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Catherine Guy

Catherine Guy

Partner cguy@byrnewallace.com +353 1 691 5678 +353 1 691 5010
  • Exeter Ireland Property III Limited

    ByrneWallace advised Exeter Ireland Property III Limited, part of the Exeter Property Group....

  • Bray Town Center

    On-going advice on what will be Ireland’s largest ever urban development project consisting of retail, commerci...

  • Tommy Hilfiger

    Negotiated on behalf of Tommy Hilfiger Europe the acquisition of a leasehold interest on Grafton Street, Dublin 2...

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Catherine Guy is a partner in ByrneWallace. She was Managing Partner of the firm from June 2012 - June 2018 with overall responsibility for client relationships, the management and direction of strategy, finance, corporate governance, business planning and development, stakeholder engagement and overall responsibility for the operational functions of the firm.

Catherine led the development of the ByrneWallace Client Relationship Programme and has extensive experience in the management of large groups of stakeholders, the roll-out of large projects, change management, political factors and issues relating to structures and governance with which she is involved as Client Relationship Partner.

Catherine is a commercial real estate development specialist. She previously headed up the ByrneWallace Property Department and has a strong track record in large scale commercial development projects. Catherine works with a wide range of clients advising on all aspects of property acquisition and development including support on commercial negotiation, pre-contract due diligence, contract negotiation and drafting, structuring and project funding. 

Catherine has strong management and communications skills. She holds a Diploma in Company Direction from the Institute of Directors. She is recognised in Chambers and Partners as “proactive in suggesting solutions”, is praised for her “strong negotiation skills” and is ranked as an Eminent Practitioner. 


  • Diploma in Company Direction, Institute of Directors, 2015
  • Qualified as a Solicitor, Law Society of Ireland, 1991
  • Bachelor of Civil Law (BCL), University College Dublin, 1987


  • Childrens Hospital Group Board
  • ByrneWallace Management Committee
  • Dublin Solicitors Bar Association
  • Irish Centre for European Law
  • Law Society of Ireland
  • Institute of Directors, Ireland 


Catherine Guy is proactive in suggesting solutions" and praised for her "strong negotiation skills." - Chambers Europe, 2018

Catherine Guy is ranked as an Eminent Practitioner by Chambers Europe, 2018

Catherine Guy represents clients from the retail sector in real estate mandates. Clients report that Guy is "very focused and very efficient." She also acts as the firm's managing partner. - Chambers Europe, 2017

Catherine Guy is ranked as an Eminent Practitioner by Chambers Europe, 2017

Catherine Guy is considered "an exemplary lawyer" by interviewees. She has in-depth knowledge of the full range of real estate issues, covering retail developments, residential projects and office buildings, alongside her duties as managing partner. - Chambers & Partners, 2016

According to sources, Catherine Guy is a "clear thinker, with the experience to know when something is material or not. She is capable, smart and hard working." Guy acts on numerous real estate transactions, investments and developments, alongside her duties as managing partner. - Chambers & Partners, 2015

Managing partner Catherine Guy is widely respected for her experience and client-driven approach. Clients enthuse: "She has sound commercial judgement and provides an excellent level of service; overall she is proactive and extremely personable." - Chambers & Partners, 2014