A few ideas if these are your problems. You could do PTTP deadlifts in the basement, if headroom not a problem if you can stand up, and do KB presses for the upper body where you do your KB work now. If you have a garage, you can setup your training space there. That's what I do and a bar and plates for deadlifts don't take much space when stored. You can even get your car in when not training. You could even train outside, storing the weights inside. I often do that in the summer. Getting the bar and weights outside is the warmup. Of course, living in Montreal, Canada, it's a bit more difficult in the winter, although years ago I even trained outside year long (with dumbbells and body weight moves), even in -15C weather, snow, etc...
That's one thing t I like about the deadlift: easy to setup, as opposed to squats which need a rack. KB presses/TGUs/carries take care of my upper body for now.
Of course, all this could be completely unapplicable to you, but if you really want to do deadlifts with a bar, there is for sure a way to do them that will keep you and your family happy without too much trouble.