Studio Matrx Monthly · Volume 1 · Issue 3 · August 2026
Amogh N P
 In loving memory of Amogh N P — Architect · Designer · Visionary 
The Work-Stages & Plan of WorkLesson 5.1
APM for Architecture, Planning & Urban Design/Module 5 · Services & Project Stages

Lesson 5.1 · Services & Project Stages

The Work-Stages & Plan of Work

Why architectural services are broken into stages, and how the world's plans of work map onto how India actually builds

14 min Interactive lessonFree · open lessonByAmogh N P· Architect & interior designer
The hook

Nobody builds a building in one breath

A house, a hospital or a factory is not designed and built in a single continuous act. It is delivered in a deliberate sequence of stages, each with its own questions to answer, its own drawings to produce, its own decision to lock, and its own moment for the client to say yes and release the next slice of your fee. Master the map of those stages and a bewildering project becomes a manageable journey; ignore it and you will do detailed work before the concept is agreed, and redraw everything twice.

A project you can name the stages of is a project you can control.

Why stages exist

Why we break the work into stages at all

The instinct of an enthusiastic young designer is to leap from a first sketch straight into beautiful, resolved drawings. Practice teaches, sometimes painfully, why that is a mistake. A building project carries enormous uncertainty at the start - about the client's real needs, the budget, the site, the approvals, the market - and that uncertainty only resolves gradually. If you commit detailed effort while the big decisions are still fluid, you guarantee rework: the client changes the brief, the budget shrinks, the authority refuses the height, and weeks of carefully drawn detail go in the bin.

Staging exists to manage that uncertainty in the right order. Each stage answers a coarser question before the next stage answers a finer one: first is there a viable project at all, then what is the overall concept, then how is that concept developed and coordinated, then exactly how is it built, then is it built well, and finally does it work in use. You resolve the cheap-to-change decisions - massing, layout, orientation - while they are still cheap to change, and you defer the expensive detail until the direction is locked. This is simply good risk management dressed as a workflow.

Just as importantly, stages give the project natural decision gates. At the end of each stage the client reviews what has been produced, signs it off, and authorises you to proceed and to spend the next tranche of fee. Those gates protect everyone: the client never pays for detailed design of a scheme they have not approved, and you never do that detailed design at risk. The whole apparatus of appointments, fee schedules and progress reporting hangs off this staged skeleton.

One journey, three dialectsRIBA 2020AIA phasesIndia (plain)0-1 Brief2 Concept3 Coordination4 Technical5 Construction6 Handover7 UsePre-designSDDDCDBid + CAClose-outBriefConceptDev + sanctionWorking dwgsConstructionHandovercoarse decisions firstfine detail lastEach stage answers a finer question than the one before it.
Zoom
The same journey in three dialects. The RIBA Plan of Work stages 0 to 7 line up, stage for stage, with the AIA phases and with the plain stage names used in Indian practice - so a project 'at Stage 3' means the scheme is being developed and coordinated, whatever vocabulary your consultants use.

Resolve the cheap-to-change things while they are still cheap to change.

The RIBA map

The RIBA Plan of Work 2020: stages 0 to 7

The most widely used staged framework in the English-speaking world is the RIBA Plan of Work, updated in 2020, which organises the whole life of a building project into eight numbered stages, 0 to 7. Stage 0 is Strategic Definition - deciding whether a building is even the right answer to the client's need, and what the business case is. Stage 1 is Preparation and Briefing - assembling the project brief, the budget, the site information and the team. Stage 2 is Concept Design - the architectural response in outline: the big idea, massing, layout and look. Stage 3 is Spatial Coordination (in older versions, Developed Design) - resolving and coordinating the scheme so the structure, services and architecture actually fit together.

Stage 4 is Technical Design - the detailed information needed to construct the building, including the specialist and contractor design. Stage 5 is Manufacturing and Construction - the building actually gets built while the architect administers the contract and inspects. Stage 6 is Handover - completing, commissioning and handing over the finished building. Stage 7 is Use - the building in operation, aftercare and eventual feedback.

What makes the Plan of Work genuinely useful, rather than just a list, is that for each stage it also sets out the core objectives, the information exchanges (what gets produced and issued), the procurement and programme considerations, and the sustainability checkpoints. It is a shared language: when a British consultant says a project is 'at Stage 3', every other consultant knows precisely what has and has not been decided. That shared vocabulary is the real product. Treat the RIBA stages as a reference map, and remember it is a framework to adapt, not a law to obey.

One journey, three dialectsRIBA 2020AIA phasesIndia (plain)0-1 Brief2 Concept3 Coordination4 Technical5 Construction6 Handover7 UsePre-designSDDDCDBid + CAClose-outBriefConceptDev + sanctionWorking dwgsConstructionHandovercoarse decisions firstfine detail lastEach stage answers a finer question than the one before it.
Zoom
The same journey in three dialects. The RIBA Plan of Work stages 0 to 7 line up, stage for stage, with the AIA phases and with the plain stage names used in Indian practice - so a project 'at Stage 3' means the scheme is being developed and coordinated, whatever vocabulary your consultants use.
The AIA map

The American phases: SD, DD, CD, bidding, CA

North American practice uses a slightly different but entirely compatible vocabulary, embedded in the AIA's standard owner-architect agreements. Its five classic phases of basic services are Schematic Design (SD), Design Development (DD), Construction Documents (CD), Bidding or Negotiation, and Construction Administration (CA). Schematic Design is the concept: the overall scheme, its scale and relationships. Design Development refines and fixes that scheme - materials, systems, dimensions - so it is coordinated and costed. Construction Documents are the drawings and specifications from which the building is priced and built. Bidding or Negotiation is the phase of obtaining and evaluating tenders and awarding the contract. Construction Administration is the architect's role during construction: reviewing submittals, answering queries, certifying payment and inspecting.

The AIA also does something quietly powerful: its documents suggest a default distribution of the basic-services fee across the phases, so that each phase carries a recognised share of the total. This gives principals a starting point for pricing effort and for scheduling cashflow, though the exact split is always adjusted for the specific project.

The RIBA and AIA maps are not rivals; they are two dialects describing the same underlying reality. RIBA Stage 2 corresponds broadly to Schematic Design, Stage 3 to Design Development, Stage 4 to Construction Documents, and Stages 5 to 6 to construction and handover. Learning to translate fluently between them matters because your consultants, clients and reference books will use both, and international projects mix them freely. The point is not which labels you use but that you and your client agree, in writing, exactly what each named stage includes.

RIBA and AIA are two dialects for the same journey.

The Indian frame

How Indian practice actually runs the stages

Indian architectural practice follows the same logic, usually described in plainer language that most clients recognise. A typical private commission runs through: concept or preliminary design; design development or scheme design; statutory or sanction drawings for municipal approval; working, good-for-construction or tender drawings; construction-stage services; and completion or handover. The Council of Architecture's framework for the conditions of engagement and the scale of charges is organised around comparable stages, and its structure - describing what an architect does at each stage and when fees fall due - is a useful neutral reference for how services are conventionally staged in India. Treat the specifics and current status of any published scale as something to verify with the COA and the current regulations rather than quoting from memory.

Government and institutional work adds its own layer. The Central Public Works Department (CPWD) and other public bodies run projects through their own manuals and procedures, with defined stages for preliminary estimates, detailed estimates, tender documents and execution, and with sanctions and administrative approvals gating each move. If you work on public projects you must learn the specific procedural stages of that department.

One distinctively Indian feature is that the statutory sanction stage runs on its own clock and its own drawings, often in parallel with design development, and can dominate the programme. A scheme can be beautifully coordinated and still stall for months awaiting municipal sanction, fire clearance, environmental clearance or utility approvals. Good staging in India therefore always plans the approvals track alongside the design track, and never assumes the two move at the same speed.

Deliverable, gate and fee draw per stageConceptDevelopmentDocumentationConstructionHandoveroutline drawingscoordinated schemeGFC + tender setinstructions + certsas-builts + O&Msign-off gatesapproveapproveapprovecompletefee drawn (indicative)~20%~20%~25%~30%~5%Statutory-approvals track (parallel clock)sanction drawingsfire / environmentutility + occupancyPaid as you deliver - never run ahead of a signed gate.Shares are illustrative; verify structure with the COA conditions of engagement.
Zoom
Deliverables, sign-off gates and fee draws across the stages. Each stage produces a defined deliverable, closes at a client sign-off gate, and releases a tranche of fee - while the statutory-approvals track runs in parallel on its own clock. Fee shares are indicative only.
Deliverables and gates

Deliverables, sign-offs and the decision gates

Each stage is defined less by the time it takes than by what it produces and the decision it enables. At concept, the deliverable is a small set of persuasive drawings - site plan, plans, sections, a massing view, a design narrative - enough for the client to understand and approve the direction, not to build from. At design development the deliverable is a coordinated, dimensioned scheme with materials and systems chosen and a cost check against the budget. At the documentation stage the deliverable is the full construction and tender set. At construction the deliverables are instructions, inspections and certificates. At handover they are the completed building, the as-built information and the operation and maintenance manuals.

Between each stage sits a gate: a formal review where the client signs off the completed stage before you begin the next. These sign-offs are not bureaucratic theatre. They are the mechanism that stops scope creep and protects your fee, because they record precisely what was agreed at each point, so that a later change is visibly a change - a variation to be re-approved and re-charged - rather than a free redraw. A client who has signed off Stage 2 concept and then, at Stage 4, asks to move the staircase and flip the plan is requesting additional work, and the signed gate is your evidence.

The discipline for the practice is simple to state and hard to keep: do not proceed to the next stage until the current one is genuinely signed off, and do not do the next stage's work at risk on a verbal maybe. A signature at each gate is worth a hundred emails of argument later.

A signed gate turns a free redraw into a paid variation.

Fee draws

How fees are drawn down against the stages

The staged skeleton is also how you get paid. Rather than a lump sum at the end - which would leave the practice financing the whole project - fees are drawn down in tranches tied to the completion of each stage. A conventional distribution loads a meaningful share into the early design stages, where much of the intellectual work happens, another substantial share across documentation and tender, and a further portion across the long construction period, released against progress. The exact percentages vary with the project, the appointment and the client, and the COA's conditions of engagement give a conventional structure that you should treat as a reference and verify at source rather than quote as fixed figures.

Tying the fee draw to the sign-off gate aligns everyone's incentives. You are paid as you deliver, so cashflow stays healthy; the client only pays for a stage that has been completed and approved; and neither side is tempted to run ahead of the agreed scope. It also forces honesty about progress: if you cannot in good conscience invoice a stage because it is not really finished, that tells you something real about where the project stands.

Two cautions matter in Indian practice. First, the construction stage is long and its fee is spread thin over many months, so plan cashflow so that a slow site does not starve the studio. Second, agree explicitly, in the appointment, how variations, abortive work and extended construction periods are charged, because these are where fee disputes are born. Fees and appointments are covered in depth in Modules 3 and 4; here the point is only that the money follows the stages.

Deliverable, gate and fee draw per stageConceptDevelopmentDocumentationConstructionHandoveroutline drawingscoordinated schemeGFC + tender setinstructions + certsas-builts + O&Msign-off gatesapproveapproveapprovecompletefee drawn (indicative)~20%~20%~25%~30%~5%Statutory-approvals track (parallel clock)sanction drawingsfire / environmentutility + occupancyPaid as you deliver - never run ahead of a signed gate.Shares are illustrative; verify structure with the COA conditions of engagement.
Zoom
Deliverables, sign-off gates and fee draws across the stages. Each stage produces a defined deliverable, closes at a client sign-off gate, and releases a tranche of fee - while the statutory-approvals track runs in parallel on its own clock. Fee shares are indicative only.
Bodies, documents and frameworks

RIBA Plan of Work 2020

An eight-stage framework (0 Strategic Definition to 7 Use) organising the whole life of a building project, with objectives, information exchanges and checkpoints for each stage

The most widely used shared vocabulary for project stages in the English-speaking world; use it as a reference map to adapt, not a rule to obey.

AIA owner-architect agreements (SD / DD / CD / Bidding / CA)

The North American definition of an architect's basic services in five phases, with a conventional distribution of fee across them

A compatible dialect of the same staged reality; useful for pricing effort and scheduling cashflow across phases.

Council of Architecture (COA) - conditions of engagement and scale of charges

The conventional Indian structure of an architect's stages of service and the points at which fees fall due

A neutral reference for how services are staged in India; verify the specifics and current status with the COA and current regulations rather than quoting figures from memory.

CPWD works procedure

The staged procedures for government and public-sector building works - preliminary and detailed estimates, sanctions, tender documents and execution

If you work on public projects, learn the specific procedural stages and administrative approvals of the relevant department.

Hands-on workshop

Workshop - build your own stage-and-fee map for a real project

This exercise turns the abstract idea of 'stages' into a one-page control document you can attach to an appointment. It takes about an hour and needs only a spreadsheet or a sheet of paper.

A spreadsheet or paper, and the COA conditions of engagement as a structural reference.

Given & goal
Goal: a stage map with deliverables, sign-offs and fee draws for one project
Inputs: a real or imagined commission (a house, a small office)
Time: ~60 minutes
  1. 1List the stages you will use, in your own chosen vocabulary, from strategic definition/brief through concept, design development, statutory approval, documentation/tender, construction, to handover and aftercare. Write a one-line objective for each - the coarse question it answers.
  2. 2For each stage, name the concrete deliverable: the specific set of drawings, schedules or documents the client receives at the end of it. Be specific ('coordinated GA plans, sections, elevations at 1:100 with outline specification'), not vague ('design').
  3. 3Mark the sign-off gate at the end of each stage: what exactly the client is approving, and what proceeding past it authorises you to do and to spend.
  4. 4Assign an indicative share of the total fee to each stage so the shares sum to 100 percent, loading design and documentation appropriately and spreading construction over its long duration. Note that these are indicative and must be reconciled with the COA conditions of engagement and your appointment.
  5. 5Draw the approvals track as a parallel line beneath the design track, marking where sanction, fire, environmental or utility clearances must start and land - and where they could stall the programme.

You’ll walk away with
A one-page stage map showing, for each stage, its objective, its deliverable, its client sign-off gate and its fee draw - plus a parallel approvals track - ready to inform a real appointment.

The worked example

Three altitudes on the same idea

Read the band that fits you — or all three.

For the architectRun projects and a practice with command

As principal, make the staged plan of work the backbone of every appointment: define the stages, their deliverables and their sign-off gates in writing, and tie your fee draws to them. Choose a vocabulary - RIBA, AIA or plain Indian stage names - and make sure the client agrees exactly what each stage includes and excludes. The discipline of not starting the next stage until the current one is signed off is one of the cheapest forms of risk management you will ever practise.

For the project leadDeliver on time, on budget, on brief

As the project lead, the stages are your programme and your control system. Know at every moment which stage the job is really in, what must be delivered to close it, and whose sign-off you are waiting for. Guard the gates ruthlessly - resist starting detailed work on an unapproved scheme, and flag the day a client request crosses from a refinement into a variation. In India, run the statutory-approvals track as a parallel programme with its own milestones, because it will not wait for your design to be ready.

For the studentThe business of architecture, made clear

Learn the stages as a map you can carry into any studio, anywhere. Memorise the RIBA 0 to 7 sequence and the AIA SD-DD-CD-Bidding-CA phases, and practise translating them into the plain Indian stage names - concept, design development, sanction drawings, working drawings, construction, handover. When you understand that a project resolves coarse decisions before fine ones, your own studio design work will improve, because you will stop detailing before your concept is settled.

Misconception check

The stages are just administrative box-ticking. A good designer can work fluidly through them, jump ahead to the interesting detail, and sort out the paperwork later.

The stages are not paperwork; they are risk management made visible. Their whole purpose is to resolve decisions in the right order - coarse before fine, cheap-to-change before expensive-to-change - so that you never invest detailed effort in a scheme that the client, the budget or the authority has not yet confirmed. Jumping ahead to detail before the concept is signed off is precisely how practices guarantee rework: the brief shifts, the budget tightens, the sanction is refused, and the beautiful detail is redrawn. The gates between stages also protect your fee and your scope, because a signed sign-off records what was agreed and turns a later change from a free redraw into a chargeable variation. Far from slowing a good designer down, disciplined staging is what lets a good designer spend creative energy where it counts, at the right moment, and get paid fairly for it.
Try it

Do it yourself

Test your grip on the map with these quick checks.

  1. 1Translate 'the project is at RIBA Stage 3' into an AIA phase and into a plain Indian stage name. What has and has not been decided at that point?
  2. 2For a house you know, name the deliverable and the client sign-off at the end of the concept stage versus the end of the documentation stage.
  3. 3Why is it risky to begin detailed technical design before the concept stage is signed off? Give a concrete example.
  4. 4Sketch how the statutory-approval track could run in parallel with, and potentially delay, the design track on an Indian project.
Take this with you

The one line to carry out

Architectural services are delivered in a deliberate sequence of stages - concept, development, documentation, construction, handover - that resolve coarse decisions before fine ones, each stage defined by a deliverable, closed by a client sign-off, and paid by a fee draw; the RIBA Plan of Work, the AIA phases and India's conventional stages are three dialects of the same map, and disciplined staging is not bureaucracy but the profession's core method of managing risk, scope and cashflow.
Take it further
References & further reading

Peer-reviewed journals & authoritative standards

  1. 01RIBA Plan of Work 2020 OverviewRoyal Institute of British Architects (RIBA), 2020.
  2. 02The Architect's Handbook of Professional Practice, 15th edition (AIA)The American Institute of Architects / Wiley, 2013.
  3. 03Conditions of engagement and scale of charges for architects (structure and stages)Council of Architecture (COA), 2024.
  4. 04Works procedure and staged project delivery in public worksCentral Public Works Department (CPWD), 2024.
  5. 05Stages of a construction project and the plan of work explainedDesigning Buildings Wiki, 2024.
Related lessons
Recap
Projects are staged because uncertainty resolves gradually, so we settle massing and layout while they are cheap to change and defer expensive detail until the direction is locked. The RIBA Plan of Work (stages 0 to 7) and the AIA phases (SD, DD, CD, bidding, CA) describe the same journey in different words, and Indian practice runs comparable stages - concept, development, sanction drawings, working drawings, construction, handover - with the COA conditions of engagement as a reference. Each stage has a deliverable, a sign-off gate and a fee draw, and in India the statutory-approvals track runs in parallel on its own clock.
Carry forward →

With the whole map in view, we now zoom into its first act - the design stages themselves, from brief and concept through developed and detailed design, and the deliverables, coordination and approvals that carry a scheme from idea to something ready to document.

A

The author

Amogh N P

Architect, interior designer, and creative polymath. Studio Matrx began in his notebooks — his vision of design made honest, useful, and open to everyone. Its Academy is written and taught in his memory, and free, forever.

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