How can I repair these damaged couches?

Holy macaroni! I hope you will crate train that guy until he gets over this behavior. No bedding in that crate, just a towel for now. Wear him out, with a game of fetch or something, before you put him in there. You can recover the cushions that are removable. For the others, get a sofa cover (they make stretchy ones that fit really well and stay put) and some fiber matting. You have another 10 months or more of this behavior to deal with. Redirect him from eating your things with soft toys. If you have old jeans, cut them up and knot them. When he goes for your things, give him something he is suppose to have. Labs are second only to Boxers for destroying things in their teenage year. Stay strong, this too shall pass.

Since this is under the cushions a repair should not be that tough. Use upholstery material (that is tougher weave than other material) try JoAnn fabrics to get a grey or tan and stitch a piece over the holes making a folded over seam (fold 1/2 to one inch edge under) and stitch to existing material. Since the batting is torn up you can cut a thin piece of foam and tack that in place before you cover with material, that should keep the foam in place and you should be good to go. Make the back side long enough to tuck some excess down behind the seat edge.

This is a major undertaking, unless it is a very unique coach..don't bother, start looking for bargains at the Salvation Army, Goodwill and other donation locations. You will need to go often, You can also paint new colors on fabric. The couch you have has a fabric that is so far gone. Do not loose sleep over it..go looking for bargain replacements.

Are you training? Start there before you even attempt to stat repairing your furniture. They are high energy dogs which require a lot of exercise, walks and play time. An exhausted dog is less likely to destroy your belongings. Talk to your vet about training, Google or hire a trainer. If you don't, it will be a lifetime of destruction.

First thing is to get rid of the puppy.

You will need to completely recover your sofa. The time and energy that takes is only worth it if this is a sofa that has meaning to you. Otherwise, it is a waste of time, materials, and energy.

Now, having said that, I'll tell you how I learned to redo my sofa and chair when they needed attention. First: I went to several local libraries and took out a variety of books on repairing, reupholstering furniture. I learn best using pictures and detailed descriptions. I was so proud to do a great job on my mom's furniture! What one book described another used different techniques...put together I had the solutions for the problems. I wish you well.

I bought Sure Fit furniture covers and I put my retriever in a large crate. She got out of one but not another. She ate new couch, loveseat and tables. I was paying on them and they were destroyed. I use table cloths now and furniture covers.When she knocked the pillows off she ate inside the couch so I bought a repair board at Bed Bath and Beyond and one on Amazon to fix the foundation. She is a Chesapeake Bay retriever a chocolate curly coat and should be hunting, not waiting in my condo alone while I work. I may take her to doggy daycare on my next raise but crate til then. And frozen Kongs and Kong full of peanut butter. She is perfectly house trained at least. I have to buy the strong jaw chews for her. They say indestructible but not for her. All the local pet marts are very helpful. She is a huge female . Sorry, Honeybear. Crate for you . This is not her picture. That is who I bought her to replace . The pitbull died, she was a perfect girl. Then I got Honey the Terror. Lilly