Most redecorating projects go wrong in the same place, and it is not the paint colour. It is that nobody wrote down what the room was for before deciding what it should look like. Six weeks later there is a beautiful sofa in a room that still has nowhere to put the shoes.
A design brief fixes this. It is a page of plain writing that states what the room has to do, what has to stay, what the budget is and what you actually like. Professional designers start with one. Almost nobody redecorating their own home does.
What goes in a brief
Six sections, none of them long:
- Function. Everything the room must accommodate. Not "living room" — "two adults reading, a child doing homework, guests twice a month, and storage for board games".
- Fixed constraints. What cannot change: the radiator position, the awkward alcove, the floor you are not replacing, the rented-flat rules.
- Existing pieces. What is staying, with dimensions and colours. This is the section that most often kills a scheme late.
- Light. Which way the windows face and when the room is used. A north-facing room used in the evening is a completely different problem from a south-facing one used at midday.
- Budget. A real number, split into must-spend and nice-to-have.
- Taste. Five images you like and, more usefully, a sentence on why for each.
Where AI helps — and where it does not
AI is genuinely useful for three parts of this: interrogating your requirements, naming what you like, and generating options you would not have considered. It is not useful for deciding, and it cannot see your room.
1. Interrogating the requirements
Describe the room and what you want, then ask to be questioned rather than answered: "ask me ten questions a designer would ask before suggesting anything." The questions are the value. They surface the things you have not thought about — where people put coats, whether the television is a fixed point, how the room works when two people want different things from it at once.
2. Naming what you like
Most people can point at pictures and cannot say what connects them. Describe five rooms you like in your own words and ask what they have in common. The answer — "you are consistently drawn to warm neutrals, visible wood grain and low furniture" — is the vocabulary you need to shop with and to brief a decorator with.
3. Generating options
With the constraints written down, ask for three different approaches to the same room, each with a stated trade-off. Tools built for this, such as an AI interior designer, will work from a photo and produce visual variations, which is a faster way to discover that you dislike an idea than buying it.
Treat the output as a mood board, not a plan. Generated images routinely contain furniture that does not exist, proportions that would not fit, and lighting that could not happen in your room.
The reality checks it cannot do
| Check | How |
|---|---|
| Does the furniture fit? | Tape the footprint on the floor and live with it for a week |
| Does the colour work here? | Large sample boards, viewed morning and night |
| Can the wall take it? | Find out before, not during |
| Is it legal in a rental? | Read the agreement |
| Does it need a trade? | Anything electrical or structural |
The finished brief
One or two pages. Keep it where you can see it while shopping, because its main job is to stop you buying the beautiful thing that does not serve any of the six sections. If you hire a decorator, hand it over on day one — the good ones will be pleased, and it usually pays for itself in avoided revisions.
The brief takes an evening. The redecoration takes months and costs real money. It is a sensible ratio.