If you live in the Bay Area and only have $15K towards a property, then this might be your only available option to own your own property locally. Especially if you're going to be paying rent, then I'd evaluate what a typical PM makes in your area (i.e. if they make 10% of gross rent, then that helps you understand how much value you bringing). Ultimately it'll come down to a conversation between you and your future partner. If it was me, I'd first try to identify what % of ownership you are comfortable with within this deal, and then I'd pose the question to your partner what % split they think is fair. If what they propose works within the % you're comfortable with, then go for it. You didn't mention how many units this was, but if it's 4 units or less, then you may be able to secure a loan with FHA financing and have your family member co-sign the loan if you don't meet the income requirements. That would allow you to bring more to the table.