Phoenix, AZ

Office Brokers Mark Gustin, Jimmy Cornish and Emily Minnier Join CBRE in Phoenix

October 23, 2025

Sleek glass office building with CBRE signage, reflective windows, and landscaped entrance.

Media Contact

CBRE announced today that Mark Gustin, Jimmy Cornish and Emily Minnier have joined the firm's Phoenix office, specializing in office properties across the metro Phoenix area.

“We’re thrilled to welcome Mark, Jimmy and Emily to CBRE,” said Vanessa Williams, Senior Managing Director and Arizona Market Leader. “Their deep market expertise, client-first and collaborative mindset perfectly align with our commitment to delivering exceptional outcomes."

Gustin joins CBRE as an Executive Vice President, Cornish as a First Vice President and Minnier as an Associate. The team has over four decades of experience specializing in office, flex and life science properties. The team has completed over 2,500 lease and sale transactions, representing more than $2.5 billion in transactional value.

“Joining CBRE marks an exciting new chapter for our team. We are excited to bring our experience and client-first approach to CBRE’s world-class platform to continue delivering exceptional results while expanding our capabilities in the market,” said Gustin.

Gustin holds a bachelor's degree from Arizona State University and is a Certified Commercial Investment Member (CCIM) and a member of the Society of Industrial and Office Realtors (SIOR).

Cornish is a fourth generation Arizonan and holds a bachelor's degree in Regional Development from the University of Arizona.

Minnier serves on the NAIOP Steering Committee as Co-Chair of the Developing Leaders Education Committee. Beyond her work in commercial real estate, she has been a mentor with New Pathways for Youth, reflecting her commitment to the community and future leaders.

About CBRE Group, Inc.
CBRE Group, Inc. (NYSE:CBRE), a Fortune 500 and S&P 500 company headquartered in Dallas, is the world’s largest commercial real estate services and investment firm (based on 2024 revenue). The company has more than 140,000 employees (including Turner & Townsend employees) serving clients in more than 100 countries. CBRE serves clients through four business segments: Advisory (leasing, sales, debt origination, mortgage servicing, valuations); Building Operations & Experience (facilities management, property management, flex space & experience, digital infrastructure services); Project Management (program management, project management, cost consulting); Real Estate Investments (investment management, development). Please visit our website at www.cbre.com.