Distribution: the functional layout
A lighting distribution layout focuses on providing the required amount and spread of light for each area. It considers fixture quantities, spacing and suitable illumination levels so the space is properly lit for its function. It is the right level of service when the brief is essentially "make sure every area is properly lit" — a warehouse, a back-of-house corridor, a straightforward office floor, or a residential project where the interior decisions are already made.
Design: the whole visual result
Full lighting design goes further. It considers furniture, architectural details, finishes, focal points, circulation, different activities and the visual hierarchy of the space. Beam angles, layers of light and fixture characteristics are selected to create both performance and atmosphere. It is the right level of service when the space has to do more than be lit: a reception that carries a brand, a restaurant with a specific mood, a home where the same room hosts three different evenings.
| Question | Distribution layout | Full lighting design |
|---|---|---|
| Is there enough light for the task? | Yes | Yes |
| How many fittings, and where? | Yes | Yes |
| Which surfaces should be emphasised? | Not usually | Yes |
| How does the room read in the evening? | Not usually | Yes |
| Are there separate ambient, task and accent layers? | Not usually | Yes |
| Does the lighting follow the furniture plan? | Only loosely | Yes |
A comparison of scope between two service levels described in the approved Lighting Design & Engineering page. It is not a quality ranking: many projects are correctly served by a distribution layout.
The practical difference on site
A distribution layout usually needs the architectural plan and the intended use of each area. A full design needs more: the furniture layout, the finishes, the materials, and a conversation about how the space will be used at different times. That is not bureaucracy — a lighting plan drawn before the sofa position is known will place a downlight exactly where someone will sit.
The cost of choosing the lighter service is rarely a technical failure. It is a room that is correctly lit and still does not feel like anything.
Common mistakes
- Asking for a layout, receiving one, and then expecting it to deliver atmosphere it was never scoped to create.
- Issuing a lighting plan before the furniture plan exists, then discovering the conflict on site.
- Treating a full design as a luxury in a space whose whole purpose is how it feels.
- Changing the ceiling, the finishes or the furniture after the lighting is set out, and keeping the original positions.