MJ Duncan and Sons Limited was established in 1998 by Michael and Rachel Duncan. We have successfully created a reputation in high end finishes and we are lucky to be involved in some of the most elaborate projects in the commercial, residential and conservation sectors.


As each residence is built or renovated with its own individual character in mind, the bespoke requirements of each client must be met whilst still offering value, engineering and innovation to facilitate the best delivery of the project in terms of both cost and quality.

It is an expression of who you are, new build or renovation, we will work with you from start to finish to create an exceptional, highly individual home you will be proud of and enjoy.

MJ Duncan and Sons have worked extensively across the high end residential sector with projects in private residences all over Dublin and the surrounding counties of Leinster.


As heritage contractors we go to great lengths to restore protected buildings to their former glory. We provide best practice for conservations and restoration whilst also recognising and promoting the heritage sector. We are also proud members of The Irish Georgian Society and members of the CIF heritage contracting division.


We have extensive experience from working with a multitude of different commercial clients each with unique and specific demands.

When working with commercial clients, we are aware of the tight deadlines and cost implications and we are able to incorporate these requirements through careful planning and programming without compromising on quality.

The breadth of commercial experience within MJ Duncan and Sons enables us to develop productive relationships with our customers.

About MJ Duncan & Sons

The expertise within our group enables us to deliver the highest quality product. Working with initial design concept through to final completion, we are able to maximise value and innovative internal and external architecture, high quality interior design, and high tech lighting and visual systems. This collaborative approach across our company provides a solid foundation for continued growth in all sectors.

The construction industry today is a dynamic, ever changing work environment. We are committed to protecting the safety, health and welfare of our employees and supply chain. We do this by providing a safe working environment, with training and upskilling continuously.

Our wide network of construction industry experts, depth of knowledge and experience, and exceptional customer service gives our clients peace of mind and reassurance that their interests will be managed thoroughly and resourcefully.