New Homes Now Cheaper Per Square Foot Than Existing in a Third of Major Markets — Zillow Quantifies the Builder-Discount Economy

New Homes Now Cheaper Per Square Foot Than Existing in a Third of Major Markets — Zillow Quantifies the Builder-Discount Economy

A Zillow analysis published September 29, 2026 puts hard numbers on the builder-incentive economy: newly built homes sold for a median $205 per square foot nationally in July 2026, below the $212 median for existing homes. New homes have now sold at a per-square-foot discount in 17 of the past 19 months — a full reversal of 2018-2024, when new homes carried a premium in 77 of 84 months (peaking at +$25/sqft in November 2022). The June 2026 discount was the deepest at $12/sqft.

The geography is the story. Deepest new-home discounts sit where construction boomed: Austin -19.3%, Raleigh -14.4%, Tampa -12.4% per square foot. Steepest new-home premiums sit where building is scarce: New York +64.9%, Cleveland +50.7%, Milwaukee +46.0%, Detroit +44.5%.¹ New construction's share of sales over the 12 months to July 2026: 37.1% in San Antonio, 33.6% in Raleigh, 31.1% in Austin, 30.7% in Houston — versus 2% in Hartford. Nationally the share is 12.6% (back to 2019 norms after the 2023 peak of 16.7%), but Texas metros have gained dramatically since 2019 (San Antonio +12.9pp, Dallas +7.0pp, Houston +6.8pp) while New Orleans lost 17.7pp.

Zillow senior economist Kara Ng: "New homes are the overlooked opportunity more buyers should be thinking about. Buyers who assume new homes are out of their price range may be surprised at what they find... We often preach letting America build its way out of the affordability crisis, and these friendlier conditions are the payoff."

The supply mechanism: new-home months' supply hit 9.6 in July 2026 (vs 7.6 two years earlier), while resale inventory remains 17.1% below pre-pandemic levels — sellers with 3% mortgages don't have to cut price (and can relist as rentals), builders with standing inventory must. This is the mechanism behind the August new-home-sales bounce (684K SAAR, 8.5 months' supply, median -5.8% YoY) and the core divergence between what the macro data shows (starts rebounding, sales bouncing on incentives) and what builders report (margin compression — see D.R. Horton Heads to October 29 Fiscal Q4 Print Under Margin Pressure at 52-Week-Low Territory, Lennar Q3 FY2026: Incentives Fall to 12% While Orders Miss — Volume-Over-Margin Strategy Holds Through a Rate Shock).

Contract-stage demand stays weak, though: the August Pending Home Sales Index sat at 71.2 (-4.7% YoY), so the new-home share gains are coming at resale's expense, not from an expanding buyer pool.