the math doesn’t include interest or escrow payments for insurance and tax. Sure, just the principal is under $3k. With interest and escrow payments, it’s more like $5k

https://www.nerdwallet.com/mortgages/calculators/mortgage-calculator

Flower Mound is roughly 2.1%/home value for tax and Texas is starting to get pricey on home owners insurance. A $550k home with 15% down is easily $5k a month