Dallas-Fort Worth

Park Seventeen
1717 McKinney Avenue
Suite 900
Dallas, Texas 75202
Main: + 1 214 692 1100
Fax: + 1 214 692 7600

David Pinsel
Managing Director

Office Tenant Representation

Daniel Rudd

Executive Vice President  | Dallas
Dir +1 214 217 8340
Fax +1 214 692 6900

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Daniel Rudd has exclusively represented corporate clients in managing their real estate holdings, lease obligations, and occupancy needs since 1997. He is keenly aware of the strategic aspects of real estate to support overall corporate business goals and objectives, on a portfolio and individual basis... and then implementing accordingly. He has diverse real estate experience having worked on numerous projects covering a wide range of disciplines and property types. Daniel’s accolades include Colliers Top Producer (2013 and 2014), D CEO Magazine Power Broker (2011 & 2015), Grubb & Ellis Top Producer (2010), and CoStar Power Broker Award (2008).
Billy Vahrenkamp

Senior Vice President  | Dallas
Dir +1 214 217 8340
Fax +1 214 692 6900

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William "Billy" Vahrenkamp specializes in consulting and representing corporate clients in all aspects of managing their real estate. Since 2001, he has managed client relationships, developed new business and executed on transactions for his team. Billy's accolades include Colliers Top Producer (2013 and 2014), Bisnow's "35 under 35" Recognition (2011), D CEO Magazine's Power Broker (2011), Top Producer (2010) and Top New Business Developer (2009) at Grubb & Ellis Company.

Reegan Cornwell

Associate | Dallas
Dir +1 972 759 7865
Fax +1 972 759 7965
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Reegan Cornwell focuses on office tenant representation throughout the Dallas-Fort Worth Metroplex. She specializes in representing clients in managing their commercial real estate holdings, lease commitments and occupancy requirements. She advises each client by combining an understanding of their business goals and with workplace strategy to help clients with their brand, culture, recruitment and retention.

Mary King

Client Services Specialist | Dallas
Dir +1 214 217 1279
Fax +1 214 692 6900
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Mary King is a client services specialist on the Rudd-Vahrenkamp Team. Her role consists of overall transaction coordination from initial market research to lease close out packages. Mary has fifteen years of experience in commercial real estate. She has provided marketing and brokerage support for team specializing in tenant representation and investment sales.


We create positive, memorable experiences by exceeding expectations both in business outcomes and in personal interactions. Integrity, ethics and empathy guide every interaction and define our service approach with clients and colleagues.

Colliers at a Glance

Revenue: $2.6 billion*
Countries: 68
Professionals: 15,000
Square Feet Managed: 2 billion
Lease/Sale Transactions: 72,000
Total Transaction Value: $105 billion
All statistics are for 2016, are in U.S. dollars and include affiliates.