Aaron West, David Josker, Amanda Spangler and Ricardo Pacheco

David Josker (clockwise from top right), Amanda Spangler, Aaron West and Ricardo Pacheco.

David Josker, Amanda Spangler, Ricardo Pacheco and Aaron West

President of West region brokerage; senior managing director for Orange County and Inland Empire; senior managing director for Los Angeles and Santa Barbara; regional executive managing director for San Diego and Las Vegas at Colliers

Aaron West, David Josker, Amanda Spangler and Ricardo Pacheco
By September 11, 2026 9:00 AM

Colliers has been expanding aggressively across Southern California, and four executives leading that push have established its regional business as an interconnected platform.

David Josker, who oversees 16 Western markets, said Southern California is a “gateway” for Colliers. The firm has steadily recruited for years, expanded its El Segundo presence, consolidated two San Diego offices into a new Del Mar Heights location, and increased its share of major assignments. 

In Downtown L.A., Josker said Colliers has gone from relatively little market share three years ago to roughly No. 2 in listing assignments, while helping sell multiple office towers this year. And the industrial side had already established itself years ago. “You can’t bet against the Southern California industrial market,” he said.  

Amanda Spangler is overseeing similar growth across Orange County and the Inland Empire. Colliers has added seven industrial brokers in 10 months and will relocate to a new Irvine office early next year. The expansion comes as leasing and capital activity improve following the Inland Empire’s historic development wave.

“The best time to invest in talent isn’t when the market is at its peak, but when the next growth cycle is beginning to take shape,” Spangler said. 

Ricardo Pacheco has pushed Colliers deeper into Greater L.A., expanding offices in El Segundo and Glendale and opening in Santa Barbara, where his group facilitated a major 17-building Goleta portfolio tied to the emerging quantum-computing market. 

Colliers also brokered Capital Group’s $210 million acquisition this June of Bank of America Plaza in Downtown L.A., and new hires in the South Bay have positioned the firm around one of 2026’s biggest stories: advanced manufacturing, aerospace and defense demand.

Aaron West, meanwhile, is overseeing San Diego and Las Vegas, where Colliers has more concentrated talent. He sees San Diego’s constrained supply, deep labor pool and improving life sciences market as durable advantages. 

“At the end of the day, this is an industry where … the client aspect and the business aspect really comes down to relationships and trust,” West said.