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About Us

McDonnell Consulting Ltd is a Chartered Quantity Surveying and Construction Cost Consultancy led by Sean McDonnell MRICS.

Sean has over fifteen years’ experience in the construction industry, having worked in private practice and with a large global multi-disciplinary project management and professional services company. The strong technical skills nurtured over many years in the industry, coupled with the leadership skills developed within a large global business structure, provide the nucleus around which Sean formed McDonnell Consulting Ltd in 2016.

Sean has managed construction costs on many iconic and prestigious projects during his career to date. He has gained considerable expertise in the successful delivery of a wide ranging portfolio of projects from inception to completion, in many sectors including healthcare, residential, commercial, industrial, public realm and large mixed use developments, managing costs on projects of capital values ranging from £100k to £70m. Sean is both a team player, and a team leader, who integrates well with fellow professionals and project stakeholders to ensure the objectives of clients are delivered effectively.

The primary aim of McDonnell Consulting Ltd is to deliver high quality services to respected and valued clients, through innovative approaches without losing sight of the core principles of construction cost management. Sean is keen to be at the forefront of service delivery, liaising with clients on a day to day basis, building on relationships already established, and developing positive and mutually beneficial relationships with new clients and industry professionals.

McDonnell Consulting Ltd is a firm regulated by the Royal Institution of Chartered Surveyors (RICS). This regulatory model holds the profession to the globally recognised standards of RICS and is seen as being vital in inspiring confidence among clients and the public. McDonnell Consulting Ltd is also a verified member of Constructionline, the UK’s leading procurement and supply chain management service, thus providing recognition that we align to the required levels of industry and government standards.


Sean McDonnell MRICS.

"At McDonnell Consulting we are enthusiastic about successfully delivering your project.  We work with you from inception to beyond completion, providing a proactive approach that is focused on cost certainty and value for money."

Professional. Innovative. Personal.

Core Services

Our core services are tailored to reflect the evolution of your project.  As the cost managers of the construction industry, we guide you through the complex process with a level of assurance that comes with expertise and trusted professionalism.  We understand all aspects of construction, and have a unique ability to manage costs effectively, considering quality, value and exposure to risk in the context of the needs of each individual client. 

Strategic Definition & Brief

We support you in defining the scope of your project.

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Value Management

If you don’t need it, why pay for it.

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Cost Planning

Our cost plans provide the control mechanism as design evolves.

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We provide considered advice and assured recommendations.

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Contract Strategy

We strategise and allocate the risks accordingly.

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Tender Action

Our focus is on accuracy and efficiency during this exciting stage.

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We believe proactive management is key to successful delivery.

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We stay committed as our support continues post occupation.

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Specialist Services

Our specialist expertise allows us to provide bespoke solutions for clients who have specific requirements.  We utilise our unique blend of construction industry experience, commercial awareness and attention to detail to provide the safe pair of hands that many challenging situations need to reach fruition.  The services described below are an example of our specialist offering.

Project Monitoring

You can be assured of our attention to detail.

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Project Recovery

Our industry expertise can help facilitate solutions.

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Forensic Quantity Surveying

We can establish entitlement through our robust analysis.

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Project Management

We’re team leaders who have the skills to manage.

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Our clients...

Below is a selection of clients that we are currently working with.  We are committed to nurturing mutually beneficial working relationships with all our clients, and pride ourselves on the high level of repeat business that we secure.

Deramore Developments Ltd.

Alterity Investments

C-Tec NI Ltd.

Re-Gen Waste Ltd.

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