Sales of newly built, single-family homes in June inched up 0.8% to a seasonally adjusted annual rate of 610,000 units from a downwardly revised May reading, according to newly released data by HUD and the U.S. Census Bureau.

“Although we saw modest gains this month, new home sales have risen nearly 11% since the start of 2017,” said NAHB chairman Granger MacDonald. “Our members remain...