Writing an Interior Design Brief for a London Renovation: How to Communicate What You Want

Why the Brief Matters

Interior designers are skilled at translating vague preferences into resolved spatial and material proposals, but this skill has limits. A designer who is told "something sophisticated but warm, not too contemporary, not too traditional" will produce work that is competent and safe — the safe middle of a range they believe the client occupies. A designer who is told "I want the drawing room to feel like the library of a country house, with dark walls, deep upholstered seating, and a fireplace that actually gets used, but with contemporary lighting and no chintz" will produce work that is specific, personal, and aligned.

The difference is not merely aesthetic. A clear brief reduces the number of design rounds required to reach an approved concept, which reduces fees. It reduces the risk of expensive changes of direction mid-project. It protects the client from work they did not want and protects the designer from being asked to produce it. And it establishes, from the beginning, a shared vocabulary between client and designer that makes every subsequent conversation more productive.

What a Good Brief Contains

The household: Who lives in the property, how they use it, and how they expect to use it after renovation. The number of adults and children, their ages, their daily routines, their hobbies. Whether the property will be a primary residence or a secondary home. Whether it will be let or sold in the medium term. Whether pets are part of the household. These facts determine durability requirements (a family with young children and a large dog needs different floors and fabrics than a couple who travel frequently), room allocation (how many bedrooms, whether a playroom or study is required), and the practical priorities for each space.

The must-haves: Specific requirements that are non-negotiable. A dedicated home office with video-conferencing capability. A kitchen island with seating for at least four. A master bathroom with a freestanding bath and a separate walk-in shower. A guest bedroom with an en suite. A utility room accessible from the back entrance. Must-haves define the programme — the list of spaces and their minimum requirements — from which the design flows.

The aesthetic direction: This is the hardest part of the brief to articulate but the most important. The most effective approach is to use reference images — photographs of rooms, buildings, hotels, restaurants, or objects that provoke a positive response — combined with a description of the emotional quality being sought.

Reference images do not need to be literal: a client who shows images of a Japanese ryokan, a Palladian country house, and a 1970s Italian apartment may not want any of those things directly, but they reveal something consistent — perhaps a preference for material authenticity, precise detailing, and the absence of clutter. A good designer will extract the common thread.

Equally useful is a list of what the client does not want: the aesthetic territory to be avoided. "Nothing that looks like a hotel lobby" or "no grey walls or grey floors" or "not minimalist" eliminates a significant amount of possible design territory and clarifies the target range.

Budget: The brief should state the budget, or at least the budget range. A designer who does not know whether the budget for a bathroom is £20,000 or £80,000 cannot specify appropriately. Clients who are reluctant to disclose budget for fear of the designer "spending up to it" misunderstand how design works — a good designer will produce the best possible outcome within the stated budget, and the stated budget will prevent them from spending time on specifications that are unaffordable.

Timeline: Key dates and constraints. A purchase completion date. School start dates that determine when bedrooms must be functional. A planned event (a significant birthday, a Christmas, an expected arrival) that creates a hard deadline for completion. Timeline constraints affect how the project is programmed and what trades can be used.

Room-by-Room Priorities

For a major renovation, the brief should address each room individually, noting:

• —Primary use: What the room is principally used for and by whom
• —Secondary use: Occasional or secondary functions (the guest bedroom that doubles as a study; the kitchen that is also the primary family room)
• —Specific requirements: Particular fixtures, fittings, or features that are required
• —Atmosphere: The quality of the room — the level of formality, the degree of comfort, the relationship to natural light
• —Existing elements to retain: Any existing features (a fireplace, a view, an original floor, a piece of furniture) that should be incorporated into the design

The level of detail need not be the same for every room. A client who has strong views about the kitchen but is content to leave the guest bedrooms largely to the designer's judgement should say so — this calibrates where the designer's energy should be directed.

Reference Images and Mood Boards

A curated collection of 20–40 reference images, organised by room or by theme, is the most efficient way to communicate aesthetic preference. Pinterest boards, screenshots from design publications, photographs of hotels or restaurants visited, images of specific materials or products — all contribute to a visual vocabulary that the designer can interpret.

The images should be accompanied by notes explaining what the client responds to in each image: "the proportions of the window, not the colour scheme", "the way the books are arranged, not the overall style", "the texture of the plaster, not the furniture". Without annotation, a designer cannot know whether a client who pins a photograph of a dark panelled room wants dark panelling or simply responded to the mood of the space.

The Brief as a Living Document

The brief should be written before the first substantive meeting with the designer, but it should also be treated as a working document that evolves through the early design conversations. The first design presentation will reveal aspects of the brief that were unclear or that the client reconsiders in the light of seeing design proposals; the brief should be updated to reflect these revisions.

A brief that is finalised and agreed in writing at the end of the concept design stage — after the first round of design proposals has been reviewed and the direction refined — serves as the reference document for all subsequent design decisions. Any request to change direction that is not consistent with the agreed brief is, in effect, a change instruction and should be treated as such in terms of programme and fee implications.

What the Brief Does Not Determine

A brief determines direction and priorities, but not solutions. Clients who specify too precisely — "I want a Calacatta marble floor in a herringbone pattern, 150mm × 300mm blocks, with a 5mm joint in grey grout" before the designer has been appointed — leave the designer no room to exercise their skill or to propose a better solution. The brief should define what the space needs to feel like and what it needs to do; the designer's role is to determine how best to achieve that.

The most productive brief-and-brief relationship is one where the client has articulated their preferences and priorities with precision and honesty, and has then trusted the designer to translate those preferences into spatial and material proposals that may not be exactly what the client imagined but are exactly what they needed.