Aaron De Collibus, MAI, CCIM, AI-GRS

Aaron De Collibus, MAI, CCIM, AI-GRS

Executive Director, West Coast Multi-Housing Valuation Team Lead

Current responsibilities 

Aaron DeCollibus is an Executive Director and the West Coast Multi-housing Valuation Team Lead for the Value and Risk Advisory business. In this role, he leads a dedicated group of appraisal professionals providing clients with exceptional resources and a best-in-class experience.  


Prior to joining JLL, Aaron most recently was the Managing Director, Pacific Northwest, for Apprise, Walker & Dunlop’s commercial real estate appraisal platform. Based in Seattle, Washington, Aaron brings more than 20 years of diversified real estate experience to JLL, with primary emphasis in the areas of valuation for investment analysis, portfolio asset management, acquisitions and dispositions, with extensive valuation experience across all asset types. Aaron’s valuation experience includes preparing opinions of value for conventional and agency financing, estate planning, litigation, and portfolio management, as well conducting feasibility and market rent studies. 


  • Pepperdine University, Malibu, CA Graziadio Business School — Masters of Business Administration, Finance Emphasis
  • Macalester College, St. Paul, MN, Bachelor’s Degree — History


  • Appraisal Institute, Designated Member
  • CCIM Institute, Designated Member
  • University of Washington — Runstad Department of Real Estate,  Adjunct Professor
  • King County Board of Equalization, Former Board Member

Certified General Real Estate Appraiser in the following States:

  • Arizona
  • California
  • Colorado
  • Idaho
  • Oregon
  • Utah
  • Washington 
  • Wyoming