Senior Management


Nóirín McMahon BA FCA

Noirin is a Chartered Accountant with over 30 years' experience.

After qualification in practice in Dublin, Noirin worked for over 20 years with PricewaterhouseCoopers in Munich. During this time she advised clients on setting up and maintaining systems of internal controls, as well as on international accounting issues. She became a partner in 1997.

At WK Nowlan Noirin is responsible for financial accounting and for financial administration and taxation in the WK Nowlan Receivership Division. She is an Associate Director of the company.



Mark Johnston BSc MRICS, MSCSI

Mark is a Senior Chartered Surveyor with over 16 years’ experience in the residential and commercial real estate sectors.  As a Planning & Development Surveyor, he specialises in development site appraisals, project feasibility studies, design team procurement and management, public relations, stakeholder management, real estate acquisitions and disposals which includes ‘end to end’ real estate consolidation/expansion project management.

Mark has acted on behalf of a broad range of clients Including Religious Institutions, Charities, Corporate Bodies and private clients.  More recently Mark has worked with private clients undertaking investment acquisitions, the Redemptorists Order completing a multiphasic relocation project, St Vincent de Paul securing planning permission for a sheltered housing scheme and a number of high profile real estate disposals. 

He is an Associate Director of the company.



Toni McQuillan MRICS MSCSI  

Toni Mc Quillan is a Chartered Surveyor and member of SCSI and RICS. Specialising in real estate management she has over 25 years’ Asset and facilities management experience combining Retail, Office and Residential sectors.

In 1987 from a systems and accounting background she joined Superquinn Property Division where she remained for 14 years. Toni was responsible for the setting up of their Rent and Service Charge accounting system and a tailor made Property Information system.  Having qualified as a Surveyor she subsequently became involved in Leasing and Rent Reviews, Valuations, Dilapidations and day to day operational Management of the Superquinn Portfolio.

In 2001 she joined Spain Courtney Doyle as Joint head of Property Management responsible for financial and property management of client Retail, Office and mixed use portfolios.  She became a director of Active Property Management in 2008.

 Toni joined WK Nowlan in September 2014 as Head of Real Estate Management.