# Rent vs. Buy: The Math of Homeownership, Part 2

By Christie Latham (@christielatham) · Published 2026-10-14

Canonical: https://voce.com/@christielatham/rent-buy-math-homeownership-part-b2xjz4

---

Rents rise with inflation — typically 3% to 5% a year — while a fixed-rate mortgage locks your principal and interest for the full 30-year term. [Opendoor's 2026 comparison](https://www.opendoor.com/articles/renting-vs-buying-a-house) puts it plainly: a fixed-rate mortgage locks your principal and interest payment for 30 years, while rents rise with inflation, and over a decade that gap becomes significant.

This matters more in a state like North Carolina, where the economy is growing fast enough to keep pushing housing demand up. Novo Nordisk is midway through a [$4.1 billion expansion](https://kimlongest.com/blog/claytons-resale-prices-softened-this-summer-the-reason-isnt-what-buyers-assume) that will add roughly 1,000 jobs, and Johnston County is among the fastest-growing counties in the state. That kind of job growth is a demand tailwind for both rents and home values — which is precisely why locking your housing cost while it's affordable is the defensive financial play.

**Mini-verdict:** A fixed-rate mortgage is an inflation hedge that your rent check never is, and it's most valuable in a market where wages and housing demand are climbing together.