The June rate for units in buildings with five units or more was 236,000, a 26.7% decline from May. David Crowe, chief economist of the National Association of Home Builders (NAHB), Washington, D.C., said, “The large dip in multi-family production in June follows a boost of activity in May, and is consistent with the volatility that has come to characterize that sector as well as the uneven pace of the housing recovery.”