About Us
About Us
We Are Leading International Company In The World
Marquis & Sons Construction is a trusted, family-run building company based in Cardiff, proudly serving South Wales with over 50 years of combined experience in the construction trade.
We take on all aspects of building work, including domestic and commercial projects, renovations, extensions, landscaping, insurance work and full project management. Whether it’s a single-room upgrade or a large-scale development, our commitment is the same – every project matters.
Skilled Local Team
Our Cardiff-based team delivers quality workmanship in every build—extensions, renovations, landscaping, and more.
Project Management
We coordinate all trades, suppliers, and approvals for a smooth build.
Quality Results
Reliable workmanship, clear communication, and lasting value in every project.
2M
Revenue in 2025 (Million)
55+
Collaegues & Counting
55+
Project Completed
50+
Year of experience
The Team
Our Experts
Mike Rich
Lead Architect
Jenny Smith
Head Engineer (US)
George Doe
Head Engineer (CN)
Maria Jay
Head Engineer (AU)
Quality & Safety
Quality & Safety
Building with Care, Built to Last
We are committed to delivering projects that protect people, respect the environment, and stand strong for generations. Every step of our work follows strict standards to keep communities safe and healthy.
We Follow Best Practices
Our approach is guided by proven methods and modern standards, ensuring reliability and client satisfaction.
- Sustainablility
- Project On Time
- Modern Technology
- Latest Designs
Trust and Worth
Our Clients
