Phoenix

Stream Realty Partners Names Kyle Gellenbeck Vice President of Construction Management in Phoenix

Phoenix, AZ
October 06 2 min read

PHOENIX – October 6, 2026 – Stream Realty Partners, a national commercial real estate firm offering an integrated platform of services, announces that Kyle Gellenbeck has joined the firm as Vice President of Construction Management, strengthening Stream’s industrial construction management capabilities. 

Based in Stream’s Phoenix office, Gellenbeck will lead construction management for industrial development, build-to-suit projects, and tenant improvement projects across the market. He will work alongside Senior Director of Construction & Development David Kollar to grow Stream’s industrial construction management presence and support clients throughout the project lifecycle. 

In his role, Gellenbeck will oversee projects from early feasibility and budgeting through construction closeout, managing schedules and construction financials and coordinating architects, general contractors, and vendor partners. He will also work closely with Stream’s leasing, development, and property management teams to pursue new opportunities and deliver integrated solutions for clients. 

“Kyle brings extensive construction management experience and a strong understanding of the Phoenix market,” Kollar said. “His ability to manage complex projects while building strong relationships with clients and project partners makes him a great addition to our team. With Kyle leading our industrial construction management efforts, we’re well positioned to build on Stream’s existing capabilities and continue growing this service line in Phoenix.” 

Gellenbeck brings more than 10 years of construction project management experience across industrial, office, retail, and mixed-use properties. He has overseen projects totaling more than $200 million in value for investor and occupier clients, including complex tenant improvement buildouts, investor capital improvement programs, and multi-site national program rollouts. 

Gellenbeck joins Stream from Optimize Consulting Group, where he served as Managing Director, while also serving as Associate Partner at its affiliate, Columbia Project Management Partners. Previously, he spent five years with Cushman & Wakefield, where he advanced from Senior Project Manager to Director and ultimately led the firm’s Project & Development Services team across Arizona and Las Vegas. Earlier in his career, he served as Lead Project Manager with Bureau Veritas, managing national retail programs as well as industrial and distribution projects. 

“What drew me to Stream was the combination of a collaborative culture and the reach of a national platform,” Gellenbeck said. “Construction management here works alongside every service line, creating opportunities to bring more value to clients and build lasting relationships. I look forward to building on Stream’s reputation in project management and solidifying the firm as a go-to industrial construction management partner in Phoenix.” 

 

About Stream Realty Partners 
Stream Realty Partners is a national commercial real estate firm offering an integrated platform of leasing, investment, and development services. This includes tenant and landlord representation; Legendary CX property management; capital markets; investment management and sales; construction & project management; manufacturing, food & beverage, and distribution; workplace strategy; strategic marketing; and dedicated research. The company is headquartered in Dallas with operations in core markets coast to coast. Since 1996, Stream has grown to more than 1,550 professionals and now completes annual transactions valued at more than $11.5 billion in office, industrial, retail, healthcare, land, and data center properties. For information, visit www.streamrealty.com and follow Stream on LinkedIn, Instagram, X, and Facebook. 

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Kyle Gellenbeck

Vice President, Construction Management Contact

David Kollar

Senior Director, Construction & Development Contact