With the addition of veteran office leasing brokers Dave Seeger, Karsten Peterson and Mark Gustin, the Phoenix office of Jones Lang LaSalle hired its third major local broker team in less than two weeks as it cements plans for a larger and deeper presence in the Valley.

“I’ve known and worked with Dave, Karsten and Mark for more than 20 years, and in that time have watched them dedicate themselves to learning every facet of the Southeast Valley real estate environment,” said Dennis Desmond, senior managing director of Jones Lang LaSalle in Phoenix.

“They are consummate professionals and the submarket’s most respected ‘go-to’ office brokerage team. We are very pleased to welcome them and know they will be a great catalyst in our effort to serve landlord clients in the Southeast Valley market.”

Seeger, Peterson and Gustin join the firm as managing directors. They move to JLL along with team member Matt Gandolfo, who will serve as an associate. Together they are charged with enhancing and expanding JLL’s presence in the burgeoning Southeast Valley, which includes submarkets such as Tempe, Mesa, Chandler and Gilbert.

According to JLL research, the Southeast Valley cluster is one of the strongest in the entire Phoenix MSA and will continue to draw top-shelf corporate occupiers and investors given its strengthening fundamentals. This includes positive net office absorption of 860,000 SF in 2012, resulting in the lowest market cluster vacancy rate in Phoenix at 21.2%.

Seeger, Peterson and Guston are top producing Phoenix brokers with almost 70 years of collective experience and who annually participate in approximately 100 transactions totaling roughly 1.5 MSF to 2 MSF of office and back office space.

They have earned Top Broker recognitions for their broad market knowledge, as well as their deep geographic understanding of the East Valley and their focus on office and back office leasing and investment sales.

As part of the JLL Phoenix office, they join five other newly hired brokers — Bo Mills and Mark Detmer, who specialize in industrial real estate investment sales, and industrial leasing experts Pat Harlan, Steve Sayre and Kyle Westfall.

Seeger, Peterson and Gustin are all members of NAIOP. Gustin is also a member of the Society of Industrial and Office Realtors (SIOR) and is a Certified Commercial Investment Member (CCIM).

Seeger holds a bachelor’s degree in finance from the University of Arizona. Peterson holds a bachelor’s degree in Business Administration from Northern Arizona University and an MBA from Arizona State University. Gustin holds a bachelor’s degree in Business Real Estate from Arizona University. Prior to entering commercial real estate, Gustin served in the U.S. Army.