Professional Summary

Thomas M. Mercer is a thirty-two year commercial real estate veteran, specializing in office, technology and Scientific R&D sales and leases.  He joined Colliers International’s San Diego office in 1982 where he has consistently contributed as a top producer.  He has been San Diego’s top producer nine times and he has consistently received top performance awards company wide.


Known for his San Diego office market expertise, Mercer’s experience includes investment sales, land acquisition, marketing strategy, lease negotiations, and market evaluations.  During his partnership with Kevin Craven, he has leased over 8.0 million square feet for a total lease consideration in excess of $3 billion.  The team has also been involved in sale transactions valued at more than $1 billion.  The Colliers duo represented Agouron Pharmaceutical, Inc. a wholly owned subsidiary of Pfizer in signing a 945,000 square foot lease at The Torrey Pines Science Center.  They leased and sold the two phase 325,000 square foot Nokia Product Creation Center for a total consideration in excess of $200 million.  In addition, Mercer represented Kilroy Realty in a 466,000 square foot Build to Suit for Intuit.  He recently completed the sale of the Genesee Executive Plaza, a two-building office/medical office project in the UTC area for $46.6M.


Mercer headed the Colliers International team selected by the Bank of America to handle the deposition of excess properties in five counties (Southern Orange, Riverside County, San Bernardino County, Imperial County and San Diego County).  The scope of the assignment included the negotiation of sales, leases and lease terminations for over 1.7 million square feet and a total consideration in excess of $100 million.


Allstate, "Equitable Life Assurance Society of the United States, Lend Lease Real Estate


Service Lines
Landlord Representation, Tenant Representation
Property Type
Industrial, Office
Life Sciences Group
Featured Research
Jul 14, 2020
2020 Q2 Office San Diego Region
Office demand posts downtick amid COVID market conditions
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Apr 13, 2020
2020 Q1 Office San Diego Region Report
Office market faces uncertainty during global pandemic
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Jan 24, 2020
2019 Q4 Office San Diego Region
2019: Strongest year for office demand in five years
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