Castle Construction & Groundworks Ltd are experienced specialists in construction and groundworks, providing a comprehensive range of services for residential and commercial projects across Kidwelly, Carmarthen, and wider Wales.
Based in Carmarthenshire, we are ideally positioned to support projects throughout the region. As an independent, family-run business, we pride ourselves on delivering a personal, tailored service, with close attention to detail and clear communication from start to finish.
Whether you require groundworks, building services, drainage solutions, roofing, or specialist construction support, our skilled team is here to help. Get in touch today to discuss your project and receive expert advice.
Each service is fully insured and carried out using quality materials and proven methods.
We are proud to be local Welsh builders with over 30 years of combined experience, delivering reliable construction and groundwork services throughout Carmarthenshire and beyond.
Our team understands the character of local homes, land and commercial sites. Whether you’re planning a new build, renovation, extension or groundwork project, we bring expert craftsmanship and a personal approach to every job.
We are fully qualified and insured, work efficiently to agreed timescales, and keep you informed at every stage. From traditional stonework to modern construction techniques, all work is tailored to suit your property and requirements.
Sustainability is also important to us, and where possible we use eco-conscious methods and materials to reduce environmental impact.
We deliver a complete construction solution, managing projects from initial groundwork through to finished builds.
Groundwork & Foundations – Excavation, site clearance, underpinning, and raft foundations.
Construction & Structural Work – New builds, roofing, retaining walls, and timber frame installation.
Specialist Services – Diamond drilling, steel fabrications, pile driving, and percolation testing.
Drainage Solutions – Soakaways, sustainable drainage systems and general drainage works
Martin Evans and Castle Construction have worked with Grade Consulting Ltd on multiple structural engineering projects as an associate building contractor. His work is consistently of a high standard, demonstrating excellent craftsmanship, attention to detail, and a strong understanding of both modern and traditional construction methods. He communicates effectively with clients, engineers, and other trades, ensuring projects run smoothly and are completed to specification. Martin is reliable, punctual, and committed to delivering quality results while maintaining safe working practices.
If you’re planning a construction or groundwork project, speak to our team for expert guidance and a free, no-obligation estimate. We operate across Wales, including Kidwelly, Carmarthen, Pembrokeshire and surrounding areas.
Excellent company. Both professional and friendly. All work carried out had been done to a very high standard at a very good price. I would highly recommend their services and I will continue to use them for any alterations inside and outside of my home.
We’re delighted with the work carried out by Castle Construction at our property which included drainage work, laying a large concrete slab & creating an en suite. Work was completed quickly to a good standard & at very reasonable cost by great guys who were always helpful and a pleasure to have around. We can recommend them wholeheartedly.
I hired Castle Construction to carry out Landscaping and Construction work to my front garden.
The work was completed to a very high standard and Martin and his employees were very professional throughout the work. I can definitely recommend them to anybody looking any building work in the future.
We provide a full range of construction and groundwork services, including groundworks, building work, drainage and soakaways, roofing, timber frame buildings, digger hire, and specialist construction services for residential and commercial projects.
We are based in Kidwelly and regularly work across Carmarthen, Pembrokeshire and the wider Wales region. If you are unsure whether we cover your area, please contact us and our team will be happy to advise.
Yes. We work with homeowners, developers and commercial clients on projects of all sizes, from small domestic works to large-scale construction and groundwork projects.
Yes. Our team is fully qualified and insured, and all work is carried out in line with current industry standards and health and safety regulations.
We can. Our services cover everything from initial site preparation and groundworks through to construction and specialist works, allowing us to manage projects efficiently from start to completion.
Yes. We offer free, no-obligation estimates and are happy to discuss your project requirements before any work begins.