In most open plan living spaces, a floor lamp between about 150cm and 190cm tall works best, with a shade or head that is large enough to hold its own against the scale of the room. Arc lamps of around 180cm to 220cm are useful when you want light to reach over a sofa from the side, while slimmer lamps of 150cm to 170cm suit reading corners and smaller living zones. The right size depends less on the floor area of the whole space and more on the size of the zone the lamp is lighting, the height of your ceiling and the furniture it sits beside.
Open plan rooms can make lamps look smaller than they are, so it is worth measuring rather than guessing. Our modern floor lamps UK collection lists the height, shade width and base dimensions for each design, which makes comparison easier. Thinking of the floor lamp as one element of a wider modern lighting UK sale plan for the whole space also helps. Here is a practical way to work out the right size.
In a separate living room, a floor lamp is seen against four nearby walls and a sofa. In an open plan space, it is seen across a much larger volume, often against a kitchen, a dining table and a run of glazed doors. A lamp that would look generous in a small sitting room can look lost here.
Open plan rooms also tend to be lit by a mixture of pendants over the island, spotlights in the kitchen and perhaps a feature light over the dining table. The living area often has the least lighting, which means the floor lamp has an important job: to define the living zone and make it feel like a room within a room.
The most useful measurement is the size of the seating area the lamp will serve. In most homes, that zone is defined by the sofa, a coffee table and a rug. Measure the length of the sofa and the overall depth of the zone from the back of the sofa to the far edge of the rug.
As a rough guide:
Ceiling height varies a great deal across UK homes. Modern extensions often have higher ceilings or sloping roofs with roof lights, while open plan layouts created by knocking through in older terraces keep the original ceiling heights, which may differ between front and back.
As a guide, leave at least 30cm to 40cm between the top of the lamp and the ceiling. In a room with a standard ceiling of around 2.4m, a lamp up to about 190cm looks comfortable. Where the ceiling is higher, you can go taller, and a taller lamp will help balance the vertical space. Under a sloping roof, measure at the exact spot where the lamp will stand.
The sofa is the anchor of most living zones, so the lamp should be in proportion to it. A useful rule is that the shade of a standard floor lamp should sit roughly at or just above seated eye level, usually somewhere around 110cm to 130cm from the floor for the lower edge of the shade. That keeps the bulb hidden and puts the light where you need it.
With a large L shaped sofa, the lamp often looks best in the corner of the L or at one end. Our modern corner sofas UK are popular in open plan homes precisely because their shape forms a natural boundary, and a well sized lamp in the corner anchors that boundary in the evening.
Arc lamps need more thought. Measure from the point where the base will stand to the centre of the area you want to light, then check the reach of the arc. Most arc lamps extend between 150cm and 200cm horizontally. The shade should hang at least 180cm above the floor if people will walk under it, or lower if it sits over a seat or a coffee table where nobody passes.
A rug is one of the best tools for defining a living zone in an open plan space, and it also gives you a useful reference for the lamp. Ideally, the front legs of the sofa and any chairs sit on the rug, and the lamp base sits either on the rug or just at its edge. That keeps the lamp visually within the zone rather than floating in the space around it.
If you are choosing a rug and lamp together, our rugs UK sale range includes larger sizes suited to open plan living areas. A larger rug generally allows a larger lamp, as the zone it defines is more generous.
Two lamps of the same height can look very different in scale. A slim stem with a small shade reads as light and delicate. A thick column, a wide drum shade or a sculptural base reads as substantial. In a large open plan space, lamps with more visual weight tend to hold their own better.
If you prefer slender designs, consider using two lamps rather than one, or grouping a floor lamp with a large plant or a tall piece of furniture so that together they have enough presence. Alternatively, choose a slim lamp with a generous shade, which keeps the outline light but gives the lamp a stronger silhouette.
For most open plan living areas, one well sized floor lamp is enough to anchor the seating, supported by a table lamp or two. In larger spaces, or where the living zone is long and narrow, two floor lamps placed at opposite ends give a more even light and a balanced look.
Consider how the light flows through the whole space in the evening. When the kitchen lights are dimmed, the living area should still feel inviting. Our article on how UK households use floor lamps looks at the different roles a floor lamp can play, which is helpful when planning more than one. If your open plan space spans an older house and a newer extension, our guide to UK ceiling heights by property age and lighting explains why lamp heights may need to differ from one end of the room to the other.
Open plan spaces are often busy routes, with people moving between the kitchen, the garden doors and the living area. Check that the lamp base does not intrude into a walkway. Weighted round bases of 25cm to 40cm across are typical for standard lamps, while arc lamps usually need a heavier, larger base for stability, often a block of marble or stone.
Plan the lamp near a socket. In open plan spaces, sockets are sometimes far from the seating, and a cable running across the floor is both untidy and unsafe. If you are renovating, a floor socket beneath the sofa area is worth considering.
The right floor lamp for an open plan living space is one that is scaled to the zone it lights, comfortable with the ceiling height and in proportion to the sofa beside it. Measure carefully, think about visual weight as well as height, and do not be afraid to go a little larger than you would in a separate living room. Done well, the lamp will give your living area its own identity within the wider space.
Our lighting, sofas and rugs come with free delivery to most UK mainland postcodes. To see how the rest of your open plan space could come together, explore the full collection at Furniture in Fashion.
Most standard floor lamps beside a sofa work well at around 150cm to 175cm, with the lower edge of the shade at or just above seated eye level.
Yes, an arc lamp can reach over a sofa from the side and define the seating area without needing a ceiling fitting. Check the reach, headroom and base size before you choose.
It can, if it crowds the ceiling or blocks a walkway. In open plan spaces, however, lamps are more often too small than too large.
One is usually enough for a compact zone. For a long or large living area, two lamps at opposite ends give more even light and a better sense of balance.
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