Commercial Real Estate Services
Pinpoint the right opportunity.
Navigate negotiations.
Close with Confidence.
Maximize value through targeted positioning, outreach, and structured sales processes.
Tailored leasing solutions that drive occupancy, NOI, and long-term success.
Minimize tax exposure and reinvest with a strategic lens on growth and timing.
Understand asset value in the current market - and what levers to pull to increase it.
Our Team
Rob Rader
David Romero
Rob Rader
Rob Rader is the Founder and Principal Broker of Topside Real Estate with over two decades of experience in Orange County’s commercial real estate market.
Since starting in 2002 while at USC, Rob has closed more than 1,000 transactions—from small leases to multimillion-dollar investment sales. A former competitive sailor, Rob brings strat
Rob Rader is the Founder and Principal Broker of Topside Real Estate with over two decades of experience in Orange County’s commercial real estate market.
Since starting in 2002 while at USC, Rob has closed more than 1,000 transactions—from small leases to multimillion-dollar investment sales. A former competitive sailor, Rob brings strategy, transparency, and perseverance to every deal.
He specializes in office and industrial properties and works with a trusted network to support projects across asset types. Rob lives in Newport Beach with his wife and son and enjoys sailing and surfing in his free time.
Mac Mace
David Romero
Rob Rader
Mac Mace is a Director at Topside Real Estate with over a decade of experience in office leasing and sales across Southern California.
Since entering the industry in 2014, he has completed more than 500,000 square feet in lease transactions and over $100 million in sales.
Mac began his career at Colliers International and most recently ser
Mac Mace is a Director at Topside Real Estate with over a decade of experience in office leasing and sales across Southern California.
Since entering the industry in 2014, he has completed more than 500,000 square feet in lease transactions and over $100 million in sales.
Mac began his career at Colliers International and most recently served as Vice President at Windwater Real Estate. Known for his collaborative approach and sharp execution, he focuses on strategic growth and building strong client relationships.
Mac lives in Orange County with his wife and kids and enjoys golfing and sailing.
David Romero
David Romero
David Romero
David Romero is a Director at Topside Real Estate and brings 20+ years of experience in leasing and sales of office and industrial properties throughout Orange County.
He began his career in 2003 and became a Shareholder at his previous firm by 2007—one of the youngest to do so. Known for his strategic thinking and relationship-driven app
David Romero is a Director at Topside Real Estate and brings 20+ years of experience in leasing and sales of office and industrial properties throughout Orange County.
He began his career in 2003 and became a Shareholder at his previous firm by 2007—one of the youngest to do so. Known for his strategic thinking and relationship-driven approach, David is dedicated to maximizing outcomes for his clients. He combines market insight with a long- term vision to consistently deliver value. Outside of work, David enjoys time with family.