Understanding Your Architect's Appointment Terms

Before any design work begins, you and your architect should sign a formal appointment agreement. This document defines the relationship — what the architect will do, what you'll pay, who owns the designs, and what happens if things go wrong. Yet many homeowners sign these agreements without really reading them, or worse, proceed without any written agreement at all.

Here's a plain-English guide to what you should expect, what to look for, and what should concern you if it's missing.

Why a Written Agreement Matters

An architect appointment is a contract. Without a written one, you're relying on an implied contract, which means disputes come down to "he said, she said" — and the resolution is expensive, slow, and uncertain.

A proper agreement protects both sides. It gives you clarity on what you're paying for and a mechanism to resolve problems. It gives the architect clarity on their scope and a framework for getting paid. For projects in north London where construction budgets routinely exceed £200,000, operating without a written appointment is reckless.

The RIBA Standard Conditions of Appointment

Most UK architects use some version of the RIBA (Royal Institute of British Architects) standard appointment documents. The most common for residential projects are:

• RIBA Concise Agreement — designed for smaller domestic projects with a single-stage fee arrangement.
• RIBA Standard Agreement — more detailed, suitable for larger or more complex residential projects.
• RIBA Domestic Professional Services Contract — specifically tailored for consumer clients on domestic projects.

These are well-drafted, balanced documents developed over decades. They're not perfect, but they're fair to both parties. If your architect proposes their own bespoke terms instead of an industry-standard form, read them with extra care — bespoke terms sometimes favour the architect disproportionately.

Some architects use alternative standard forms, such as the ACA (Association of Consultant Architects) form. These are also reputable. The key point is that a recognised standard form has been tested, debated, and refined — a hand-typed letter of engagement may have gaps.

Scope of Services: The Most Important Clause

The scope definition is the heart of the agreement. It specifies exactly which services the architect will provide, usually referenced to the RIBA Plan of Work stages (0–7). Every task the architect will perform should fall within this scope, and anything outside it is either excluded or subject to an additional fee.

Read the scope carefully and check:

• Which stages are included? A common arrangement is for the agreement to cover Stages 0–3 (feasibility through planning), with construction stage services (Stages 4–7) covered by a separate appointment or an extension of the first.
• What deliverables will you receive at each stage? For example, at Stage 2, you might expect concept floor plans, elevations, and a 3D visualisation. At Stage 4, you should receive full construction drawings, a detailed specification, and tender documents.
• What's explicitly excluded? Structural engineering, party wall matters, interior design, landscape design, and specialist surveys are commonly excluded. Make sure you know what you'll need to procure separately.
• How are changes to scope handled? If you decide midway through design that you also want a loft conversion, the architect is entitled to adjust the fee. The agreement should explain how this works.

Vague scope definitions are dangerous. "Design services for a rear extension" is not enough. You need specificity about what design services means in practice.

Fee Basis and Payment Terms

The agreement should clearly state:

• The total fee or fee basis — whether it's a fixed sum, a percentage of construction cost, or an hourly rate, and what it covers.
• When payments are due — typically at stage milestones or monthly intervals. The agreement should specify the exact trigger for each payment.
• Payment period — how many days you have to pay after receiving an invoice (14–30 days is standard).
• What happens if you don't pay — most agreements allow the architect to suspend services if an invoice remains unpaid beyond a specified period. This is standard and fair.
• VAT — whether the fees quoted include or exclude VAT. Most architect practices in London are VAT-registered, so if fees are quoted net, add 20%.
• Expenses — whether printing, travel, planning application fees, or other disbursements are included in the fee or charged separately.

Check whether the agreement includes a mechanism for fee increases. Multi-year projects may include an annual inflation adjustment, typically linked to CPI or a similar index. This is reasonable for long projects but should be transparent.

Copyright and Intellectual Property

This clause catches many homeowners by surprise. Under UK copyright law, the architect owns the copyright in their designs — the drawings, plans, specifications, and other documents they produce. You receive a licence to use those designs for the agreed purpose (typically, building the project and maintaining it afterwards), but you don't own the designs outright.

In practice, this means:

• You generally cannot take the architect's drawings and give them to another architect to develop without the original architect's consent.
• If the appointment is terminated before the project is complete, the architect can restrict your use of their design work.
• The licence to use the designs is typically conditional on all fees being paid. If you owe the architect money, they may withdraw the licence.

This is standard practice, not something unusual or predatory. But you should understand it, particularly if there's any chance you might change architects mid-project. Some agreements allow for a broader licence (including the right to use designs with a replacement architect) in exchange for a fee — this is worth negotiating at the outset rather than during a dispute.

Professional Indemnity Insurance

Professional indemnity (PI) insurance protects you if the architect makes a negligent error that causes you financial loss — for example, a design defect that requires expensive remedial work.

Your architect's appointment should state:

• The level of PI cover carried — for residential projects in London, a minimum of £500,000 is typical, with £1,000,000 or more for larger projects.
• The obligation to maintain cover — the architect should be required to maintain PI insurance for a specified period after the project completes, typically six years (matching the limitation period for contractual claims) or twelve years if the contract is executed as a deed.
• Each and every claim vs aggregate — "each and every claim" cover means the full limit applies to each separate claim, while "aggregate" means the limit is shared across all claims in the policy year. "Each and every claim" is better for you, but many policies are aggregate.

If the agreement doesn't mention PI insurance, ask why. An architect without PI insurance is a significant risk for any project of meaningful value.

Termination Clauses

Both you and the architect should have the right to end the appointment, subject to reasonable conditions. Standard agreements typically allow:

• Termination for cause — either party can terminate if the other commits a material breach (e.g., non-payment by the client, persistent failure to perform services by the architect) and doesn't remedy it within a specified notice period.
• Termination for convenience — you can usually terminate the appointment at any time for any reason, provided you pay for work done to date and, sometimes, reasonable costs arising from the termination.
• Suspension — some agreements allow the architect to suspend services if invoices remain unpaid, as an intermediate step before termination.

Check what happens to copyright and the design licence if the appointment is terminated. Under RIBA standard forms, the licence to use designs is typically conditional on all outstanding fees being paid. This means you can't sack the architect, refuse to pay the final invoice, and then use their drawings to build the project with someone else.

Dispute Resolution

How will disagreements be resolved if informal discussion fails? Standard agreements usually specify one or more of:

• Mediation — an independent mediator helps both parties reach a voluntary agreement. This is quick, relatively cheap, and confidential. Most RIBA forms specify mediation as a first step.
• Adjudication — a faster, more formal process where an independent adjudicator makes a binding (in the short term) decision. Common in construction contracts.
• Arbitration — a private tribunal process that produces a binding and final decision, as an alternative to court proceedings.
• Litigation — traditional court action, which is slow, expensive, and public.

A good agreement includes a multi-step process: informal discussion first, then mediation, with arbitration or litigation as a last resort. Beware of agreements that jump straight to litigation in a specific jurisdiction — this may be designed to discourage you from pursuing legitimate complaints.

What Should Worry You if It's Missing

If any of the following are absent from your architect's proposed terms, raise them before signing:

• No written scope of services — without this, disputes about what was and wasn't included are inevitable.
• No mention of PI insurance — this exposes you to unrecoverable losses if something goes wrong.
• No termination provisions — you need the right to walk away, with clear consequences.
• No dispute resolution mechanism — if the only recourse is court action, the cost of resolving a dispute may exceed the value of the claim.
• No obligation to comply with statutory requirements — the architect should warrant that their designs will comply with planning legislation, Building Regulations, and other applicable laws.
• No payment schedule — paying the entire fee upfront, or having no clarity on when payments fall due, creates unnecessary risk.
• No CDM reference — under the Construction (Design and Management) Regulations, the architect may need to act as principal designer. The agreement should address this.

Before You Sign

Read the agreement. All of it. It may be dry, but it's shorter than you think — most residential architect appointments are ten to twenty pages. If you don't understand a clause, ask the architect to explain it. If they can't explain it clearly, that's a concern in itself.

If the fees and scope are significant, consider having a solicitor review the terms. This costs a few hundred pounds and can prevent disputes worth thousands.

We help homeowners across Hampstead and north London connect with architects who operate professionally and transparently. A well-structured appointment agreement is one of the clearest indicators that you're working with someone who takes their professional responsibilities seriously — and who will take your project seriously too.