Debenhams – Worthing

Client

Craig Developments

Services

Unknown

Team

SWP – Structural Engineers ECE – Planning SWECO – Building Safety team & Fire Engineers SWECO – Building Control

Contractors

Craig Construction

Total Build Cost

TBC £16m+

Reusing Buildings: A Sustainable Approach to Heritage and Design

The reuse of existing buildings is paramount in today’s architectural practice. Demolishing structures to make way for new ones is not an effective use of heritage, embodied energy, or time. This project exemplifies our commitment to revitalising the existing structure, and adapting it for contemporary use, while preserving its historical value. Our objective is to help our client transform the building into something modern and functional, without compromising its original character.

The challenge was to take an existing design and reimagine the building in a way that could serve future generations. By retaining the key Art Deco features and integrating contemporary elements, we’ve ensured that the building remains relevant and sustainable for the long term.

Retrofitting existing buildings is a particularly complex process. Each project is unique, and there are always variables—such as undocumented changes or hidden structural elements—that can complicate the design and construction process. We rely on thorough analysis and flexible approaches to adapt to each building’s specific characteristics, even though the core principles of adaptive reuse remain the same.

The original 1926 structure features a concrete-encased steel frame, with a combination of precast concrete and reinforced clay block floors, and rendered brick cavity walls. Our goal was to extend the building vertically by two stories, incorporating internal alterations and inserting new elements to provide both residential and retail spaces. This is a highly intricate operation that demands close coordination with the structural, fire safety, and building control teams, as well as adherence to noise and energy performance standards. Our designs were developed to meet both the latest building regulations and the client’s sustainability goals.

The initial plans were provided as 2D drawings, but upon reviewing the site, we noted several discrepancies. To address this, Archidata assisted us by conducting a comprehensive 3D survey, creating a point cloud, and developing a 3D model of the building as it stood. Working with existing structures, a 3D model is essential for ensuring that both the existing conditions and proposed modifications align accurately. Traditional 2D drawings often fail to capture the complexities of level changes and irregular shapes in older buildings.

Once the 3D model was established, we integrated the original 2D AutoCAD plans into Revit, which allowed us to begin the detailed design process. Simultaneously, the structural engineer was working on the structural framework within the building. The use of Revit streamlined coordination between the two teams, enabling us to optimisze the design and retain as much of the existing building as possible. This approach not only reduced waste but also minimiszed the need for new materials, which is a key objective in sustainable design.

Our next step was to provide the necessary elements for the Building Control submission, ensuring the design could progress to the construction phase. This involved collaborating with the wider design team and managing the release of drawings through the project documentation system. For team members who do not use Revit, we provided links to the model, allowing them to track the project’s development in real-time.

Reuse and retrofit projects are some of the most rewarding we undertake. They offer the opportunity to preserve architectural history while minimiszing the environmental impact of new construction. By reducing the need for new materials and repurposing existing structures, we can contribute to a more sustainable and responsible future. Both preservation and sustainability should be the primary considerations when evaluating an existing building for reuse.