About Cowen TI

We’ve worked all over the state on countless types and sizes of tenant improvement projects. Our team can complete smaller ground-up projects, industrial buildings of all sizes and scopes, and complete interior renovation projects.

Cowen Tenant Improvement has been renovating buildings for our clients for 125  years.

Cowen TI will partner with your team from the very start with our experienced construction managers to ensure you are satisfied throughout the entire project. Cowen TI prides themselves on the relationships we have made and
maintained with businesses throughout the State and are excited to continue to serve more businesses to come. Let us partner with you!

Meet The Team

Ross Phippen

Vice President

Read Ross's Bio

Ross spent 17 years in facility management and built out spaces all over the US, Canada, and Europe. In 2005, Ross became Cowen Construction’s own client, which then led to him being hired as head of the Tenant Improvement division within the company. His industry-leading, diverse experiences make Ross’s leadership invaluable to Cowen Tenant Improvement as he oversees and mentors his team and manages projects.

Ross is the past president of the International Facility Management Association where he also served on the board for 20 years. Ross serves his local community through his heavy involvement in St. Jude’s fundraising efforts. A unique project he works on is building playhouses for St. Jude patients and their families around Tulsa. And with each house they build, the team of volunteers grows as they add new families who want to serve alongside them.

Alex Hall

Construction Manager

Carie Lichtenwalter

Business Development


  • Certified Facility Manager
  • Certified Professional Constructor
  • Green Advantage Certified
  • International Facility Management Association
  • Building Owners and Management Association

We have been helping build Oklahoma since 1896

and we look forward to working with you.


2200 S. Utica Place, Suite 100
Tulsa, OK 74114

Phone: 918.582.2220
Fax: 918.584.8922


635 W. Main St.
Oklahoma City, OK 73102

Phone: 918.582.2220
Email: [email protected]

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