How buildings are designed
Every building goes through the same broad stages, from understanding what the client needs to handing over the finished building. Learn the process and the people involved.
In this lesson you will
- Describe the stages of a building project
- Explain what happens at each design stage
- Know who is on a typical project team
- Understand why decisions get harder to change later
The stages
Different countries name them differently (for example the RIBA Plan of Work in the UK, or design phases in AIA contracts), but the pattern is the same:
- Brief: understand the client's needs, budget, site and constraints.
- Concept design: explore options; choose a direction.
- Developed (schematic/design development) design: fix the layout, form, structure and main systems.
- Technical design / documentation: everything needed for approvals, pricing and construction.
- Construction: the builder builds; the design team answers questions and inspects.
- Handover and use: the building is occupied; feedback informs future projects.
The team
The client sets the brief and budget. The architect leads design and often coordinates consultants: structural engineer, services engineers (mechanical, electrical, hydraulic/plumbing, fire), quantity surveyor/cost planner, landscape architect, town planner, and specialists (acoustic, access, sustainability). The builder and trades construct it; certifiers and authorities approve it.
The cost of change
Moving a wall on a concept sketch costs minutes; after documentation it costs days of redrawing; on site it costs demolition. That's why early stages focus on getting the big decisions right — site, layout, orientation, structure — and why clear briefs matter.
Common mistakes
Starting to design before the brief is clear.
Spend time on the brief and site first — they shape every later decision.
Leaving consultants out until documentation.
Involve structural and services engineers from concept, when their input is cheapest to use.
Exercise
Map a project
- Pick a building you know (a school, a house, a library).
- Write what the brief might have said in five points.
- List the consultants who were probably involved.
- Guess one decision made at concept stage that would be very expensive to change now.
You should end up with: A simple project map from brief to building.
Checklist
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Lesson quiz
Order the stages.
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