We’re M&J Cosgrove Construction Ltd, and we’re one of South Wales’ leading construction contractors.

We’ve been at the forefront of quality construction for 50 years, with all the experience, knowledge and skills you’ll need to deliver your building, refurbishment or development project.

We deliver the highest standards of quality, value, customer service and safety, with a wealth of experience across South Wales and beyond. Our portfolio includes Commercial, Domestic, Local Authority, Health Authority and Retail construction and development projects.

Our approach is collaborative and friendly - we’re valued partners to our clients, offering tailored solutions from refurbishments to all-inclusive package deals. We’re experts in conservation work, and our knowledge and experience of site development in South Wales is unsurpassed.

Take a look around our site to find out more. Or get in touch, we’d love to hear from you.

Cosgrove UPDATEFollow the progress of live projects.

If you’d like to find out more about what we do, why not take a look at some of our current projects? We’ve showcased a few examples of the development and refurbishment ventures we’re working on right now, for commercial, domestic, local authority, health authority and retail clients.

Personal Service.

In our experience, one size rarely fits all. That’s why we offer a personal, collaborative approach to your project, no matter how big or small.

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Our Heritage.

We’re proud to be a family construction business - we’ve been working with clients across South Wales and beyond for 50 years.

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Complete Solutions.

Looking for a team who can get involved from the very start, offering advice and services like land finding, design and planning? You’ve come to the right place.

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