Rapid city building reduces rents

A large, sustained local housing boom (Austin added ~120,000 units, 2015–2024) produced measurable downward pressure on rents, providing concrete empirical backing for supply‑side housing solutions. This suggests that pro‑building policy and permit reform at city scale can be an effective lever on affordability, though outcomes may vary by market and require supporting infrastructure. — If generalizable, this strengthens the policy case for zoning reform and expedited permitting as primary tools to lower housing costs rather than only demand‑side interventions.