The former Bekins Moving & Storage building and current Sonos research and development headquarters at 25 E. Mason St. has been sold, marking the largest transaction involving office property in Santa Barbara since 2007, according to Radius Commercial Real Estate & Investments.

Radius, which handled the sale, this week announced the purchase of the iconic Funk Zone building — listed at $21.5 million.

The buyer was not disclosed, and Sonos will continue occupying the entire building through its 10-year lease on the property.