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Colliers | Wisconsin announces longtime advisors as newest partners

2019 Q3 Milwaukee Office

Sagmoen and Sewart have a combined 40 years of industry experience at the Milwaukee brokerage

MILWAUKEE, WI (July 5, 2022) - Colliers | Wisconsin is pleased to announce Steve Sewart and Russ Sagmoen as Partners in the company. Both Sewart and Sagmoen are longtime brokerage advisors with the firm, first joining Colliers in 2003 and 2006 respectively. During this time, both have built reputations as go-to experts in their fields and have been critical in the growth of the firm.


Steve has spent his career working closely with both local and institutional owners and tenants throughout southeastern Wisconsin. He also has represented and supported attracting some of the largest companies to the Milwaukee region as a member of the Colliers Occupier Advisors team.


Russ has been a top real estate advisor, advising retail owners, tenants and financial institutions across the state for nearly two decades. His work with financial institutions has established him not only as a local expert but as a leader within Colliers national platform.


“We are very excited to add Steve and Russ to the partnership” said Lyle Landowski, President & CEO of Colliers | Wisconsin.  “They collectively have 40 years of experience / tenure and are respected leaders not only within their specialties, but also the brokerage industry at large.”

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Lyle Landowski

President & CEO


Lyle is responsible for driving the culture, strategic leadership and ultimately growth of Colliers | Wisconsin and related companies. Lyle, along with the entire Colliers | Wisconsin leadership team, has created a diversified and integrated family of companies. This full-service platform aims to serve and support Colliers market leading brokerage and property management platforms.

Most of his career has been spent in the commercial real estate industry, working primarily as an office broker. Lyle has worked with some of the largest landlords and corporations in the region, helping advise on strategy and servicing their real estate needs. This experience has given him insight in the industry and valuable perspective on how to build a market leading brokerage and property management platform - particularly by leveraging technology, marketing, research and analytics.

Lyle has a great passion for people and a desire to serve. He views it as his role to help each person reach their potential and to help the company discover its purpose, both internally and externally through the community.

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Russ Sagmoen



Experienced Executive Vice President with a history of working with financial institutions on all facets of commercial assets. Skilled in real estate analysis for banks and credit unions: branch network optimization, disposition, expansion, relocation, rightsizing, sale-leaseback, real estate impact for potential M&A deals, short sales, receivership and REO sales.

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Steve Sewart



Steve joined Colliers | Wisconsin as a member of the industrial brokerage team in 2003. Throughout his 20 years advising clients, Steve has diligently advised his clients regarding space acquisitions and dispositions, site selections, lease negotiations, real estate strategies and financial analysis.

Since joining Colliers, Steve has played an active role in the industrial group and has been a top producer, deal of the year winner and Costar “Power Broker”. Currently, Steve is  responsible for marketing approximately 4,200,000 square feet of industrial and flex space throughout southeastern Wisconsin. Taking into account his experience in the industry, as well as the value he adds to the organization, Steve was named as a Partner of the Wisconsin office in 2022.

Steve’s areas of expertise include; leasing and sales of industrial buildings, landlord representation and tenant representation.

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