How to Measure Your Room for a Corner Sofa Set in 15 Easy Steps

To measure your room for a corner sofa set, record the length of both walls the sofa will sit against, note anything that interrupts them, work out the depth each side will take up, allow clear walkways, and then measure every door, hall and staircase between your front door and the living room. Do all of that before you choose a design and the sofa should fit first time.

Here is the process broken into fifteen easy steps, grouped into four short stages.

Stage One: Getting Ready

Step 1: Gather the right tools

A metal tape measure is more accurate than a fabric one over longer distances. You will also want a notepad or your phone, a pencil, a roll of masking tape and ideally a second person to hold the other end of the tape. Photographs of each wall help later when you are comparing designs.

Step 2: Sketch a simple floor plan

Draw the room from above. It does not need to be to scale, but it should show every wall, window, door, fireplace, radiator and alcove. You will add measurements to this sketch as you go, so leave plenty of space around the edges.

Stage Two: Measuring the Room

Step 3: Measure the two walls the sofa will use

A corner sofa needs two walls that meet, or at least two directions it can run in. Measure each wall from the corner outwards to the first obstacle, then to the end of the wall. Measure at floor level, because skirting boards and uneven plaster can make a difference of a centimetre or two.

Step 4: Note radiators, sockets and windows

Mark the position and height of radiators, low windowsills, plug sockets, aerial points and light switches. A sofa can sit in front of a radiator, but it will block heat and may affect the covering over time. Leaving a small gap is sensible. Sockets behind a sofa are fine if you do not need regular access to them.

Step 5: Check heights as well as lengths

Measure the height of any windowsill the sofa will sit beneath, and compare it with the back height of the sofas you are considering. A high backed design pushed against a low sill can look awkward and block light. Note the height of shelves or alcove cupboards too.

Step 6: Mark doors and how they swing

Draw the arc of every door that opens into the room. A corner sofa that stops a door opening fully will quickly become frustrating. Include cupboard doors and any French or patio doors, which often need more clearance than you expect.

Stage Three: Planning the Footprint

Step 7: Decide left or right hand

Corner sofas are described as left or right hand depending on which side the longer section or chaise sits. Retailers define this in different ways, most often as you face the sofa, so always check the product description or diagram before ordering. Look at your sketch and decide which side the longer run should go based on walls, windows and the television position.

Step 8: Allow for depth on both sides

It is easy to focus on length and forget depth. Each side of a corner sofa projects into the room, often further than a standard sofa, especially if one side is a chaise. Mark this depth on your plan along both walls. The area where the two depths overlap is the corner itself, and it takes up more floor than people expect.

Step 9: Plan walkways

Leave a comfortable route through the room. A gap of around 60 to 90cm is a useful guide for main walkways, with a little less acceptable where people pass only occasionally. Think about the route from the door to the window, to other rooms and to the television.

Step 10: Leave room for a table and legroom

Most corner sofas are paired with a coffee table. Allow roughly 40 to 50cm between the front of the seats and the table so you can stretch out and still reach a drink. If space is tight, a set of our modern nest of tables UK gives you surfaces when you need them and tucks away when you do not.

Step 11: Tape the outline on the floor

This is the step people skip and later wish they had not. Using the dimensions of the sofa you like, mark its outline on the floor with masking tape. Include the chaise and the depth of each side. Leave the tape down for a day or two and walk around it. You will quickly see whether the room still feels open and whether doors and walkways remain clear.

Stage Four: Checking the Delivery Route

Step 12: Measure the front door and porch

Measure the width and height of the door opening with the door fully open, not the door itself. Hinges, handles and draught excluders reduce the usable width, so measure between the narrowest points. If there is a porch with an inner door, measure that too and note the space between the two.

Step 13: Measure hallways and turns

Record the width of every hallway and note any tight turns, radiators, coat hooks or light fittings that stick out. A narrow hall with a sharp turn into the living room is often the real challenge, rather than the doorways themselves.

Step 14: Measure stairs, landings and lifts

For flats and upstairs living rooms, measure stair width, the headroom above the stairs and the size of any landing where the sofa will need to turn. If there is a lift, measure its internal width, depth, height and door opening.

Step 15: Compare with the sofa dimensions, including the diagonal

Check the height, width and depth of each section of the corner sofa, plus its diagonal depth, which is the measurement from the top of the back to the front edge of the seat. A sofa can often be tilted through a doorway if its diagonal depth is less than the door width. Also check whether the sofa arrives in separate sections and whether legs or back cushions can be removed, as both make the route easier.

Measuring Awkward UK Rooms

Many British living rooms are not neat rectangles. A few extra checks help when the space is irregular.

Bay windows. Measure the straight wall either side of the bay rather than the curve itself. A corner sofa usually works best with its longer side along a flat wall and the bay left free for a chair or plants.

Chimney breasts and alcoves. Measure the depth of the chimney breast from the wall and the width of each alcove. A sofa running along the chimney wall will stop at the breast, so note exactly where it projects.

Sloping ceilings. In loft rooms and converted spaces, measure the height of the wall where the sofa back will sit. A low backed design may be the only option under a slope.

Through lounges. In knocked through rooms, decide first where the living zone ends. The corner sofa can then help divide the space, with its back towards the dining end.

Wherever there is doubt, take an extra measurement. It takes seconds and removes guesswork.

Choosing the Right Corner Sofa for Your Measurements

With your plan complete, you can shortlist designs confidently. Compact corner sofas with slim arms suit smaller UK living rooms, while deeper, larger corners work in open plan spaces where they help define the seating zone. Fabric softens a room and comes in a wide range of colours, so our corner fabric sofas UK are a good starting point for family spaces. For an easy care, tailored finish, explore our modern corner leather sofas UK.

Think about the rest of the room at the same time. If the television will sit in the opposite corner, one of our corner TV stands UK can make better use of that space and keep the viewing angle comfortable from both sides of the sofa.

Common Measuring Mistakes to Avoid

• Measuring the wall at eye level rather than at floor level, where skirting reduces the length.
• Forgetting that a chaise projects further than the rest of the sofa.
• Measuring door width without subtracting handles and hinges.
• Assuming a sofa that fits the room will also fit through the hallway.
• Confusing left and right hand orientation.
• Leaving no space for radiators to release heat.

At Furniture in Fashion, we list full dimensions on our product pages so you can compare them directly with your plan. We offer free delivery to most UK mainland postcodes, and Returns are available up to 30 days.

Corner Sofa Measuring FAQs

How far should a corner sofa be from the wall?

It can sit close to the wall, but leaving a small gap of a few centimetres protects the paintwork and allows air to circulate, particularly in front of a radiator.

What size corner sofa suits a small living room?

Look for a compact design with slim arms, raised legs and a lower back. Taping out the footprint is the best way to judge whether a particular size feels comfortable.

How do I know if a sofa will fit through my door?

Compare the door width, measured between the narrowest points, with the sofa’s height, depth and diagonal depth. If any of these is smaller than the opening, the sofa can usually be manoeuvred through.

Is a left hand or right hand corner better?

Neither is better. It depends on your walls, windows, door positions and where the television sits. Your floor plan will usually make the choice clear.

Should I measure before or after choosing a sofa?

Measure first. Knowing your room and delivery route narrows the options and prevents disappointment later.