What is concept design?

Concept design is where possibilities take shape. We translate the brief into spatial ideas: indicative floorplans, massing and arrangement options and high-level design strategies that show how the project could sit on its site. Options are tested against planning policy and your objectives, with early visualisations where seeing the idea helps decide it.

Where Architectural Design sits in the RIBA process

0. Strategic Definition

1. Preparation & Briefing

2. Concept Design

7. Use

3. Spatial Coordination

6. Handover

5. Manufacturing & Construction

4. Technical Design

2. Concept Design

The design team explores options and massing, sets a sustainability approach, and prepares an order-of-cost estimate. Early conversations with planners may begin. By the end of this stage there's a preferred concept that meets the brief and budget.

3. Spatial Coordination

Design moves from ideas to a coordinated layout. Architecture, structure and building services are aligned so rooms, risers, fire strategy and servicing all work together. The result is a frozen arrangement with updated cost and risks understood.

Look at the whole process

Why does strong concept work matter?

Strong concept work gives every later stage something solid to build on. The options are genuinely different rather than variations on one idea, the recommendation is reasoned and the chosen direction is one that planning, budget and brief can all live with.

Early-stage design proposals

We develop initial concepts that explore site potential and start to shape how a project might be realised.

Indicative floorplans and spatial strategies

Indicative layouts test how the brief can sit on the site and how spaces relate to one another at concept stage.

Aligned with planning policy

We align early design thinking with relevant planning policy, supported by visualisations where they aid decision-making.

What do you receive at concept stage?

A set of genuine options rather than one idea drawn three ways: indicative plans and massing for each, an honest account of their strengths and compromises and a reasoned recommendation. Visuals are included where they help judgement, so the direction chosen is one everyone has actually seen, not just imagined.

A project we have worked on

New College Swindon (NHS Set‑Up)

Swindon

Education
Specialist Fit-Out
College

T-Level funding enabled an NHS-spec clinical suite with operating theatre, scrub room, clean/dirty linen routes, training wards and a birthing room. AEC worked with the Principal Contractor on technical specifications and drawings.

View project

FAQs

What do we receive at concept stage?

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Option studies with indicative plans and massing, an assessment of each against brief, site and policy, and a recommended direction with the reasoning set out. Visualisations are included where they aid the decision.

How many options should be explored?

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Usually two to four genuinely distinct approaches. More than that dilutes the analysis; fewer risks missing a better answer. The right number depends on how constrained the site is.

How does planning policy influence concepts?

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Policy sets the envelope: scale, use, character and constraints. Concepts are developed inside a realistic reading of that envelope so the chosen option has a credible route to consent.

What information do you need to start?

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The brief as it stands, site information such as surveys and title plans where they exist, and your priorities on budget and programme. Gaps are normal at this stage and we identify what is worth commissioning.

How long does concept design take?

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Typically a few weeks for straightforward sites and longer where the brief is complex or stakeholders are many. We agree the programme at appointment.

What happens after a concept is chosen?

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The preferred option moves into design development, where it is refined and coordinated into a planning-ready proposal. Concept decisions and their reasoning carry forward as the project's reference point.

What our clients say

From schools to homeowners, we work closely with every client to deliver thoughtful, lasting architecture here’s what they’ve said about working with us.

Sarah Mitchell
Headteacher, Hollowbrook primary

AEC understood exactly what our school needed a space that was calm, practical, and inspiring for students and teachers alike. The whole process felt collaborative from day one, and the end result has had a real impact on daily school life.

James Carter
Private homeowner, Cambridge

Working with AEC was seamless. They listened carefully, challenged our thinking in the right ways, and delivered a design that just works — light, functional, and surprisingly cost-efficient. We couldn’t be happier with the result.

Ravi Patel
Director, Ashore housing development

AEC brought clarity and creativity to a complex residential scheme. Their technical knowledge and attention to detail kept the project on track and their team were genuinely great to work with.

Sarah Mitchell
Headteacher, Hollowbrook primary

AEC understood exactly what our school needed a space that was calm, practical, and inspiring for students and teachers alike. The whole process felt collaborative from day one, and the end result has had a real impact on daily school life.

James Carter
Private homeowner, Cambridge

Working with AEC was seamless. They listened carefully, challenged our thinking in the right ways, and delivered a design that just works — light, functional, and surprisingly cost-efficient. We couldn’t be happier with the result.

Ravi Patel
Director, Ashore housing development

AEC brought clarity and creativity to a complex residential scheme. Their technical knowledge and attention to detail kept the project on track and their team were genuinely great to work with.

Sarah Mitchell
Headteacher, Hollowbrook primary

AEC understood exactly what our school needed a space that was calm, practical, and inspiring for students and teachers alike. The whole process felt collaborative from day one, and the end result has had a real impact on daily school life.

James Carter
Private homeowner, Cambridge

Working with AEC was seamless. They listened carefully, challenged our thinking in the right ways, and delivered a design that just works — light, functional, and surprisingly cost-efficient. We couldn’t be happier with the result.

Ravi Patel
Director, Ashore housing development

AEC brought clarity and creativity to a complex residential scheme. Their technical knowledge and attention to detail kept the project on track and their team were genuinely great to work with.

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