Premier Workspaces Partners with Harbor Associates to Operate Flexible Office Space in Upland

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Harbor Associates selects Premier Workspaces to manage it’s Stewart Plaza coworking suite.

"The property is beautifully maintained with communal plazas and landscaped walkways."

Harbor Associates has selected Premier Workspaces to operate its 20,200 square foot flexible workspace at 400 & 440 North Mountain Avenue in Upland.

“We’re excited about this opportunity,” said Michael Pollack, Premier’s Director of Real Estate. He continued, “Premier has been working with landlords for 19 years. With robust in-house support, Premier is well-equipped to handle the transition with everything from sales to IT under one roof.”

Amy Fuller, Premier’s SVP of Sales and Marketing, commented, “We’ve been looking at opening a center in the Upland area for a while now. Stewart Plaza is in a prime location at Mountain Avenue and Arrow Highway. It’s also in an Opportunity Zone, which provides tax benefits for small and mid-size businesses in San Bernardino County.”

Indeed, a location doesn’t get any better. Located just south of Foothill Blvd./Route 66 and nestled between the 10 and 210 Freeways in Southern California’s Inland Empire, Stewart Plaza features 85 to 1280 square foot units on flexible terms. Clients also enjoy the Spanish architecture and plenty of free open ground parking.

"The property is beautifully maintained with communal plazas and landscaped walkways. Harbor has plans for a multi-million dollar renovation for the buildings in 2021 that will offer existing and prospective clients office solutions in a new Class A environment,” said Jake Khoury, Regional Manager at Premier.

Harbor’s renovation plans include modernizing the lobbies at each building, replacing the roofs and HVAC units, and creating multiple spec suites in the buildings available for immediate occupancy for traditional office tenants. Premier will provide a highly professional setting with furnished and unfurnished private office options, flexible terms, and a shared conference room. The workspace has 39 office spaces of varying sizes and members have 24/7 key-card access to their offices as well as reciprocal privileges at more than 90 other Premier Workspace shared workspaces throughout the country.

Tiarna Real Estate Services, Inc. will provide property management services for the project and CBRE is leasing the traditional office/medical space for the buildings.

Schedule a touring now at (909) 312-2331

About Premier Workspaces:
Premier Workspaces ( operates one of the largest privately owned executive suite, coworking and shared workspace companies in the United States with locations in Arizona, California, Colorado, Florida, Hawaii, Illinois, Nevada, New Jersey, New York, North Carolina, Ohio, Texas, Washington, and the District of Columbia. Since 2002, Premier Workspaces has owned or operated 132 locations comprised of 2 million square feet of commercial office space.
Twitter: @PWSpaces
Facebook: @PremierWorkspaces
Instagram: @PremierWorkspaces

About Harbor Associates:
Harbor Associates, LLC ( is a value-add operating platform focused on acquiring and repositioning under-performing commercial real estate assets throughout Southern California and Denver. Harbor has been involved in the renovation, repositioning and development of 29 office projects totaling over 4 million square feet with a portfolio value in excess of $1.0B. The company is a joint venture with The Bascom Group, LLC.

About Tiarna Real Estate Services, Inc:
Tiarna Real Estate Services, Inc. ( is a comprehensive commercial real estate firm serving landlords in California, Arizona, and Colorado. We specialize in property management, brokerage, and investment services. Formed in 2000 by a close-knit group of industry veterans who share a common vision of a better style of real estate services, Tiarna’s founders remain actively involved in the daily activities of our client’s investments, providing an unparalleled level of service.

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