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Professional Summary

David Harper is a respected, 35-year veteran of the commercial real estate industry.  He specializes in leasing and selling Industrial/R&D and Office properties, focusing on San Diego's I-15 Corridor market (Rancho Bernardo, Poway, 4S Ranch, Carmel Mountain Ranch, & Scripps Ranch).  He joined the Colliers International team as Vice President in 1998.  During the past five years, David has completed over $161 million dollars in transaction value, and nearly 2 million square feet. At Colliers, he has ranked in the top ten regionally in 2000, 2009, 2010, 2013, 2014, 2015, 2018 and 2019, and top 5 in San Diego office in 2009, 2010, 2013, 2014, and 2019, top 5 in San Diego office in 2009, 2010, 2019,  and 2014, and was a recipient of the International Awards of Excellence in 2000 and 2003, in recognition of ranking amongst the top 50 producers nationally.  Prior to his association with Colliers, he served as Senior Vice President with Coldwell Banker Commercial in Rancho Bernardo where he was recognized as their top producer for four years as well as the top industrial salesperson for eight years.  Other career experience includes commercial real estate brokerage at Rancon Real Estate and John Burnham and Company. 


2019, 2015, 2014, 2010, 2009, 2000 – Top 10 Producer Colliers International (outstanding sales performance regionally)

2003, 2000 - International Awards of Excellence Colliers International (top 50 producers nationally)

2003 - Manager’s Award for Outstanding Achievement Colliers International - San Diego office

2006, 2003, 2000, 1999, 1998 - Career Best (sales performance)

1997, 1996, 1995, 1991 - Top Producer | Coldwell Banker Commercial

1994, 1993, 1992 - Top Industrial Salesperson Coldwell Banker Commercial (ranking #2 & #3)

1989 - Rookie of the Year Rancon Real Estate


BA, Cal State Northridge


Service Lines

Landlord Representation, Tenant Representation

Property Type

Industrial, Office

Featured Research

Jan 24, 2023

San Diego's industrial market remained strong in 2022

2022 Q4 Industrial San Diego Region
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Oct 14, 2022

San Diego’s industrial market remains stable

2022 Q3 Industrial San Diego Region
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Jul 12, 2022

San Diego’s industrial demand constrains vacant space options

2022 Q2 Industrial San Diego Region
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Featured News

Apr 9, 2019

Cornerstone Centre in 4S Ranch Sells for $8,800,000

Industrial property is latest sale in closure of related 1031 tax exchange deals valued at more than $59 Million
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