Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

What things should I consider when getting a joint-mortgage?
Your lack of numbers makes the question a difficult read.  What I'm hearing is "I want a house requiring a mortgage 8X my income."  This alone is enough to suggest it's a bad deal. On a personal note, when my wife and I bought our house, it was 2.5X our income. 20% down, so the mortgage was exactly 2X income. And my wife was convinced we were in over our heads.  The use of a partner who will take a portion of the profit is interesting, but doesn't change the fact that you are proposing to live in a house that costs far too much for you. If you are determined to buy such a house, I'd suggest you do it with the plan to rent out a room or two to roommates. If you are living in an area where the cost of buying is so high, the demand for rentals is likely high as well.  Absent a plan to bring ion more income, I see no good coming from this. Heed the warnings posted in the other two answers as well.