time with a major construction company. Before that he was active in Austria and the CEE states for renowned Viennese law firms and for the European Commission in Brussels.


European Commission (1997-1998), two highly recommended Austrian Law firms (1998 – 2008), STRABAG (2008 – 2009), CMS Reich-Rohrwig Hainz since 2009.


English, German


Viennese Bar Association; ÖGEBAU (Austrian Society for Construction Law); ArbAut (Austrian Arbitration Association); Management Club; Club Cuvée;


University of Vienna School of Law (Mag.iur. 1995).

Lawyer Rankings

Austria > Public procurement

CMS Reich-Rohrwig Hainz Rechtsanwälte GmbH assists public and private entities throughout the full life cycle of public procurement up to related litigation. The group is also particularly adept at handling PPPs in infrastructure and healthcare industries and also handles cross-border projects and tender procedures. Bernt Elsner and his team deploy a procurement portal for clients to carry out tendering processes electronically, an initiative that has come in particularly handy during Covid-19. Elsner often advises contracting authorities and also has experience of compliance issues. Robert Keisler adds competition law expertise to the team and Thomas Hamerl is a key name for energy projects.

Austria > Projects and energy

At CMS Reich-Rohrwig Hainz Rechtsanwälte GmbH, the infrastructure and projects group frequently works with the firm’s energy and climate change department to advise on public procurement, energy, real estate and construction. Clients include construction companies and developers, institutional investors and energy companies. Johannes Trenkwalder concentrates on renewable energy and energy efficiency, Bernt Elsner handles procurement and public-private partnerships, Thomas Hamerl specialises in infrastructure projects and Nikolaus Weselik handles property and construction law matters.