US Commercial Property Sales Activity Drops 17% in February, March Market Indices Show Investor Caution Among Heightened Uncertainty Stemming From Pandemic CoStar’s U.S. Multifamily Index led growth among the four major property types. (Getty Images) By Mark Heschmeyer May 2, 2020 | 9:37 A.M. Commercial property sales activity in February and March declined 17% as the financial fallout from the coronavirus pandemic hit real estate