Different companies do work this out differently, but we work out the corner as if you are stood facing the sofa.  

When you're shopping on our website you'll see that our team have included whether the sofa is left or right hand facing in the name.  We've also got a 'view in your space' option which will show you exactly what the sofa will look like in your room

Right Corner

As you can see when you're stood facing the sofa the chaise is on the RIGHT hand side.  So when you're sat on the sofa itself the chaise is on the LEFT.

Left Corner

As you can see when you're stood facing the sofa the chaise is on the LEFT hand side.  So when you're sat on the sofa itself the chaise is on the RIGHT.