Upzoning Lowers Prices

Well‑designed local upzoning and permit reform measurably increase housing unit production in affected parcels, and rigorous studies (difference‑in‑differences) show those added units diffuse price pressure rather than simply catering to the wealthy. Claims that new supply only creates luxury housing are often confounded by demand shocks — developers build where demand is already high — so causal econometrics matter for policy. — If true, this reframes local housing fights: opponents of new construction can be countered with causal evidence that supply‑side reforms do lower prices, changing both policy strategy and political messaging.