Bill Insull | Colliers International | Houston

Bill Insull


Senior Vice President | Houston

License # 416290

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Professional Summary

Bill brings more than 30 years of diversified real estate and business background to his approach to representing building owners. With more than 1,000 lease transactions completed on behalf of owners in San Francisco and Houston, he employs versatile, innovative approaches to creating, managing, and executing programs that target client and tenant needs to meet and exceed desired results. Bill joins Colliers International with a primary focus on office leasing and significant experience with industrial properties as well.

Bill’s approach to the business of commercial real estate ownership representation is that of a transaction-oriented and relationship-based self-starter. He employs an alert eye for identifying and executing pathways to capitalize on opportunities to reach goals by using effective sales/marketing, analytical, management, communication and interpersonal skills.

Bill earned his CCIM designation from the CCIM Institute. In his work for property owners, he has consistently outperformed market occupancy rates as exemplified by his work on behalf of Granite Properties, Inc. where he reached and maintained 99% occupancy on a five building multi-tenant office portfolio totaling ~ 1M SF.

Click here to visit the Houston Agency Leasing Group page. 


  • Real Estate Broker's License, Texas
  • Certified Commercial Investment Member, CCIM Institute
  • BBA in Real Estate & Bachelor of Arts in Government, The University of Texas at Austin

Memberships & Involvements

  • CCIM Houston/Gulf Coast Mentor Volunteer (2019)
  • Habitat for Humanity Volunteer (2017-2018)
  • Spring Branch Memorial Sports Association Commissioner, Boys Senior Soccer (2012-2014)
  • Spring Branch Memorial Sports Association Boys Baseball Manager (2009-2014)
  • Heights-Norhill Little League Board of Trustees Member (2003)
  • Heights-Norhill Little League Boys Baseball Manager & Coach (2001-2008)


Service Lines
Landlord Representation
Property Type

My Team

My Team

Featured Research
Oct 12, 2020
Q3 2020 | Houston Office Market Report
The Houston Office Market continued to contract during the third quarter as the COVID-driven, government-mandated lockdowns continued. After experiencing negative absorption of 1.14 million square feet in the 2nd quarter, the 3rd quarter followed posting...
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Oct 1, 2020
Skylines Read More
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Featured News
May 7, 2020
Colliers International awarded leasing assignment for 2425 West Loop South in the Galleria/Uptown submarket of Houston
Naissance Capital has awarded the leasing assignment for the premier office building 2425 W Loop S in Houston, Texas, also known as TwentyFour25, to Colliers International.
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Mar 20, 2020
Colliers International | CoStar Power Broker Awards 2019
CoStar Group, Inc., the data/analytics leader of the commercial real estate industry, has announced this year’s Power Broker Award recipients, recognizing professionals and firms who closed the highest transaction volume in commercial real estate deals and leads in their respective markets.
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Dec 27, 2019
BE.A.Resource | 2020 BEARing Gifts Toy Drive
BEARing Gifts provides holiday gifts to children under the care of CPS who otherwise would have no holiday cheer at all. Each caseworker submits children's holiday wishes to BEAR and then the wish lists are relayed to donors.
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