How to Brief an Architect for a London Renovation: What to Prepare and What to Expect

The relationship between a client and an architect begins with a brief. A good brief is not a detailed specification — it is a clear account of what the client wants to achieve, how they live, what they value, and what constraints apply. A well-prepared brief saves design time, reduces abortive work, and produces an architecture that genuinely reflects the client's needs rather than the architect's assumptions.

Here is how to prepare a useful brief for a London renovation project.

What a brief is for

A brief is not a set of instructions for the architect to follow. An architect is not a technical draftsperson who converts client requirements into drawings — they are a design professional whose value lies in interpreting and responding to a brief creatively. The brief is the input that enables this response.

A brief that over-specifies — "I want a kitchen extension with bi-fold doors, a kitchen island 2.4m long, a large rooflight, and a Belfast sink" — removes the opportunity for the architect to consider whether bi-fold doors are the right choice for this orientation, whether an island of that size suits the space, and whether a different rooflight position would serve the room better.

A brief that under-specifies — "I want to improve the house" — gives the architect nothing to respond to.

The ideal brief is somewhere between: specific about the outcomes required, open about the means of achieving them.

Section 1: How you live

The most important section of a brief is an honest account of how the household actually uses the space they have — and how they would like to use the space they want.

Useful information to include:

Household composition: How many people live in the house? What are their ages? How long do you expect to stay in the house?

Working from home: Does anyone work from home regularly? How many people, and what does that work require (desk space, video calls, privacy from background noise)?

Cooking and entertaining: How often do you cook? Formally or informally? Do you entertain regularly — and if so, at what scale? Do you want kitchen and dining to be in the same space or separated?

Children and guests: Do you have children? How old? Do you have regular overnight guests? Is guest accommodation important?

Storage: What do you currently lack in terms of storage? Where does clutter accumulate and why?

Outdoor space: How important is outdoor space to your daily life? Do you want a connection between inside and outside, or do you use outdoor space independently?

Section 2: What you want to change

Describe, as specifically as you can, what is wrong with the current house and what you want to fix.

"The kitchen is too small and dark, and is separated from the dining room so that whoever is cooking is isolated from the family. I want to connect them and bring more light into the kitchen area."

"The master bedroom has no dedicated dressing area. I want to create one, either from the small bedroom adjacent or from a new addition."

"The house has no usable outdoor space at ground level. I want to create a garden or terrace that is accessible directly from the main living area."

"The house feels cold and expensive to heat. I want to improve insulation and heating while retaining the period character of the rooms."

This kind of clear problem statement is more useful to an architect than a list of rooms to add.

Section 3: Priorities and trade-offs

Every renovation involves trade-offs. The client who is explicit about their priorities helps the architect make decisions in the right direction.

Quality vs cost: What matters more — the quality of the finish, or staying within a specific budget? If the budget is fixed, how should the architect manage quality if costs rise?

Programme vs disruption: How important is completing on a specific date? If programme is critical, there may be cost implications. If the client can accommodate a longer programme, a more phased approach may be possible.

Planning risk: How important is it to avoid planning applications? A design within permitted development rights can be built more quickly, but may be spatially more constrained. Are you willing to pursue planning permission if it would deliver a significantly better outcome?

Flexibility vs specificity: Do you want a flexible brief that allows the architect significant creative latitude, or is there a specific outcome you require?

Section 4: Character and aesthetic

Architects are not mind-readers. If you have a strong aesthetic preference — or a strong aversion — say so explicitly.

Reference images are useful, but explain what you like about them. "I like this because of the way it connects to the garden, not because of the specific materials" is more useful than a photograph with no context.

If you have visited houses that you have found inspiring, describe them. If there are architects whose work you admire, mention them.

Section 5: Constraints

Be explicit about the constraints the architect must design within:

Budget: State a figure or a range. An architect who does not know the budget will design to their own assumptions, which may be significantly different from yours. A budget that is stated as a range (£300,000–400,000) is more useful than an open-ended instruction to "make it cost-effective."

Statutory constraints: Are there known planning constraints? Is the property listed? In a conservation area? Have there been previous planning refusals on the property?

Timeline: Is there a target completion date? Are there events that constrain the start of construction (children's school terms, planned absence, neighbouring works)?

Physical constraints: Are there known structural issues? A basement that has leaked? A party wall that has been contentious? A tree with a TPO that affects what can be built?

What to expect from the architect in return

A good architect will respond to a well-prepared brief by:

• —Asking questions where the brief is unclear or where their experience suggests an assumption should be tested
• —Producing initial concept options that reflect a genuine interpretation of the brief — not just one option, but typically two or three that explore different approaches to the core challenge
• —Being honest about what is achievable within the budget and the planning constraints before committing to a design direction

An architect who does not ask questions, produces a single option with no alternative thinking, and does not raise cost or planning risks early is not providing the advisory service that the fee is for.

ASAAN's involvement at the briefing stage

ASAAN regularly participates in the briefing stage of projects we will subsequently build, providing input on construction cost, programme, and buildability that shapes design decisions before they become expensive to change.

If you are in the early stages of planning a renovation and want construction input alongside design advice, contact us.