Erin Proto

Erin Proto

Senior Research Manager

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Professional Summary

Erin Proto joined Colliers International’s San Francisco Office in December of 2013. She heads up the research department and is responsible for authoring office, multifamily and retail research reports. She is responsible for the management of all data collection, quality control, aggregation, analysis, interpretation and timely reporting of market information and trends. Prior to Colliers, Ms. Proto served as Director of Research at Cornish & Carey Commercial Newmark Knight Frank (C&C) for the Walnut Creek and Pleasanton offices.  Before joining C&C, she worked for Grubb & Ellis as Vice President, Director of Research & Marketing in the East Bay and San Francisco offices. During her eleven years at Grubb & Ellis, she mananged the companies research and marketing efforts, including managing the research and marketing team, was responsible for the database, market analysis, quarterly and forecast reports, creation of key proposals and presentations. She was also responsible for all direct marketing functions of the office including collateral material development, communications, web presence, social media marketing, public relations, forecast events and conventional advertising.


 Colliers Market Research iPad App 2015 – Best Market Intelligence Initiative – Finalist

Commercial Real Estate Women (CREW) - Membership Committee

2018 - Named Colliers Centers of Excellence (CCOE) Research Lead for the Northwest Region of Colliers International


 California State University, Hayward

Memberships & Involvements

CREW, Colliers International USA Research Council - Member, Colliers Centers of Excellence - Team Lead | Research


The SF Registry, The SF Business Times, Costar, Digital Sky Aerial Imaging, Sig-1, Cornish & Carey Commercial Newmark Knight Frank, Grubb & Ellis


Service Lines
Featured Research
Jan 28, 2020
Strong Leasing Volume Continues in San Francisco
Leasing volume in the City continued to be robust during the last quarter of 2019, posting over 2.2 million square feet of closed transactions.
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Jan 17, 2020
Fall & Winter 2019 Northern California Retail Market Report
Leasing Activity Remains Steady
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Oct 21, 2019
2019 Q3 San Francisco Office Market Report
Strong Office Investment Sale Activity - The San Francisco investment market experienced strong activity during the second quarter of 2019 with nine buildings transacting.
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Featured News
Nov 12, 2017
Despite a decrease in sales, Bay Area multifamily market remains stable.
A new report released by Colliers International indicates that while total sales volume of multifamily assets has decreased across Northern California, the market remains resilient.
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