A water heater costs somewhere around $1,800 to replace. I know that number well because I watched a first-time buyer find out about it three weeks after closing, with $400 left in checking.
That's the mistake I want to talk about. First-time buyers put every dollar they have into the down payment. They see 20% as the finish line, they scrape together every last bit of savings to hit it, and then they get the keys with basically nothing in the bank.
I get why. Nobody wants to pay mortgage insurance, and 20% down sounds like the responsible grown-up move. Your parents probably told you the same thing. I'm going to push back a little here. I'd rather see you put down less and keep a real cushion than hit 20% and be broke on move-in day.
Here's what the first 90 days in a house actually look like. You need a lawn mower, or a ladder, or both. Something the inspector called "near end of life" decides it's done. The first utility bills show up, and they're higher than the ones at your apartment. Then there's the couch that doesn't fit through the door. (It happens more than you'd think.)
None of that is a disaster if you've got money set aside. All of it is stressful if you don't.
The rule I give my buyers: after closing, you should still have three to six months of your new total payment sitting in savings. So if your mortgage, taxes, and insurance come to $3,200 a month, that's roughly $10,000 to $19,000 you don't touch. On a $450,000 home, going from 20% down to 15% frees up about $22,500. Yes, you'll pay some mortgage insurance for a while. On a lot of conventional loans it comes off once you've built enough equity, and that's a much better deal than putting a surprise roof repair on a credit card at 24%.
I'm not going to pretend I have some secret formula nobody else knows about. I don't. What I do is sit down with you and your lender and run both versions side by side, 20% down and something less, so you can see the monthly difference and what's left in the bank with each one. Most people pick the cushion once they see it laid out.
So before you empty that savings account, send me a message and we'll run your numbers together. Cool cool. Talk soon.