Understanding the RIBA Plan of Work: A Step-by-Step Guide to the Design and Build Process

The RIBA Plan of Work is the industry-standard framework used to guide building projects from the earliest idea through to long-term use. Originally introduced in the 1960s, it has been refined over time to reflect modern construction practices, digital workflows and sustainability priorities.

The current version divides a project into eight clear stages, helping clients and project teams understand what happens when, who is responsible, and what information is required at each point. Below, we break down every stage in detail, starting at the very beginning.

How the RIBA framework is structured

The Plan of Work organises the full lifecycle of a building into eight sequential stages, from defining whether a project is viable at all, through to occupation, operation and future adaptation. Each stage has specific objectives, outputs and decision points designed to reduce risk and improve coordination.

Stage 0: Establishing the project’s purpose

This initial stage focuses on determining whether construction is the right solution to meet the client’s needs. Rather than design, the emphasis is on strategy, options and evidence-based decision-making.

Typical activities include:

• Defining high-level client requirements
• Exploring alternative solutions and assessing feasibility
• Preparing and testing a business case
• Reviewing lessons learned from previous projects
• Carrying out early site appraisals

At this point, no formal design team is required. Clients may instead appoint advisers to provide strategic or commercial input.

Additional considerations often explored include:

• The client’s experience with similar projects
• Funding availability and appetite for risk
• Governance structures and decision-making authority
• Whether the project is for occupation or development
• Third-party interests or consultation requirements
• Alignment with wider organisational or business goals

Although no design work is undertaken, this stage is an ideal time to consider future digital processes such as BIM and information management. Clear documentation created here becomes a vital reference throughout the project.

Stage 1: Defining the brief and project parameters

Once a construction project is confirmed as the preferred route, attention shifts to shaping a detailed brief that clearly captures objectives, expectations and constraints.

Key tasks include:

• Developing the Project Brief
• Undertaking early feasibility studies
• Agreeing the overall budget
• Commissioning site surveys and reports
• Establishing the project programme and execution plan

Other important activities typically involve:

• Clarifying roles, responsibilities and approval processes
• Advising on statutory, planning and health and safety obligations
• Assessing procurement options and project risk
• Setting up project administration and quality procedures
• Identifying specialist consultants required later
  Reviewing site conditions, access and constraints

If digital delivery is planned, information requirements and BIM responsibilities are also defined at this stage. A well-developed brief here reduces uncertainty and helps avoid costly changes later.

Stage 2: Developing the design concept

This stage marks the formal start of design work. The appointed design team prepares a coordinated concept that responds to the brief while taking account of cost, programme and technical strategy.

Core outputs include:

• A developed architectural concept
• Integration of early engineering input
• Alignment with the cost plan and outline specification
• Design reviews and client feedback sessions

Alongside concept development, the team will:

• Finalise the Project Brief
• Refine procurement and construction strategies
• Establish roles and responsibilities across disciplines
• Prepare outline specifications and design programmes
• Advise on additional specialist appointments

Where BIM is used, early models may be created for testing massing, performance and spatial relationships. The stage concludes with formal client approval to move forward.

Stage 3: Coordinating the design in detail

Stage 3 focuses on resolving the design so that all elements work together spatially before technical detailing begins. This is a critical coordination phase.

Typical activities include:

• Detailed design studies and engineering analysis
• Cost testing and value alignment
• Producing a fully coordinated spatial design
• Managing design changes through formal procedures
• Preparing and submitting the planning application

The team integrates structural, services and architectural information while maintaining alignment with budget and programme. Regular cost reviews help ensure design decisions remain financially viable.

Client engagement remains central, with confirmation of concept acceptance, brief updates and advice on regulatory feedback. BIM models, where used, become a key coordination tool during this stage.

Stage 4: Producing construction-ready information

At this point, the coordinated design is translated into detailed information suitable for manufacture and construction. Some technical design work may continue into early construction, depending on procurement.

Key outputs include:

• Fully detailed architectural and engineering information
• Coordinated building systems designs
  Specialist subcontractor input
• Final specifications and schedules
• Building Regulations submissions

The design team works closely with consultants and specialists to resolve details, materials and interfaces. Costs continue to be monitored, with updates provided as technical decisions are finalised.

Where BIM is used, models are developed to a high level of detail and formally reviewed before sign-off.

Stage 5: Building the project on site

This stage covers the physical construction of the building. Focus shifts to quality, coordination and contract administration.

Activities typically include:

• Site setup and logistics planning
• Manufacturing and installation of building systems
• Ongoing inspections and progress monitoring
• Responding to site queries and changes
• Commissioning systems and preparing handover information

The project team administers the building contract, manages payments and ensures work meets agreed standards. As construction concludes, attention turns to commissioning, documentation and readiness for occupation.

The stage culminates in Practical Completion, confirming the building is ready for use.

Stage 6: Transitioning into occupation

Stage 6 ensures the building is handed over smoothly and that users can operate it effectively from day one.

Key elements include:

• Structured handover in line with the Plan for Use
• Completion of commissioning and defect resolution
• Issuing final documentation and manuals
• Initial post-occupancy reviews and aftercare

Documentation such as building manuals, log books and certification is finalised. Where agreed, Soft Landings processes may be used, with the project team supporting occupants during early use.

Formal reviews and debriefs help capture lessons learned and inform future projects.

Stage 7: Operating and learning from the building

The final stage covers the ongoing life of the building, from everyday use through to future change.

Activities may include:

• Facilities and asset management
• Post Occupancy Evaluation
• Monitoring energy and performance outcomes
• Updating building information over time

Feedback gathered during use helps verify whether project objectives have been achieved and can inform future refurbishment or redevelopment. If BIM has been used, updated models become valuable long-term assets.

Supporting principles within the Plan of Work

Project strategies

A series of strategies underpin the design process, including cost, fire safety, sustainability, planning, procurement and inclusive design. These are outlined early and developed in parallel with design progression.

Procurement flexibility

The framework supports multiple procurement routes, from traditional contracts to design-and-build and management approaches, allowing teams to adapt the process to suit project needs.

Information handovers

Defined information exchanges at the end of each stage ensure decisions are captured and the next phase begins with clarity and accountability.

Sustainability and performance

Recent updates place stronger emphasis on sustainability outcomes, whole-life carbon, circular economy thinking and post-occupancy evaluation.

Digital workflows

The Plan of Work supports structured digital delivery through defined information requirements, execution planning and emerging technologies such as digital twins.

Final thoughts

The RIBA Plan of Work provides a clear, flexible structure for managing building projects from inception to long-term use. By defining responsibilities, decision points and information requirements at every stage, it helps teams collaborate more effectively, reduce risk and deliver better-performing buildings. While the framework continues to evolve, its core purpose remains the same: supporting successful, well-managed projects through clarity and coordination.

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