Right on Andrew. Welcome to BP. I also have a strong desire to give back in some way, particularly in Baltimore, where I spent my formative years. I think it's great you talk about this, especially since giving back doesn't seem to get talked about too much on BP. Someone once advised me to think of what they say on an airplane, "Put your oxygen mask on before assisting others". Figure out your strategy and get some momentum, and then that'll put you in a stronger position to give back even more.
Questions: Does the 10M belong to you? Does it belong to you father? Are you going into business with your father?
There are many ways to tap into that equity, and there are many ways to generate cash flow. Off the top of my head, you can use a HELOC or a cash-out refinance to turn that equity into a loan. And once you have liquid capital, there are all sorts of ways to invest it. If you're excited about renovations, then consider a BRRRR which, if done well would allow you to recycle money to own several cash flowing properties. If you want something easier, with that type of capital, looking into turnkey multi-family homes is probably a solid bet. You would just buy however many MF's that cashflow with 20% down each. Strong cash flow, and you have what deters most people from that route (capital!).