Elizabeth Young

In his 30-year brokerage career, Ace Schlameus has developed direct experience in marketing, finance and transaction negotiation skills. Ace has consistently brought measurable economic value to client's investments. As the Senior Broker for a team that represents large portfolios, he has continued to be a top producer. In the past 15 years Ace has averaged more than 100 transactions annually for more than 30 million square feet of office space.

He has proven to be a creative leader that can achieve results in any market. His experience in multiple sectors of the real estate industry has given him a unique skill set to accomplish goals from an asset manager's perspective.

The successful execution of marketing campaigns have been a hallmark of Ace's career.

Jenny Seckinger joined Colliers in 2008 and has more than 16 years’ experience in the real estate industry.  

During her career, she has successfully leased, sold and acquired significant Class A assets for private equity, individual and institutional clients.  Projects have included all sectors of the real estate industry including retail, medical, office, land and development.  Jenny has been a senior member of various teams in the development of major high profile marketing campaigns and was personally responsible for working closely with owners to maintain asset values during the 2020 pandemic resulting in the successful sale of a diversified portfolio of retail asset at full stabilized capital rate value. 

Jenny has continuously demonstrated that she can achieve positive results in any market. Her ambition, dedication and goal achieving attitude ensure the client’s goals are secured.  

Doug Pack joined Colliers in 2021 and specializes in office project leasing alongside his partner, Sam Hansen. Doug has been involved with commercial real estate in Houston, primarily as an Office Landlord Leasing Agent, for more than two decades. Doug joins Colliers after spending five years as a Principal in the same capacity at Avison Young. While at Avison Young, the duo leased more than 5 million square feet of office, flex and retail space throughout the Houston metropolitan area.

Prior to Avison Young, Doug was Executive Vice President at NAI Partners, working aggressively to advance project leasing, property management and investment sales. In this role, Pack more than tripled the size of the division’s agency office leasing portfolio - growing it to 3.8 million square feet of Class “A” and “B” office product, as of February 2016. Also, during his time at NAI Partners, Doug brokered 16 Class “B” office building investment sales transactions totaling over $65,000,000 to both local and institutional commercial real estate investors.

As a veteran in the real estate industry, Doug has a strong reputation and track record in the development and execution of successful leasing project platforms. Doug started his commercial real estate career with Boxer Property in 1994, and during his tenure, he held several leadership positions in both leasing and operations. As a key executive with success on both Doug Pack property management and agency leasing. Starting in 2009 Doug was responsible for developing Boxer’s third-party management and leasing service line—which grew to more than 5 million square feet during his tenure. He also led all business development and supervised the third-party portfolio, its management and leasing platform, and the asset management team. Prior to that Doug served for 10 years as Boxer’s Director of Leasing, responsible for a portfolio of more than 8 million square feet with assets located across the United States. The portfolio consisted of office, medical office, retail and multi-family properties. Before taking over as Leasing Director, he was Regional Director of Operations for a portfolio of office buildings in Dallas and Tulsa covering 2 million square feet of assets. Upon his successful implementation of the Boxer management and leasing program, the Tulsa portfolio was sold to a third-party investor. Doug has been active in all facets of real estate management and leasing for more than two decades, and his accomplishments include assisting in the creation of the leasing portion of the Boxer policy manual, establishing policies and procedures, and internal controls and operational guidelines, as well as the development of the vertical integration of internal services for property management, which resulted in significant operational savings to both Boxer and its third-party clients.

Sam Hansen joined Colliers in 2021 and specializes in office project leasing alongside his partner, Doug Pack. Sam has been involved with commercial real estate in Houston, primarily as an Office Landlord Leasing Agent, for more than two decades.

Sam joins Colliers after spending five years as a Principal in the same capacity at Avison Young. While at Avison Young, the duo leased more than 5 million square feet of office, flex and retail space throughout the Houston metropolitan area.

During his eight-year tenure as Senior Vice President with NAI Partners, Sam built a successful office portfolio of Class A and B office buildings. Sam also assisted NAI Partners in building a successful management platform totaling nearly 4.5 MSF of industrial, office and retail properties.

Prior to joining NAI Partners, Sam worked for Hines Interests for 12 years. As a Director of Leasing, he was solely responsible for approximately 5 million square feet of Class A, trophy, commercial office buildings including JPMorgan Chase Tower, Williams Tower, and Greenspoint Plaza—ExxonMobil’s World HQ for Upstream Development and Exploration. With Hines, Sam completed more than 156 significant office leasing transactions totaling over 1.85 million square feet and has represented building owners and negotiated leases on their behalf with top Fortune 100 companies including, but not limited to, ExxonMobil, Wachovia (regional headquarters), Citigroup, Verizon, Merrill Lynch, and Lehman Brothers. Sam has also completed transactions with other notable tenants such as Locke Lord, Breitburn Energy, CBRE and Williams.

Sam’s depth in real estate also extends to Operations which allows him to better understand and market an asset to prospects. Sam was one of the first agents in the U.S. to complete the Hines Advanced Technical Core program and was part of the pilot program to generate a standardized training program for Hines to deploy worldwide.

Sam’s past responsibilities maximize his odds for success in all property Classes and sizes. During his 20+ year career, Sam has proven himself to be a dynamic, multi-talented team member that offers the ability to provide value and creative solutions for property owners while meeting the requirements of asset managers and tenants alike.

Preston Smith joined the Colliers Landlord Agency Leasing Team as an Associate in March 2022. Preston works with Doug Pack and Sam Hansen, and provides assistance to their clients by possessing a thorough understanding of the Houston office market. His primary responsibilities include research and leasing services which will enhance Colliers’ ability to provide first class services to our clients.

Prior to joining Colliers, Preston earned his Bachelor of Science with a concentration in Finance & Real Estate and a minor in Economics from Texas A&M University. While there, he was a member of the men’s lacrosse team for four years as a defenseman. Preston interned at Lee & Associates where he gained an understanding of the commercial real estate market of Houston and assisted associates on the industrial tenant representation team during the summer of 2020.