John Underman

John Underman


Senior Vice President | Principal, Columbus

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Professional Summary

John has specialized in office leasing, tenant and buyer representation, and investment sales throughout Central Ohio and the United States for the past 15 years. He provides tremendous value to his clients by combining a methodical approach with thorough knowledge, relentless effort, and strong communication skills. His personal approach, excellent negotiating skills and analytical ability enable him to successfully complete his assignments. John is part of the Office Service Group at Colliers International and is dedicated to developing new business opportunities for the company.   


•    Grubb & Ellis National - Rookie Of The Year 2006
•    Ohio Chapter CCIM Scholarship Recipient
•    Ohio Chapter SIOR scholarship recipient
•    Colliers International | Greater Columbus Region Rising Star Award
•    Columbus Board Of Realtors 1031 Exchange Award
•    Costar Power Broker for Columbus Ohio Office Leasing multiple years


Bachelor of Arts, University of Cincinnati

Memberships & Involvements

  • Five Strong Foundation - Board Member and Founder
  • Keep Moving Foundation - Board Member
  • Goodwill Columbus volunteer and sub-committee chair
  • Franklin County Humane Society volunteer


Recent Tenant Clients Served: Dynamix Engineering, C.H. Robinson, Homeside Financial, Plaskolite, Laboratory Corporation of America, PNC Bank, NRT LLC, Allstate Insurance Company, Gallagher Bassett, The Limited, Dematic Corporation, Equifax, Accenture, VanTrust Nokia, Baird, Tree of LIfe Christian School, Convergint Technologies, Genesee Wyoming Railroad, Crown Castle

Significant Landlord Clients Served: Time Equities, Inc., Nationwide Life Insurance Company, Och-Ziff Real Estate, Friedman Real Estate Group, Rosemont Realty, EPCON Communities, Sperry Van Ness Equities, GE Capital, Park Corporation, LNR Property Corporation, Zurich Alternative Asset Management, Torchlight Investors, Kirco, The Ohio State University, Starpoint Proprety Group, MidOhio Development Corporation, Welsh Property Trust, Middleton Partners, Vantrust Real Estate, Real Capital Solutions



Aetna: 200,000 SF
CoverMyMeds: 165,000 SF (multiple leases)
Bank of America/Merrill Lynch: 60,000 SF
The Limited: 56,000 SF
Equifax: 55,000 SF (multiple leases)
Homeside Financial: 45,000 SF
Impact Columbus: 40,000 SF
Plaskolite: 40,000 SF
Anthem: 35,000 SF
Schremshock Architects: 35,000 SF
Brickman: 32,000 SF
La Senza: 30,000 SF
Wells Fargo: 25,000 SF
Accenture: 25,000 SF (multiple leases)
Hylant: 25,000 SF


Service Lines
Landlord Representation, Tenant Representation
Property Types

My Team

My Team


Featured Research

Featured Research
Jan 2, 2020
2019 Q4 Office Trends Report Columbus Colliers
The Columbus office market finished the year strong, recording 351,948 square feet of positive net absorption* in the fourth quarter. This brings year-to-date net absorption to over 1.2 million square feet. The fourth quarter is the seventh consecutive quarter of positive absorption and the third consecutive quarter of absorption above six figures, demonstrating the consistent growth of the office market. Strong leasing activity throughout the region contributed to rising absorption and declining vacancy - down to 8.8 percent this quarter. Overall asking rates remain steady at $18.75 per square foot, with Class A rates holding at $20.82 per square foot and Class B rates at $17.59 per square foot. Completed build-to-suit offices were driving forces on the market this quarter, as DHL and White Castle’s new headquarters both completed for a collective 250,000 square feet. According to The Kiplinger Forecast, GDP grew at a 2.1 percent rate this year due to home construction and government spending. GDP is expected to soften slightly to about 1.7 percent in 2020, as it is an election year. Locally, the Columbus unemployment rate remained at 3.7 percent this quarter due to the city being considered at “full employment” compared to the rest of the country. The region can anticipate another strong year in 2020, as national and international firms gain interest in Columbus’ skilled workforce, strategic location and emphasis on development.
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Oct 1, 2019
2019 Q3 Office Trends Report Columbus Colliers
The Columbus office market continued a strong year with 310,789 square feet of positive absorption in the third quarter. This marks the sixth consecutive quarter of positive absorption and the second consecutive quarter of absorption over six figures, proving the strength of the office sector. Due to consistent leasing activity, the vacancy rate continues to decline, dropping from 9.17 percent to 8.91 percent this quarter. Overall asking rates remain stable at $18.60 per square foot, with Class A rates holding at $20.91 per square foot. Internationally recognized occupiers were driving forces on the market this quarter, with Chipotle, Bank of America and WeWork all committing to office space around the region. According to The Kiplinger Forecast, U.S. GDP rose to 2 percent this quarter due to consumer spending and is expected to finish the year at 2.3 percent. With 2020 being an election year, GDP growth is expected to soften, dropping to around 1.8 percent. On a local scale, a tight labor market caused the Columbus unemployment rate to rise slightly from 3.4 percent to 3.7 percent. This rate is forecasted to remain stable in coming months, as the city is considered at “full employment” level. Central Ohio can expect consistent growth throughout the rest of the year, as tenants, investors and developers continue to take note of Columbus’ booming economy and first-class business landscape.
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Jul 2, 2019
2019 Q2 Office Trends Columbus Colliers
The Columbus office market experienced a boom in activity during the second quarter, posting 551,716 square feet of positive net absorption*. This marks the fifth consecutive quarter of positive absorption, demonstrating the growing strength of the office sector. The vacancy rate dropped from last quarter, declining from 9.51 percent to 9.17 percent as many large tenants occupied space around the area. Overall asking rates held steady at $18.71 per square foot. However, asking rates for Class A properties increased to $20.92 per square foot, with the CBD and New Albany submarkets seeing the largest upticks. The Kiplinger Forecast reports that the U.S. GDP grew 3.2 percent during the first half of the year but is expected to cool off throughout the coming months. Consumer spending grew by 2.5 percent in the second quarter, reversing the effects of the first quarter’s government shutdown. The unemployment rate in Columbus decreased from 4.2 percent to 3.4 percent this quarter– the lowest it has been since 2001. This rate isn’t expected to decline any further, as the city is considered around the “full employment” level in relation to the rest of the country. Throughout the rest of 2019, Central Ohio can anticipate continued interest from tenants and investors as the city experiences a period of unprecedented growth and development.
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