News release

Growth momentum for JLL’s Valuation Advisory group continues

Seattle team expands with five key hires specializing in multi-housing, industrial, manufactured housing and self-storage

September 21, 2022

Kristen Murphy

Capital Markets, Hotels & Hospitality and Value & Risk Advisory PR
+1 617 848 1572

CHICAGO, September 21, 2022 – JLL’s Valuation Advisory group announced today that it has expanded its team in Seattle, Washington, with five new hires: Aaron DeCollibus, MAI, Executive Vice President; Keith Lee, MAI, Executive Vice President; Andrew Chapman, Senior Vice President, Derek Mason, MAI, Senior Vice President and Jimmy Ryerson, Associate.

The Seattle team will be responsible for driving growth, enhancing the customer experience and providing value to clients in the Pacific Northwest and the entire West Coast region across several in-demand property types including multi-housing, industrial, manufacturing housing, self-storage and office.

“One of our primary goals in 2022, was, and is, to be a provider of choice for our clients and expand our geographic reach to serve clients across all regions,” said Tony Lenamon, Americas Head of Valuation Advisory. “While we already had a small-team based in Seattle, this expansion allows us to meet the needs of clients across additional property types and continue to offer best-in-class service through a combination of leading technology and experienced appraisers.”

DeCollibus, who has more than 20 years of commercial real estate experience, will serve as the multi-housing lead for the Pacific Northwest. Prior to joining JLL, he served as the Managing Director at another leading commercial real estate services firm with a focus on growing the Pacific Northwest region’s valuation footprint. He will report directly to the national multi-housing practice leads, Managing Directors Aimee Morgan and Kai Pan.

Lee will serve as the Pacific Northwest industrial lead. Based in Seattle, he will be tasked with expanding JLL’s footprint in the Pacific Northwest Region and will report directly to national industrial lead and Managing Director, Katie Parsons, MAI. Prior to JLL, he worked as a Valuations Service Director at national commercial real estate firm for 17 years, successfully leading a team of valuation professionals and specializing in industrial valuations.

Chapman, who will serve as the lead for JLL Valuation Advisory’s national manufactured housing practice, has more than 12 years of experience in valuations. During his career, he’s appraised more than 500 manufactured housing communities and RV parks. His experience spans projects for a variety of lending purposes, sales, asset monitoring, estate planning and proposed developments.

Mason joins JLL with more than 11 years in valuations. His expertise includes multi-housing, retail, office, industrial and mixed-use properties. He began his appraisal career at a local valuation firm in 2011, and then moved to a national commercial real estate firm in 2017.

Ryerson has been in the valuation industry for five years, with significant experience in multiple sectors, including the self-storage market.  

JLL Valuation Advisory is the essential guide to the changing face of real estate values and risk. The group brings together unrivalled human intelligence and experience, with continuous, data-driven insights to uncover a panoramic view of Value and Risk across sectors and geographies.

JLL’s 2,000 qualified valuation professionals are connected across more than 50 countries, sharing insights and real-time data to deliver tailored client solutions and advice for its clients’ real estate and business asset interests. The team is globally connected but also maintains sector-based expertise and deep local knowledge in every market.

For more news, videos and research resources on JLL, please visit our newsroom.

U.S. property valuation and tax consulting services are performed by JLL Valuation & Advisory Services, LLC, a wholly owned indirect subsidiary of Jones Lang LaSalle Incorporated.

About JLL

JLL (NYSE: JLL) is a leading professional services firm that specializes in real estate and investment management. JLL shapes the future of real estate for a better world by using the most advanced technology to create rewarding opportunities, amazing spaces and sustainable real estate solutions for our clients, our people and our communities. JLL is a Fortune 500 company with annual revenue of $19.4 billion, operations in over 80 countries and a global workforce of more than 102,000 as of June 30, 2022. JLL is the brand name, and a registered trademark, of Jones Lang LaSalle Incorporated. For further information, visit