Crafting Tomorrow’s Structures Today

DDX is your single source for design and detailing services. With over 30 years combined experience in the design, manufacture and erection of modern and traditional building systems. We have the capability to cater for a wide range of projects from residential to commercial developments.

Ready to Elevate Your Project?

Let's Build Together.

Who We Are

DDX is an organization of talented and highly experienced experts, offering design and detailing services to the construction industry. We are eXperts in modern methods of construction, specializing in commercial, industrial and residential projects that utilize a Hybrid combination of materials such as light gauge steel and sustainable structural Mass Timber components.

Structural Design

We specialize in the structural design of Light Gauge Steel Framing (LGSF), Hot Rolled Steel (HRS), and Mass Timber construction, including hybrid systems. From straightforward projects to the most complex architectural visions, we deliver tailored solutions that prioritize efficiency, sustainability, and buildability. Our expertise ensures your structure is designed to meet the highest standards of safety and performance.

Temporary Works Design

We design temporary works for a variety of structures, supporting projects through every stage of construction. Our solutions ensure safety, practicality, and compliance, whether for shoring, scaffolding, formwork, or other temporary structures, allowing your project to proceed smoothly.

Structural Detailing

Our structural detailing services cover every stage of construction, from design and build to ready-designed structures, including comprehensive factory and site drawings. By combining precision with innovation, we deliver accurate, fully coordinated detailing that streamlines fabrication and construction, saving you time and reducing waste.

Structural Engineer Registration

For projects in England and Scotland, we provide Gateway 2 or Structural Engineer Registration (SER) packs, ensuring full compliance with regulatory standards. Our detailed and reliable documentation streamlines the approval process, giving you peace of mind and keeping your project on track.

Connection Design

From the simplest connections to the most intricate and demanding designs, we provide expert solutions to ensure the structural integrity of your project. Our connection designs are engineered for optimal performance and efficiency, seamlessly integrating into your overall structural plan.

Building Information Modeling

Our Building Information Modeling (BIM) coordination services integrate all aspects of your project into a cohesive digital model. By facilitating collaboration among stakeholders, we help you reduce clashes, enhance efficiency, and achieve seamless construction execution.

What Makes Us Different


At DDX, we bring over 30 years of expertise in steel and mass timber construction to deliver sustainable, efficient, and forward-thinking design solutions. By combining traditional craftsmanship with modern innovation, we provide fully integrated design and detailing services tailored to your project’s unique needs.

From hot and cold rolled steel to mass timber, our hybrid approach ensures every structure is not only buildable and efficient but also environmentally responsible. Trust us to turn your vision into a reality that stands the test of time—both structurally and sustainably.

Let’s Work Together.

Ready to start your project with our experts? We will begin to craft your project from start to finish with our modern techniques. Contact us to get started today.