National Assembly for Wales
The site has a powerful presence, with uninterrupted views over Cardiff Bay. The resulting building, with vistas of sky and water, looks outwards to Wales and beyond.
The election of the Welsh National Assembly in 1999, was a turning point in the history of Wales. Its home, Cardiff’s former docklands, is a striking addition to the local scene and a statement of faith in the regeneration process. The Assembly building embodies democratic values of openness and participation, while its progressive environmental agenda establishes a new standard for public buildings in Britain.
The setting is the Pierhead, once the centre of the coal exporting trade. Nearby are the Grade I listed Pierhead Building and the new Wales Millennium Centre. The idea of openness is exemplified by the transparency of the building. Public spaces are elevated on a slate-clad plinth and cut away to allow daylight to penetrate the administrative spaces at lower level. A light-weight, gently undulating roof shelters both internal and external spaces, pierced by the protruding extension of the Debating Chamber.
A large circular space at the heart of the building, the Chamber is defined by the dramatic roof which is drawn down from the roof above to form the enclosure. The Assembly also includes exhibition and education spaces, a café, committee and meeting rooms, press facilities, offices for the principal officers of the Assembly and a members’ lounge.
The servicing strategy responds to the varying demands of the internal spaces – air-conditioning is supplied in the debating chamber, while the public lobby is naturally ventilated. Heat exchangers capitalise on the potential of the ground as a cooling mechanism, while the thermal mass of the plinth tempers fluctuations in the internal environment. In this way, the design achieves significant energy savings compared to traditional buildings.
Hard landscaping, together with a canopy of trees, creates a close for the Assembly and completes the jigsaw of new development in this part of Cardiff Bay.
Project information:
- Place/Date: Cardiff, Wales 1998 - 2005
- Client: National Assembly for Wales
- Cost: £41 million
- Gross Internal Area: 5,308 m²
- Architect: Richard Rogers Partnership
- Structural Engineer: Arup
- Environmental Consultant: BDSP Partnership
- Project Manager: Schal
- Landscape Architect: Gillespies
- Fire Consultant: Warrington Fire Research
- Acoustic Consultant: Sound Research Laboratories
- Access Consultant: Vin Goodwin Access Consultant
- Broadcasting Consultant: Department Purple
- Wind Engineering Consultant: Arup
- Façade Engineer: Arup
- Bomb Blast Consultant: TPS Consult
Awards
- Civic Trust Award, 2008
- RIBA Award National, 2006
- RIBA Stirling Prize Building of the Year Shortlist, 2006
- Structural Steelwork Design Award, 2006
- Gold Medal in Architecture, National Eisteddfod, 2006
- Natural Stone Award, 2006
--RSHP
Featured articles and news
Future Homes Standard Essentials launched
Future Homes Hub launches new campaign to help the homebuilding sector prepare for the implementation of new building standards.
Building Safety recap February, 2026
Our regular run-down of key building safety related events of the month.
Planning reform: draft NPPF and industry responses.
Last chance to comment on proposed changes to the NPPF.
A Regency palace of colour and sensation. Book review.
Delayed, derailed and devalued
How the UK’s planning crisis is undermining British manufacturing.
How much does it cost to build a house?
A brief run down of key considerations from a London based practice.
The need for a National construction careers campaign
Highlighted by CIOB to cut unemployment, reduce skills gap and deliver on housing and infrastructure ambitions.
AI-Driven automation; reducing time, enhancing compliance
Sustainability; not just compliance but rethinking design, material selection, and the supply chains to support them.
Climate Resilience and Adaptation In the Built Environment
New CIOB Technical Information Sheet by Colin Booth, Professor of Smart and Sustainable Infrastructure.
Turning Enquiries into Profitable Construction Projects
Founder of Develop Coaching and author of Building Your Future; Greg Wilkes shares his insights.
IHBC Signpost: Poetry from concrete
Scotland’s fascinating historic concrete and brutalist architecture with the Engine Shed.
Demonstrating that apprenticeships work for business, people and Scotland’s economy.
Scottish parents prioritise construction and apprenticeships
CIOB data released for Scottish Apprenticeship Week shows construction as top potential career path.
From a Green to a White Paper and the proposal of a General Safety Requirement for construction products.
Creativity, conservation and craft at Barley Studio. Book review.
The challenge as PFI agreements come to an end
How construction deals with inherited assets built under long-term contracts.
Skills plan for engineering and building services
Comprehensive industry report highlights persistent skills challenges across the sector.
Choosing the right design team for a D&B Contract
An architect explains the nature and needs of working within this common procurement route.
Statement from the Interim Chief Construction Advisor
Thouria Istephan; Architect and inquiry panel member outlines ongoing work, priorities and next steps.


























