NEWPORT BEACH, CA—Consistent with other recent indexes that have pointed to values either slipping or evincing little growth, the Green Street Commercial Property Price Index declined by 1% in October. Year over year, the index is also down by 1%, while over the trailing three months, it's been flat.

However, Green Street Advisors would caution against painting all of the major food groups with too broad a brush. The research and advisory firm notes that the index, which measures values across five major property sectors, was pushed down in October by falling mall valuations. Prices for most other property types were stable.

“In aggregate, prices have plateaued, but it's really a mixed bag when it comes to property pricing these days,” says Peter Rothemund, senior analyst with Green Street. “Industrial, medical office, life science—they've all done great over the past year. Malls have been weak. And everything else has been somewhere in between.”