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Rob Martensen | Colliers | Phoenix

Rob Martensen


Executive Vice President

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Professional Summary

Rob Martensen is an executive vice president with Colliers and has specialized in the metro Phoenix industrial market for 24 years. His industrial expertise includes single- and multi-tenant building sales and leasing, land sales, build-to-suits, ground-up speculative developments, and landlord and tenant representation.

Rob is an expert in analyzing market conditions, with a precise knowledge of current lease rates and values. Leveraging his knowledge of current and future market trends with Colliers’ exceptional research capabilities, he ensures clients are able to make smart, profitable and informed real estate decisions.

Whether working with developers, landlords or tenants, Rob understands each client’s business challenges and develops tactical recommendations and real estate solutions focused on accelerating their success. Transactions are aligned with his clients’ business objectives to meet or exceed their financial goals. His organizational skills ensure transactions close in a timely manner.

Rob is recognized as a top-producing industrial broker and industry leader. He has been involved in over 600 transactions, including industrial and land sales, leasing and build-to-suits,

As an active member of Colliers and the community, Rob serves as the West Regional Director of SIOR, was past president of the Arizona Chapter of SIOR, is a member of the Leadership Council for Colliers in Arizona, and a Board member for Colliers AZ Cares—a charitable foundation. He is also involved with and supports Brokers for Kids, Anytown Arizona and Colliers’ Holiday Adopt-a-Family.

When not brokering industrial real estate, Rob is a semi-professional off-road race car driver and has won the prestigious Baja 1000 off-road race in Baja, Mexico.

Before joining Colliers in 1997, Rob worked in the residential real estate market.


  • Member of the Society of Industrial & Office Realtors® (SIOR), which is the leading professional commercial and industrial real estate association. The SIOR designation is a professional symbol of the highest level of knowledge, production, and ethics in the real estate industry.
  • 2019-2021 - West Regional Director, SIOR
  • Past President of the Arizona Chapter of SIOR
  • Certified Commercial Investment Member (CCIM) designation of the Commercial Investment Real Estate Institute
  • Ranked as Top Producer in 2020, 2019, 2018, 2017, 2016, 2015, 2014 and 2008, Colliers in Arizona
  • 2020, 2019 – Colliers Everest Club, recognizing the Top 10% of Producers in the U.S.
  • 2018 – All-In Award for Colliers | Arizona for being fully committed to moving to the next level and to setting winning strategies for the future
  • Twice nominated for the NAIOP Industrial Broker of the Year
  • Featured as Broker of the Month in Commercial Executive Magazine
  • Chosen as an Arizona Business Leader by AZ Big Media


  • Bachelor of Arts, Psychology, Arizona State University
  • Associate Broker's License, Arizona Dept. of Real Estate

Memberships & Involvements

  • SIOR - Society of Industrial and Office Realtors - Arizona Chapter President
  • CCIM - Certified Commercial Investment Member
  • Colliers Industrial Services
  • Colliers Logistics & Transportation Solutions Group
  • NAIOP, the Commercial Real Estate Development Association
  • Commercial Investment Real Estate Institute
  • NAR - National Association of Realtors
  • Colliers | Arizona Leadership Council
  • Colliers AZ Cares Board
  • KOLBE Index 8534


  • The Rockefeller Group Development Corporation
  • EastGroup Properties
  • First Industrial
  • Harsch Investment Properties
  • Irgens Development
  • Liberty Property Trust
  • The Alter Group
  • AEW Capital Management
  • Holualoa
  • Milgard Windows
  • The Koll Company
  • California Closets


“I’ve had several opportunities to work with Rob during the past 18 years. In every instance he provided professionalism, hard work, an understanding of the assignment, a commitment to the client’s needs, and results.”—Barry Bartle, Stockdale Management, LLC

“I’ve known the Colliers Industrial Property Services team for more than 20 years. They have great market knowledge, deliver exceptional service and consistently look out for their clients’ best interests. The bottom line is I can trust them. That’s why they will continue to handle The Rockefeller Group’s acquisition and leasing for many years to come.”—Thomas E. McCormick, SIOR, Senior Vice President, Rockefeller Group Development Corporation


Service Lines

Landlord Representation, Tenant Representation

Property Type

Industrial, Land


Logistics and Transportation Solutions Group

My Team

Featured Research

Apr 16, 2021

2021 Q1 Greater Phoenix Industrial Market Report

The Greater Phoenix industrial market for Q1 2021 saw rental rates continue to climb, increasing over 8% year-over-year. Vacancy decreased 80 bps over-the-quarter, while delivering 2.9 MSF, illustrating very strong tenant activity. Product under construction has reach an all-time high and more is in the pipeline.
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Jan 15, 2021

2020 Q4 Greater Phoenix Industrial Market Report

The Greater Phoenix industrial market ended the year with the highest YTD absorption ever witnessed at 13.9 MSF, with net absorption exceeding 7 MSF in the fourth quarter. Under construction decreased 2.2 MSF feet from third quarter to 7 MSF. We delivered 6.5 MSF of new product in Q4.
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Oct 13, 2020

2020 Q3 Greater Phoenix Industrial Market Report

Greater Phoenix industrial net absorption topped over 2.5 MSF in 3rd quarter. Under construction decreased 2.4 MSF from 2nd quarter to 9.2 MSF. Vacancy increased over-the-quarter by 10 bps and over-the-year vacancy increased only 80 bps to 7.9%. Rents increased 6.6% over-the-year and 0.15% over-the-quarter to $0.61 PSF.
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Featured News

Apr 20, 2021

Construction of industrial space in Phoenix hits record levels

The Greater Phoenix industrial real estate market maintained a record-breaking pace during first quarter of 2021, according to Colliers’ first quarter report. Construction activity reached an all-time high level, while momentum of net absorption indicates this year will easily outperform 2020.
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Jan 22, 2021

Brad Cooke, Alexandra Loye, Rob Martensen named as People to Know in CRE

Colliers International’s Brad Cooke, Alexandra Loye and Rob Martensen were named People to Know in CRE in 2021 by AZ Big Media. Nothing gets done in this industry without visionary people deciding to push the boundaries, analytical people to determine what, when and where is the best time to act, and craftspeople to turn vision and numbers into the hard reality that makes up our world.
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