D&E

Architectural Design :

RIBA Work Stages


In Architectural Design, integrated design approach and technical excellence are the keys to add significant value to a project.


The RIBA Plan of Work is a document that outlines all stages in the planning, design and building process, from conception to completion on site. It is the most common document used in the UK to describe the stages in construction projects.

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Reference : The RIBA Plan of Work 2020 

Concept Design :

RIBA Stage 2


At this stage, the client receives the first drawings of the design ideas developed from the project brief. There may be meetings, workshops or general correspondence to discuss iterations of the concept design. The Final Project Brief is defined from a review of the initial brief. This administrative exercise includes defining how the Project Strategies will affect the design process, with regards to Construction, Maintenance and Operation, Health & Safety, Sustainability, Handover


The concept design also often includes an initial proposal for structural design, building services and specifications. These can be used for the Cost Information (defining all the costs associated with the project).


When the design reaches RIBA stages 2/3, a programme review may be useful. Depending on the nature of the design, third-party consultants may be approached. This is also a stage at which it could be of interest to consider relevant Research & Development. For example, there may be advancements made in project-related fields, interesting materials or new solutions that may improve the design.

Developed Design :

RIBA Stage 3


The Spatial Coordination stage is where a coordinated design really takes form. Continuing on from a settled concept design, the project is drawn up more clearly in CAD and developed alongside structural design, building services and a cost exercise. Cost information is usually finalised at the end of RIBA stage 3.


As a result of this coordination, the design may change in details throughout stage 3, but always referring back to the Project Brief and Project Objectives. Due to the adaptability of the RIBA Plan of Work, submission time for planning consent may vary between the stages, but it usually occurs during or at the end of stage 3.


A planning application requires a degree of detail in drawings and information that is dependent on your type of project. In many areas, the application can be made online.

Technical Design :

RIBA Stage 4


Technical Design is a refinement of the existing design, essentially preparing the necessary drawings and documentation for tendering. It often involves approaching relevant specialist subcontractors, such as a glazing manufacturer, or joinery firm.


The level of detail required may vary according to the type of procurement and the nature of the project: will the drawings be used for actual construction on-site? Is this being provided directly by the subcontractors?


As with planning, the stage at which the tender process occurs may vary; traditionally it is done at the end of stage 4 however. This is mainly due to the level of detail needed by contractors to price their works correctly.


The Architect’s services, to submit for tendering, include:

  • Detailed drawings
  • Schedule of work
  • Specifications (essentially a document that specifies how to build according to the agreed-upon design)
  • Submission of Building Regulations to either Building Control or an Approved Inspector

Projects :