if life is so awful for him with you in your parents house, let him go back to seattle. you can visit over long weekends or what ever, but this way he can be calmer, and more settled maybe. could be living under your parents might be too much for him, too small a space...who knows.

give him the option...stay here for now, or go back ..but do it on your own..as you need your resources to make things work for you. plenty of couples have dual careers..so it's n ot something unique. maybe he just does better with space. as for the noise, suggest ear plugs or headphones...can't really do much about that.

hard times happen you live you have to live. and you try to make it work for both parties..but if it doesn't, look for the alternative.