What makes us different to the rest?

TC Estimating Services Ltd has been providing cost, contract and consultancy solutions to organizations and individuals across Ireland for over 30 years. Originally founded in 1981 with the leadership of the Managing Partners, Tony and Aonghus Callanan, the practice has become one of the most vibrant consultancy practices in Ireland providing the full spectrum of Quantity Surveying, Construction Cost Management and Project Management services.

By balancing time, cost and quality, we’re able to use the latest methodologies to analyze cost, risk and results whilst ensuring sustainable and attainable outcomes for every project and client.

By providing a range of industry advice and services, we help to reduce risk and deliver stakeholder value throughout the construction lifecycle. The type value and location of our work is varied and the practice has been involved in projects in virtually every sector of the construction industry, including retail, educational, pharmaceutical, industrial, commercial, healthcare, residential and civil engineering projects with value of up to €150 million.

What makes us different is our level of expertise in the construction sector, our technological systems along with a hands on services. Trust and integrity is at the heart of everything we do to deliver;

  • Value for money
  • Cost certainty
  • On time delivery
  • End User Satisfaction.

Aonghus Callanan


Aonghus is a Chartered Quantity Surveyor with a vast range of experience in both Ireland and Australia. Having been involved in the practice since a placement year in university he has shown a dedication to hard work and an eye for detail. He has specific expertise in the pre and post contract building and civil sectors with professional hands on approach together with technical know-how.  

Technologically advanced in his approach he has been involved in the accurate measurement, costing, management, contract administration & dispute resolution of projects he has delivered additional value to construction projects of up to $1.3 billion. 

Using an enthusiastic approach as project leader on a wide variety of construction projects with responsibility for carrying out the quantity surveying, procurement, commercial management and cost control duties Aonghus can add value to a project and deliver a successful outcome for a client and or a contractor.

Tony Callanan


With over 35 years experience in the Industry Tony is one of the most knowledgeable Quantity Surveyors in the West of Ireland. Having worked in the TC Estimating practice as well as in a leading loss assessing practice during this time there is virtually no building or civil construction project or scenario he does not have firsthand experience of. He is highly experienced in contracting and consulting and brings a wealth of on-site experience in construction techniques. With this very high technical construction knowhow ensures that the level of risk a client is asked to absorb mitigated drastically.

Tony has been involved in the delivery of all facets of Quantity Surveying on projects from building to civil and services/utilities ranging from the small to multi million euro projects throughout all of Ireland. He adds value to a broad range of projects, including the provision of services such as client representative, cost and contract management, project procurement, feasibility studies, cost planning, cost auditing, project management, risk assessment, tender documentation and review, negotiation,  insurance valuations, claims review and expert witness consultancy.