We recently had a small addition added to our little cottage- bumping out seven feet along the width of our house allowed us to add space to the kitchen, main bathroom and our bedroom. We also squeezed a tiny house half bath off of our bedroom. I also gained a good size closet and a sewing nook with a built in counter for sewing and storage for fabric and supplies. Now, I'm sure you are thinking of something on a grander scale but we are thrilled with our extra space. I'm looking forward to having a dedicated space for sewing away from other family business. Good luck.