Lighting and Furniture Layout: How to Plan Them Together

Lighting is often fixed while the walls are still being plastered, long before anyone decides where the sofa or dining table will stand. The result is familiar: a pendant hanging over empty floor, a downlight shining straight into a seated guest's eyes, a reading chair with no socket nearby.

Architecture, furniture and light work as one system. The architecture sets the fixed points, the furniture decides where people sit and walk, and the light should follow the furniture. This guide gives a planning order and typical measurements you can use on your own floor plan.

Start with what cannot move

Before choosing a single fixture, draw the room to scale and mark the elements that are fixed:

• windows and glass doors, including which direction they face and where the afternoon sun falls;
• doors, their swing, and the main walking routes between them;
• ceiling height, beams, dropped sections and any change in ceiling level;
• columns, radiators, built-in cupboards and existing sockets.

These points decide where large pieces can go. A sofa usually faces the main view or the fireplace, with its back to a wall or to a walking route, and never reaches into a door's swing. Keep main routes about 90 cm wide; our article on how circulation patterns influence furniture placement covers this in more detail.

Place the furniture first, then the light

Once the layout is fixed, every ceiling outlet and floor socket can be placed relative to a real piece of furniture rather than to the centre of the room.

Over the dining table

A pendant belongs over the centre of the table, not the centre of the room. A common rule is to hang it 75–85 cm above the tabletop, so seated people can see each other under it. For a long rectangular table, a linear fixture or a row of two or three pendants works well; keep the fixture to roughly half or two-thirds of the table length, ending at least 15 cm inside each end. If you are choosing from our dining tables, settle the model and size, for example a Serenity dining table, before the electrician fixes the ceiling point.

Around the sofa and armchairs

Seating needs light from the side, not from above. Plan a table lamp or floor lamp at one or both ends of the sofa and next to every armchair meant for reading. A reading lamp works when the bottom of its shade sits around 100–110 cm from the floor, at the shoulder of a seated person. A Lichfield armchair placed in a corner needs its own socket within a metre. If the sofa stands in the middle of the room, put a floor socket under it so no cable crosses the floor.

Three layers, each with a job

A room lit by one ceiling fixture looks flat. Plan three layers and put each on its own switch or dimmer:

• Ambient light fills the room evenly: indirect light from a ceiling cove, wall lights or a few wide-beam downlights.
• Task light serves a specific activity: the pendant above the table, reading lamps beside the seating, light over a kitchen worktop.
• Accent light picks out surfaces and objects: a painting, a stone wall, the top of a sideboard.

Recessed spots should not sit directly above a seated head; place them over walking routes or about 30–60 cm out from a wall, where they light the wall rather than the people. A sideboard such as the Ricco sideboard makes a natural accent point: one spot aimed at the wall above it, or a lamp on top, gives the room a second focus after dark.

How light changes leather, wood and marble

The same material can look very different under different lamps, so judge finishes under the light they will live with.

• Colour temperature. Warm white (2700–3000 K) keeps leather browns, cognac shades and warm wood tones rich. Neutral white (4000 K) suits kitchens and work areas but can make warm leathers look grey and flat.
• Colour rendering. Lamps with a CRI of 90 or more show leather and fabric colours more faithfully.
• Angle. Light that grazes a surface at a low angle exposes texture. That is attractive on a stone wall or a grained leather, but it also shows every unevenness in plaster.
• Gloss. Polished marble and lacquered tops reflect downlights as bright dots. Aim spots off-axis or use diffused fittings above them.

Low ceilings and compact spaces

Where the ceiling is low, a pendant can block sightlines or simply get in the way. The light then moves into the ceiling itself: recessed linear fittings, a lit panel or a cove that throws light upward. On yachts this is the norm. The dining area of the AL REEM yacht, one of the Bilgin Yachts projects Sitdesign worked on, sits under a mirrored, lit ceiling instead of a hanging fixture, which keeps the space open while still marking the table as the centre. The same idea works in compact apartments: a lit ceiling recess sized to the table or the seating group gives that area its own outline.

A planning order that avoids rework

1. Draw the room to scale with all fixed architectural points.
2. Place the furniture at its real dimensions. Our catalogue has standard models; custom dimensions are available on request.
3. Position ceiling outlets over the furniture they serve, not over the centre of the room.
4. Add wall and floor sockets for every lamp position.
5. Decide colour temperature and dimmers for each layer.
6. Check upholstery colours under your planned light before ordering.

The last step is easy to skip and hard to fix later. Every Sitdesign piece is handmade in our own factory in Büyükçekmece, Istanbul, and our genuine leathers come in 76 colours, so seeing a sample under your own lamps settles the decision quickly.

Send us your floor plan and the pieces you are considering through our contact page, and we will reply with dimensions, leather samples on request and a quote.