HAR Report: Months of inventory expanded from a 2.5-months supply last February to 3.4 months, which is slightly below the 3.5-months supply that prevailed in October and November 2023. Housing inventory nationally is at a 3.0-months supply, according to the latest report from the National Association of Realtors (NAR). A 4.0- to 6.0-month supply is generally considered a “balanced market” in which neither buyer nor seller has an advantage.