Jimmy, I think you might be overthinking it a bit. If I were you, I wouldn’t build assumptions in advance—I would leave the decision to the woman herself. It’s not a given at all that she would want a partner to merge into her life or her home. People have very different circumstances and preferences.
Have you also considered that you might choose a woman who doesn’t own her home? What if she lives with her adult children, or even still shares a place with a former partner? Or maybe she rents a small apartment—or just a room with a roommate?
How would you approach the situation in those cases? Would your plan still be the same?