I've never actually done it but have often thought of it. It seems to me that they are making furniture a little shorter now. Especially at mass production furniture stores.

I did it on the couch in the bonus room. One of the legs cracked and so I decided that was a good time to also raise the height of the couch. I bought the new legs at Home Depot in the molding department. You just need to finish them. The bolts/screws fit the old brackets, so it was basically take out the old and put in the new. That said the couch does not have a skirt so the extra height wasn't an issue with the looks. It makes the couch set better and I should have done it sooner.

Just check with the sofa's manufacturer and see if it can be done. I wanted to just change the legs/feet on my H&M leather Chesterfield, and asked and expert on Hancock and Moore. He contacted the company and due to the way the legs are attached, it can't be done on mine.

I have a bad back and mobility issues so I certainly sympathize. I agree...check with manufacturer. Good luck with your project, hope it all works out.

Here is a link that might be useful: chair lift

I had a 20 year old Natuzzi leather sectional sofa that the seat was only 15 inches off the ground and the back of the sofa was 32 inches high. It is in perfect condition. I bought two new chairs. OMGSH. The sofa looked dwarfed. I was sick. I hired a finish carpenter to make me new legs 4 inches high. The sofa has a whole new look. Amazing. I love it again.

Have you tried an upholsterer? I had the legs changed on a pair of chairs. No problem. As OP said, it would only work on a sofa that had no skirt.

I had the upholsterer change the legs on my sofa when I had it reupholstered this year. Like you, I wanted to raise it about an inch. It worked out fine.

We did the same thing as Fun2BHere. When we reupholstered a couch we added taller legs to it and it made a huge difference in comfort.