Corner and U-Shaped Sofas: Measuring and Choosing the Right Layout

A corner sofa is often the largest single thing you will ever buy for a room, and it is also the piece most likely to be ordered the wrong way round. Choose well and it becomes the sociable, sink-in heart of the home; get the measurements or the orientation wrong and you are left with a sofa that blocks a doorway or faces the wrong wall. This guide walks through the decisions in the order we would make them ourselves: room first, layout second, sofa last.

Start with the room, not the sofa

Before you browse, sketch the room on paper with the doors, windows, radiators, sockets and the TV or fireplace marked in. The corner you instinctively want to fill is not always the right one. A corner sofa works best where it creates a natural conversation area without cutting across the routes people use to walk through the room.

Think about where light comes from too. Placing the long side of the sofa with its back to a window can leave faces in silhouette in the evening, while tucking it into the darkest corner can make a room feel smaller. Masking tape on the floor is the simplest and most honest test: mark out the footprint, live with it for a day or two and see whether you keep tripping over it.

Corner, chaise or U-shape: which layout suits you?

L-shaped corner sofas have two seating sections meeting at a right angle. They are the most versatile option, fit neatly into the corner of a room and leave one side open so the space still flows.

Chaise-end sofas replace one arm with an extended footrest. They take up less floor space than a full corner, which makes them a good fit for smaller living rooms or open-plan spaces where you want somewhere to stretch out without building a wall of seating.

U-shaped sofas wrap around three sides and are made for families, film nights and entertaining. They create a cosy, enclosed zone, so they work best in larger rooms or as a room divider in an open-plan space, with the open end facing the focal point.

Left-hand facing or right-hand facing?

This is the question that causes the most returns in the furniture trade, so it is worth slowing down. Retailers describe orientation as it appears when you stand in front of the sofa and look at it. If the corner or chaise is on your left as you face it, it is left-hand facing (LHF). If it is on your right, it is right-hand facing (RHF).

The confusion comes from sitting down: once you are on the sofa, a left-hand facing chaise is on your right. Always check the product images and the retailer's own definition, because a few brands use the opposite convention.

If you are unsure, or you expect to move house in the next few years, a universal or reversible corner sofa takes the risk out of the decision, as the corner section can be fitted on either side. Many of the corner sofas and corner sofa beds in our sofa collection are offered in a universal configuration; the product page will always say so.

How to measure the room properly

Measure the wall lengths where the sofa will sit, then subtract space for anything that has to stay usable: radiators, sockets, a door swing or a window you want to open. As a rule of thumb, leave 80–90cm for main walkways, around 40–45cm between the front of the sofa and a coffee table, and a few centimetres of breathing room behind the back so it is not pressed against a radiator.

Depth is the measurement people forget. A deep, lounge-style seat is wonderful to curl up in, but it will project further into the room than you expect, especially on both arms of a corner. Compare the sofa's overall depth with the space in front of it, not just the length along the wall.

• Measure each wall the sofa will touch, at floor level.
• Note the positions of radiators, sockets and switches.
• Mark the footprint with masking tape, including depth.
• Check the walkway between the sofa and the nearest door.
• Stand where you would sit and check the view of the TV or fireplace.

Getting it through the door

A beautiful sofa that will not fit up the stairs is a miserable thing. The good news is that most corner and U-shaped sofas are delivered in sections that connect in the room; the catch is that every section still has to pass through the narrowest point of the route from the kerb to the living room.

Measure the width and height of the front door, any internal doors, the hallway and, crucially, the tightest turn on a staircase or landing. Then compare these with the packed dimensions of the largest section (usually the corner unit), not the dimensions of the assembled sofa. If the product page lists box sizes, use those; if it does not, ask us before you order and we will check with the maker.

Remember to allow for things that stick out: radiators in hallways, banister posts, a low ceiling at the turn of the stairs. Removing an internal door from its hinges for delivery day can buy you a surprising few centimetres.

Comfort, fabric and everyday life

Once the shape and size are settled, sit on as many styles as you can and pay attention to seat depth and height. Taller people generally prefer a deeper seat; if you like to sit upright to read or work on a laptop, a slightly firmer, shallower seat will serve you better. Scatter cushions can make a deep sofa feel more supportive, but they cannot make a shallow one feel more relaxed.

For busy homes, a tightly woven fabric in a mid-tone is far more forgiving than a pale, loose weave. If you would also like the sofa to earn its keep when friends stay over, a corner sofa bed gives you a guest bed without dedicating a room to it; our guide to sofa beds that are actually comfortable covers what to look for, and you can browse the full sofa bed collection here.

Styling a corner or U-shaped sofa

Large sofas look best when they are anchored. A rug that sits under at least the front legs of every section pulls the arrangement together and stops it floating; with a U-shape, aim for a rug large enough that all three sections rest on it.

Keep the coffee table in proportion. With an L-shape, a rectangular or oval table that follows the longer side is easy to reach from every seat. With a U-shape, a large square or round table, or a pair of nesting tables, keeps the centre usable. Add a floor lamp behind the corner for reading light, a side table at the open end, and you have a layout that works as hard on a Tuesday evening as it does when the whole family is round.

If you want to see how a generous U-shape looks, the Alaya Grey U-Shaped Corner Sofabed is a good example of the format.

Frequently asked questions

What does left-hand facing (LHF) mean on a corner sofa?

Left-hand facing describes the side the chaise or corner section sits on when you stand in front of the sofa and look at it. If the long end is on your left as you face it, it is left-hand facing. It is the reverse of how it feels when you are sitting on it, which is why it catches so many people out.

What is a universal corner sofa?

A universal (or reversible) corner sofa is designed so the corner or chaise section can be fitted on either side. It is a sensible choice if you are unsure of your final layout, or if you expect to move house and may need to switch sides later.

How much space do I need around a corner sofa?

As a guide, leave around 80–90cm for main walkways and roughly 40–45cm between the front of the sofa and a coffee table. Allow a little clearance from radiators and skirting so cushions and air can circulate.

Will a U-shaped sofa fit through my door?

Most U-shaped and corner sofas arrive in sections, but each section still has to pass through the narrowest point on the route. Measure the width and height of every door, hallway and stair turn, then compare these with the largest section's packed dimensions, not the assembled sofa.

Is a corner sofa or a U-shaped sofa better for a family room?

A corner sofa suits most rooms and leaves one side open for flow. A U-shape seats more people and creates a cosy, enclosed zone, but it needs a larger room and works best when the open end faces the TV or fireplace.