$450,000 buys the median home in Columbia right now. With 20% down, that's a $90,000 down payment and a $360,000 loan, set against a $105,000 median household income.
Columbia's 0.8% property tax rate runs below the 1.1% national average. That's $300/month on the median home here, not a rounding error against the mortgage payment.
Unlike the nine no-income-tax states, Maryland taxes wage income. Worth running your actual take-home pay against the $2,821/month payment here before locking in a target price.
Day-to-day expenses in Columbia track at 130 against the national 100 baseline, above average once you look past the mortgage payment itself.
Columbia's median home price runs 45% higher than nearby Baltimore: $310,000 there versus $450,000 here.