Amogh N P
✦ In loving memory of Amogh N P — Architect · Designer · Visionary ✦
A concept sketch beside a study model — where a design begins.
Unit V25ART101 · Theory of Architecture

Concepts in Architecture

The design idea, the parti, and how a concept becomes form.

≈ 30 min

Every good building starts with an idea — a concept — and the best way to test an idea is to draw it small. The parti is that drawing: the essence of the scheme in a single diagram. This lesson is where theory meets the studio: how a concept is found, fixed as a parti, and grown into form.

Learning objectives

By the end of this lesson, you will be able to — mapped to the course outcomes for Building Materials & Construction I:

1
CO5 · Understand

Distinguish a design concept (the idea) from a parti (its diagram).

2
CO5 · Understand

Explain the parti diagram and the Beaux-Arts esquisse.

3
CO5 · Apply

Identify common sources of architectural concepts.

4
CO5 · Create

Reduce an idea to a parti and develop it toward form.

The big idea

Concept and parti

The concept is the organising idea; the parti (from the French parti pris, “decision taken”) is its diagrammatic essence — often a single sketch. At the École des Beaux-Arts, capturing the parti in a quick esquisse was the first and most important act of design.[1, 2]

Concept → parti → building “rooms around a courtyard” the concept (idea) the parti (diagram) the building (form)
DiagramFrom concept to parti to building — an idea becomes a diagram becomes a massing
A hand draws the parti — the big idea in a few bold lines.
PhotoA hand draws the parti — the big idea in a few bold lines.
Sources of the idea

Where concepts come from

A concept can come from almost anywhere — but a few generators recur. Select one.[3]

Metaphor & analogy

An idea borrowed from elsewhere — a wave, a tree, a journey — abstracted into organising geometry. Metaphor frames the problem; analogy generates the form.[3]

From idea to plan

Organising ideas & parti types

Clark & Pause showed that buildings across history share a small set of recurring organising ideas — and most plans resolve into a handful of parti organisations.[4]

Five ways to organise a plan — partis Central Linear Courtyard Radial Clustered
DiagramCommon parti organisations: central, linear, courtyard, radial and clustered
Plan-to-section

How the plan and section relate as one idea.

Unit-to-whole

How a repeated unit builds the whole.

Repetitive-to-unique

Ordinary parts set against a special one.

Geometry

An underlying geometric order.

Additive / subtractive

Form built up, or carved away.

Symmetry & balance

How the scheme is weighted and mirrored.

A building whose massing reads its parti — rooms around a courtyard.
PhotoA building whose massing reads its parti — rooms around a courtyard.
A massing model reveals the organising geometry from above.
PhotoA massing model reveals the organising geometry from above.
Check your understanding

Self-assessment

1. The parti is best described as:

2. 'Parti' comes from the French 'parti pris', meaning:

3. Clark & Pause's Precedents in Architecture analyses buildings through their:

In a nutshell

Recap

A concept is the single organising idea; the parti is its diagram — the essence in one sketch.
The parti and the Beaux-Arts esquisse train designers to fix the big idea first.
Concepts come from metaphor, site, function, structure/geometry and typology.
A concept is developed diagram → schematic → design, staying true to the original idea.
The evidence

References & further reading

  1. [1]What is a parti? — the organising idea and parti diagram. archisoup studio guide. https://www.archisoup.com/studio-guide/what-is-an-architecture-parti
  2. [2]Parti (architecture) — parti pris, the esquisse and the École des Beaux-Arts. Wikipedia. https://en.wikipedia.org/wiki/Parti_(architecture)
  3. [3]Metaphor and analogy in architectural concept generation. Buildings 9(2):52, 2019. https://www.mdpi.com/2075-5309/9/2/52
  4. [4]Clark, R.H. & Pause, M. Precedents in Architecture: Analytic Diagrams, Formative Ideas, and Partis (4th ed., Wiley, 2012). https://www.wiley.com/en-us/Precedents+in+Architecture:+Analytic+Diagrams,+Formative+Ideas,+and+Partis,+4th+Edition-p-9781118170847

Further reading

  • Clark, R.H. & Pause, M. (2012). Precedents in Architecture (4th ed.). Hoboken, NJ: Wiley.
  • Unwin, S. (2014). Analysing Architecture (4th ed.). Abingdon: Routledge.
  • Ching, F.D.K. (2014). Architecture: Form, Space and Order (4th ed.). Hoboken, NJ: Wiley.

Sources gathered and fact-checked June 2026. Published values vary by source, sample and method — treat as indicative and confirm against the cited standard before structural use.