About TJ O'Mahony


The O'Mahony family have, for decades, been a widely-recognised supplier to trade, self-builder and DIY customer for the supply of quality timber and building materials. We continue to be respected as a major supplier to builders, contractors, subcontractors, and end-users (DIY), with delivery-to-site guaranteed from our prime location in south-west Dublin.

TJ O'Mahony's business of servicing the building trade and the home DIY improver has a tradition second-to-none in Dublin for value and quality service. That tradition is an inherent element in our relationship with our clientele today, bringing valued advice and expert knowledge to all aspects of building and renovation from laying floors to roof manufacture - and all else in between.

Today TJ O'Mahonys Ballymount and Kilshane are part of the Moritz Group, a company with a long history in the Irish construction industry and investor in other leading building trade supply companies such as PH Ross, Common’s Hardware, C+D Providers, C+D Home & Hardware,  & Arklow Building Supplies.

In September 2008 a new Branch of TJ O’Mahony’s was opened in Kilshane Cross, Finglas, and this Branch will enable us to better service existing customers on the North side of Dublin and also allow us to grow potentially new business in Northside. Both our Home, Garden and DIY stores are open to both Trade Customers and the general Public - so now everyone can benefit from our experienced advice and our fantastic low prices from construction right down to that finishing home decor touch.

Why not visit our new Showrooms at Ballymount Cross and Kilshane Cross and see for yourself why TJ O'Mahony's is one of the foremost stockist of a comprehensive range of building supplies, home DIY, Kitchens, paints, timber decking, doors & floors, tools and power tools, bathrooms, and plumbing and heating materials. With a tradition for personal service and value and discover why innovation has always been a watchword in this trusted family-based business.

Read our Environmental Policy here.