---
title: "Writing a room brief"
url: https://aiinterior-design.com/blog/how-to-make-your-room-into-your-dream-room/
description: "The six lines a written room brief needs so that a generated scheme can be judged against something rather than merely admired."
published: 2026-07-07
updated: 2026-07-07
---

# Writing a room brief

Published 2026-07-07

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- [Index](https://aiinterior-design.com/categories/)

Rooms › [Writing a room brief](https://aiinterior-design.com/categories/#rooms)

Brief at a glance

| Lines | 6 |
|---|---|
| Written | before first render |
| Maps to | mask + conditions |
| Failure lines | fixed, light |
| Closing line | one checkable test |

The most useful document in a room project is a short one, written before any image exists. Six lines are enough, and each of them maps onto something a render can actually be conditioned on or checked against.

## Why the brief comes first

A generated image is persuasive before it is correct. Without a written test, the only question left is whether the picture is attractive, and that question is always answered yes by the pictures that are easiest to produce. A brief written before the first render turns the exercise back into a decision: this scheme either meets the six lines below or it does not.

The six lines of a written room brief, filled in before any image is generated.

## The six lines

**Use**: Who is in the room, doing what, at which hours. A room used for reading in the evening and a room used for homework after school are not the same room, whatever they look like.

**Fixed**: What cannot move: window and door openings, radiators, sockets, fitted joinery, the direction the floorboards run. These become the *keep* mask later.

**Keep**: What stays because it is liked or already paid for. Naming it early stops a render quietly deleting it and stops you falling for a scheme you cannot afford to reach.

**Light**: Which direction daylight arrives from, and when. This single line catches more impossible renders than any other.

**Constraint**: Rented or owned, the shape of the budget, noise, pets, children, anything that rules out a material outright.

**Test**: One sentence that decides whether the scheme worked. It should be checkable by someone else standing in the room.

## Turning the brief into conditions

Each line maps onto something the pipeline can act on. *Fixed* becomes the keep mask. *Light* becomes the direction the render is conditioned on. *Use* becomes the clearances and the seating arrangement. *Constraint* rules out materials before they are requested rather than after they are admired. The [pipeline entry](https://aiinterior-design.com/design/) sets out where each of these enters the chain.

## Judging what comes back

Read the render against the brief line by line, in the order written. Most schemes fail on *Fixed* or *Light*, and both failures are visible in seconds once you are looking for them. A scheme that passes all six is worth measuring properly; a scheme that fails one is worth regenerating rather than arguing with.

## See also

- [The photo-to-render pipeline](https://aiinterior-design.com/design/)
- [Living room layout](https://aiinterior-design.com/blog/how-to-decorate-a-living-room/)
- [Glossary](https://aiinterior-design.com/glossary/)

Categories:

- [Rooms](https://aiinterior-design.com/categories/#rooms)