The architect's proposal framework: five pillars that make a fee feel worth it
Clients rarely choose an architect on the fee letter alone; they choose the practice whose proposal shows it already understands the project. This framework gives your proposal a reading order that sells judgement first and deliverables second.

The framework
Structure your proposal around five pillars, not a list of services
The core pillars that an architect must consider in their design are function, structure and context. The pillars of a proposal that sells that design are different: frame the brief, show your design thinking, phase the scope, price each phase with clear exclusions, and make acceptance easy.
Search for an architectural proposal and you find the same thing again and again: a list of phases, a payment schedule and a page of exclusions. Those parts matter. Without them you are exposed on scope, on fees and on liability. But they describe a contract, not a choice. A homeowner or developer comparing practices reads that page last, after they have already decided who they trust.
The proposals that feel considered do something else first. They show the client their own project, understood better than they could put it themselves. Then they show how the practice thinks. Only after that do they lay out what gets delivered, when and for what fee. The order is the argument: judgement first, deliverables second, paperwork last.
The five pillars, in reading order
Each section supports a specific decision the client is making as they read.
Frame the brief
An executive summary that restates the project in the client's own terms, including what they care about but did not say.
Show the design thinking
Site reading, constraints and an early point of view, plus the past projects and people relevant to this job.
Phase the scope
Schematic design, design development, construction documents, bidding and construction administration, each with its deliverables.
Price each phase, with exclusions
A fee tied to every phase, payment milestones, and a plain-language list of what is not included and how extras are charged.
Make acceptance easy
Short terms, a clear next step and a way to approve or sign without printing, scanning and emailing a document back.
This is also the practical answer to how to structure a proposal for a project. The brief comes first because it earns attention. Thinking comes second because it earns trust. Scope and price come next, when the client is ready to judge value rather than cost. Acceptance closes the document, so the decision and the action sit on the same page.
Compare that with a standard fee letter, which opens with the practice's services and closes with a signature block. It answers the question "what do you do?" when the client is asking "do you understand what I need?"
Brief and thinking
Open with the client's brief and your design reasoning
Restate the brief in the client's own words, then add what you noticed that they did not: a site constraint, a planning risk, an opportunity in the budget. Follow it with only the past projects and team members that match this job, so the client sees proof, not a brochure.
The executive summary is the page clients read in full, so give it real work to do. Open with their goal in their own vocabulary. If they said "more light in the kitchen and somewhere for the kids to do homework", say that, not "enhanced daylighting and flexible living space". Then add the thing they did not mention: the north-facing garden that makes a rear extension darker than they expect, or the conservation area that shapes what the roof can do. That paragraph is where the client decides you are worth the fee.
Next, show a point of view before any fees appear. A site analysis sketch, a massing diagram or a pair of precedent images can carry more weight than a page of text. Use visuals to show thinking, not to decorate. Every image should answer a question: why this orientation, why this height, why keep that wall.
The firm profile belongs here too, but cut it down. Pick the past projects closest to this brief in type, scale and constraint, and name the people who will actually run the job. A long list of awards and sectors reads as a brochure. A short, relevant selection reads as evidence.
Show your thinking before your fees
What the brief and thinking sections should prove
You heard the brief
The summary restates the client's goals in their own words, without architectural jargon.
You saw something they did not
At least a single constraint or opportunity the client had not raised, explained in plain language.
You have done this before
A short selection of past projects that match the type and scale, with what each taught you.
They know who they will work with
Names and roles of the people running the project, not a full staff list.
Scope and price
Phase the scope and tie every fee to a deliverable
Split the work into the standard phases, list what the client receives at the end of each, and attach a fee and a payment milestone to every phase. Then write the exclusions and additional services in plain language, with a contingency note on time and cost, so nothing surprises the client later.
Phases give a client something they rarely get from professional services: a map. Use the names they will hear from builders and planners, and explain each in a sentence. Schematic design settles the big moves. Design development fixes materials, structure and services. Construction documents produce the drawings a contractor prices and builds from. Bidding helps the client compare tenders. Construction administration covers site visits, queries and sign-off while the build happens.
Tie a fee to each phase and a payment to the end of each, so the client pays for things they can see. Whether you charge a fixed fee per phase or a percentage of construction cost, show how the total breaks down. Clients accept a higher number more easily when they can see what each part buys.
Construction administration deserves its own line. Many practices price it separately, as a time-based fee, because nobody knows yet how long the build or the contractor will take. Saying so up front avoids an awkward conversation halfway through the job.
Phases, deliverables and what usually sits outside the fee
| Phase | Deliverables | Often excluded or extra |
|---|---|---|
| Schematic design | Concept plans, elevations, sections and perspective sketches | Extra design options beyond those agreed |
| Design development | Developed drawings, outline specification, planning application | Planning fees, surveys, specialist consultants |
| Construction documents | Signed construction drawings and details | Revisions after sign-off, detailed cost estimates |
| Bidding | Tender package, contractor shortlist, tender comparison | Negotiating more contractors than agreed |
| Construction administration | Site visits, contractor queries, completion sign-off | Visits beyond the agreed schedule, travel costs |
Write exclusions as sentences, not legal fragments. "Planning application fees are paid by you directly to the council" is clearer than "Statutory fees excluded". Name the additional services a client is likely to need, such as a structural engineer, a party wall surveyor or a cost consultant, and say how you charge if they ask you to arrange them. Then add a short contingency note: a margin on time and cost for things nobody controls, like weather, material prices and planning decisions.
Worked example
Build a proposal step by step: a house extension example
Here is an illustrative house extension proposal built with the framework, from the brief reframe to the fee table and exclusions. The practice, client and figures are invented to show the method; replace them with your own fee history and local costs before you send anything.
Illustrative example: a couple want a 180 m² family home extended at the rear, with a larger kitchen and a ground-floor home office. The fictional practice writes the brief reframe like this.
Brief reframe: "You want a kitchen the whole family can use at once, and a quiet room for working from home. Your garden faces north, so we will bring light in from above rather than from the back wall, and keep the home office at the front where it is calmest."
Notice what that paragraph does. It uses the client's words, adds a site insight and previews a design move without drawing anything yet.
Illustrative example: fee by phase for a rear extension
Example figures only, for a fictional practice and project.
| Phase | Deliverables | Example fee | Paid when |
|---|---|---|---|
| Schematic design | Concept plans and sketches, client review meeting | £3,000 | Concept approved |
| Design development | Developed drawings, planning application | £4,500 | Application submitted |
| Construction documents | Construction drawings and details | £5,000 | Drawings issued |
| Bidding | Tender package and comparison | £1,500 | Contractor appointed |
| Construction administration | Site visits and sign-off | Charged by the hour | Monthly in arrears |
Exclusions in the example, and why each is there
Planning and building control fees
Paid by the client to the authority, so the practice never carries a cost it cannot control.
Structural engineer and surveys
Appointed by the client on the practice's recommendation, which keeps liability with the specialist.
Extra design options
Charged by the hour once the agreed options are explored, so revisions stay a choice, not a habit.
Contingency on time and cost
A plain note that weather, material prices and planning decisions can move dates and budgets.
Illustrative example: the same scope, before and after
| Section | Flat fee letter | Framework version |
|---|---|---|
| Opening | Practice history and services | The client's brief, reframed with a site insight |
| Thinking | None | Sketches and relevant past projects |
| Fee | A single total | A fee per phase with deliverables and payment points |
| Exclusions | A legal list in small print | Plain sentences with the reason for each |
| Close | Sign and return | A clear next step and an online approval |
Acceptance
Make acceptance easy with clear terms and a web proposal
Keep terms short and readable, then let the client approve in the document itself. ChatGPT cannot draw architectural plans you could build from, but it can help tidy proposal text; your site reading, design judgement and fees still have to come from the practice.
Terms protect you, so keep them, but write them for a client to read. Cover client responsibilities such as information, access and timely decisions. Cover delays outside your control, rising material prices, insurance on site and what happens if the project pauses. A page of short paragraphs beats a dense legal schedule, and you can link to full terms for anyone who wants them.
Then remove every step between "yes" and a signed agreement. This is where Formlio fits. You build the proposal from blocks: the brief, a gallery of sketches, a timeline of phases, a pricing block with the fee by phase, and an agreement block where the client signs with an e-signature or a Slide-to-Approve button. It opens as a web page on any device, in your own fonts and colours.
A PDF goes into a black box. A Formlio document reports back: who opened it, what they read, when they signed. You get a notification when the client opens the proposal and can see which sections they spent time on. If they lingered on the fee table, call about the fee. If they went straight to the sketches, talk about the design. Follow up when they are reading, not a week later.
As for AI, treat it as an editor. It can help you turn rough notes into clean paragraphs or suggest a clearer order for your terms. It cannot read a site, weigh a planning risk or decide what your time is worth.
Before you send it
The brief reads like the client wrote it
Their goals, their words, plus the insight that shows you looked closely.
Every fee has a deliverable
Each phase lists what the client receives and when the payment falls due.
Exclusions are plain sentences
Each item says who pays and how extra services are charged.
The next step is obvious
The client can approve or sign at the end of the document without printing anything.
Questions
Frequently asked questions
Not plans you could submit or build from. It can describe layouts and help with text, but measured drawings, structural logic and planning judgement still need an architect and proper drawing software.
Typically schematic design, design development, construction documents, help with bidding, and construction administration. Surveys, specialist consultants, statutory fees and extra revisions are usually excluded or charged separately.
Either can work. A fixed fee per phase is easier for homeowners to understand; a percentage suits projects where the budget is still moving. Whichever you choose, show how the fee splits across phases.
Planning and building control fees, surveys, structural and other specialist consultants, detailed cost estimates, revisions after sign-off and site visits beyond an agreed schedule, each written as a plain sentence.
Long enough to cover the brief, your thinking, the phased scope, the fee and the terms, and no longer. Cut generic firm history and keep only past projects that match the job.
Follow up when the client is actually reading it, and talk about the section they spent time on. With Formlio you get a notification when the proposal is opened and can see which sections held their attention.
Template
Send a proposal clients can approve
Build your brief, phases and fees from blocks, share them as a link, and let the client sign inside the document.