How to Measure Your Room for a Corner Sofa Bed
Buying a corner sofa bed is a significant investment — and one of the most common (and most expensive) mistakes is getting the measurements wrong. A sofa that's too large can overwhelm a room; one that's too small can look lost and leave you short on seating.
This step-by-step guide walks you through exactly how to measure your space so you can buy with complete confidence.
What You'll Need
- A tape measure (at least 5m)
- Pen and paper or a notes app
- Optionally: masking tape to mark out the sofa footprint on your floor
Step 1: Measure the Room
Start with the full dimensions of your room — length and width at their widest points. Note any alcoves, radiators, or features that reduce usable wall space.
Then identify the corner where the sofa will sit. Measure the available run along both walls from the corner outward, stopping at any obstruction (door, window, radiator).
Write these down as two separate measurements — for example: Wall A: 240 cm | Wall B: 180 cm. These are your maximum sofa dimensions for each side of the L.
Step 2: Allow for Clearance
A sofa that fills every centimetre of wall space will feel cramped. As a rule of thumb:
- 45–60 cm clearance between the sofa and other furniture (coffee table, TV unit)
- 90 cm minimum for walkways and thoroughfares
- 30 cm from the wall behind the sofa if it has a reclining function
Subtract these clearances from your wall measurements to get your target sofa dimensions.
Step 3: Account for the Bed Extension
This is the step most buyers forget. When the sofa bed is opened, it extends further into the room — sometimes by 80–120 cm depending on the mechanism.
Check the product listing for the open/bed dimensions and make sure you have enough clear floor space in front of the sofa to fully extend it without hitting other furniture.
For more on mechanisms, read: Choosing the Right Sofa Bed Mechanism.
Step 4: Check Doorways & Access Routes
Most corner sofa beds are delivered in sections, which makes access easier — but it's still worth checking:
- Front door width — standard UK doors are 76–81 cm wide; check your product's section widths
- Hallway width and length — long sections may need to be angled through tight hallways
- Staircase — if the sofa needs to go upstairs, measure the stairwell width and any tight turns
- Ceiling height on stairs — relevant for tall sofa backs
When in doubt, contact us before ordering and we can advise on delivery logistics.
Step 5: Mark It Out on the Floor
Before you order, use masking tape to mark the exact footprint of the sofa on your floor. Live with it for a day — walk around it, sit in the space, check sightlines to the TV. This simple trick prevents a huge amount of buyer's remorse.
Quick Reference: Minimum Room Sizes
| Sofa size | Minimum room size |
|---|---|
| Small corner sofa bed (e.g. 200 × 140 cm) | 3.5m × 3m |
| Medium corner sofa bed (e.g. 240 × 170 cm) | 4m × 3.5m |
| Large corner sofa bed (e.g. 280 × 200 cm) | 4.5m × 4m |
These are guidelines only — always measure your specific room and chosen sofa dimensions.
Ready to Find Your Perfect Fit?
Browse our full range of corner sofa beds — each listing includes full dimensions (closed and open) to make measuring easy.
For more buying advice, read our complete corner sofa bed buying guide or our left vs right-hand facing guide to nail the orientation too.
