<prompt> Human: Hey Reddit,Housing prices are blowing up where I live San Francisco and Im thinking about buying my first house. When it comes to this part of finance Im a total noob with regards to mortgage interest deductions, total cost of home ownershiprainy day fund for a house, property taxes, mortgage types, etc. My overall goal is to figure how aggressive I can be and see what my upper price limit is for buying a house. Your help and comments is greatly appreciated!My financial profile: Age: 28 Cash Savings: I have about 215k in cash, 65k in stocks, 60k from my parents whenever I ask for it Retirement Accounts: 190k in various 401kRothTraditional IRAs. I really dont want to use this but I heard if youre buying your first home you can withdraw from retirement accounts without a penalty?In terms of comp for paying a monthly mortgage: My base salary is 200kyear My target bonus is 200kyear. I feel very confident Ill get at least 85 of that a year My stock is worth 200kyear. I feel somewhat confident in this. Worst case scenario itll be worth 50 of face value. Since its stock, if its underwater, Id prefer to hold onto instead of having to sell it to pay a mortgage My BF makes about 65kyear and hed be contributing to the mortgage as well Located in California so assume relatively high federal and state tax rates No debt other than a 1kmonth car paymentIf you were in my financial situation, what would be the max amount youd feel comfortable paying for a house? What percentage would you put down? Would you do a 30 year fixed for security, or be more aggressive and do a 51 ARM so you can buy something more expensive? Would you borrow from the retirement accounts to put a bigger down payment down? After putting down the down payment down, how much cash should I have on hand for a rainy day fund?Thanks for your help Reddit!Assistant: The better question is how much house do you need?Human: SF is 1000sqft right now so as much house as I can get? We can get a nice condo in the 1.2-1.4M range, but if we want a single family home its 1.5M.Wed really like a home so were trying to figure out how big we can go.  <response>: Do you need 2500 sq ft and a pool if thats how big you CAN go? Or do you need 1500 sq ft even though you can afford more? 