Dreaming about searching for a house with your family, especially when it involves financial decisions, can symbolize various aspects of your life. Here are some interpretations to consider:

1. Family Dynamics: The presence of your father and brother suggests that family relationships and dynamics are significant in your life. The dream may reflect your feelings about family responsibilities and the roles you play within your family unit.
2. Decision-Making: Your conflict regarding the house choice indicates a struggle in decision-making. This could represent your own worries about making the right choices in your life or feeling pressured by family expectations.
3. Investment and Value: The house symbolizes stability, security, and investment. Your concern about the house being a bad investment may reflect anxieties about your current life choices or your future, especially regarding financial stability or personal growth.
4. Independence vs. Obligation: Your readiness to pay for the house could indicate a sense of obligation or desire to support your family, but it also highlights your independence and ability to make significant decisions. This internal conflict may mirror your feelings about balancing your own aspirations with family obligations.
5. Fear of Regret: The dream might also hint at a fear of regret or making decisions that you may later question. It may encourage you to reflect on your judgment and instincts when it comes to important life choices.

Consider what aspects of your life currently resonate with these themes. This dream could be prompting you to evaluate your feelings about responsibility, family influence, and your own financial decisions.