HAR report: Single-family homes inventory grew to a 4.3-months supply in July. That is up from 4.1 months a year earlier and is only slightly below the 2019 peak of 4.4-months supply reached in June. For perspective, housing inventory across the U.S. currently stands at a 4.4-months supply, according to the latest National Association of Realtors® (NAR) report.