Mine is unfashionably (who knew) combined as well. It's one of the most-used and most loved rooms (by me anyway) in the house. My issue is that it's only about 8 x 13 and I had lived in the house part-time for a year when I reconfigured it. We walk through to garage so it serves as side entry. There's a 7 foot open hanging space for coats & jackets adjacent to the door, storage for ironing board and place to hang things that air dry. Along the unbroken wall I've got a d-shape sink (not large enough in retrospect), 1 drawer bank, a wine fridge and washer/dryer all under a 13-foot stretch of unbroken counter. Above I have a 13-foot row of Ikea upper cabinets for overflow dish storage and other things. That counter is major -- everything goes on there. In retrospect I could have done without the wine fridge and had another bank of drawers. We really need a secondary closet downstairs. I find I need to change clothes in there when I go out to the garden, or if I'm around in house sweats and need to run an errand it's handier to change down there than run upstairs, come down, forget something, run back up YKWIM. I have an indoor/outdoor carpet in there that gets vaccuumed super well. When there's ironing, an old sheet helps with the floor issue. Fortunately, I used porcelain tiles in the whole back hallway area. Those are bulletproof so the floors are not an issue even with mud. I find the combo room super handy. I just would love to have it 3 times bigger with a huge bank of drawers so that the summer stuff could be stored during winter and the reverse. Plus I'd love to have a wall with really good light and storage for the sewing machine, mending accessories etc. Without seasons there would be much less pressure on that room in re storage. As for making the rooms separate, I'm one of those people who wants fewer and more efficiently configured spaces. I don't want to run from room to room. One the best spaces I ever had was in a rental house. The owners was an artist who had winterized the attached garage and converted it to a studio. It had big tables, bookshelves, storage plus a separate outdoor entrance. It was big open space and just great. So I'd be very happy with a multi-purpose laundry/mud/sewing/utility/closet/project room as big as the garage. Ha.

A scale drawing would be helpful. Include all the features like Windows, doors, plumbing. This can be a hand drawing on graph paper. Take a picture of it and post it.

Also following as this is one of my wish list items (Mudroom, Pantry, Laundry room). For me, this pantry will be more of a Butler’s pantry (storage of formal serving items) as well as storage of duplicate food items (pasta, beans, etc.). I would still store my oils and spices in the kitchen, but these would go into thoughtful locations opposed to a “kitchen pantry”. Does this make sense? Please correct me if I am missing something!

Most of the time it will be just 2-3 adults with visits from kids and grandkids. Gear will be winter jackets and boots to flip-flops as we experience all 4 seasons. This will be the only real pantry in the house where extra or large pots/pans are planned to be kept, costco-sized food packs, small appliances, toilet paper, small fridge, etc. Laundry room needs to have air drying solution for clothes as well as a wash basin and even some sort of ironing area. Am I asking too much for the amount of space that I have? lol. :-)