As the saying goes, "The man builds the house and the woman furnishes it." As has been written several times by others, minor visual details (like the color of the tiles) should not shake a relationship. There are probably other problems. Of course, building a house is stressful and an additional burden. If finances become tight, nerves are on edge. For us, it works without major problems or conflicts. Although I pay for the house, my wife is equal. For planning matters, we sit together, discuss pros and cons, and then make a decision. She is not very interested in technology. Preferably hidden, it must work and be easy to use. When it comes to furnishings and visual things, I give her quite a free hand because she has a better eye for it. My happiness does not depend on whether the tiles are brownish or gray. If she wants it that way, fine. At the beginning, she was not very keen on the Bauhaus style. After we had looked at several objects, she realized that Bauhaus does not mean empty and uncomfortable. On the contrary, done right, it exudes a sense of security. Naturally with clear lines. By now, she is enthusiastic about it. I attend many appointments alone because she has to work. We talk beforehand and sometimes there is a text message to clarify things in between. I decide most things alone at the table. For big things or what strongly influences the character of the house, I take samples with me or there is another joint appointment. Building a house is a great project and should make both happy in the end. If things go wrong already in the planning phase, one should reconsider the whole thing (and the life situation at the same time).