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Portman Holdings takes mixed-use plans to outdated office complex

20-acre Brookside property in Alpharetta ripe for suburban attractions

<p>A photo illustration of Portman Holdings CEO Ambrish Baisiwala along with 3625 and 3655 Brookside Parkway in Alpharetta (Getty, Portman Holdings, Google Maps)</p>

A photo illustration of Portman Holdings CEO Ambrish Baisiwala along with 3625 and 3655 Brookside Parkway in Alpharetta (Getty, Portman Holdings, Google Maps)

Portman Holdings plans to replace an aging office complex with apartments, townhomes and retail in Alpharetta. 

The Atlanta-based developer is set to transform the Brookside Office Park into a mixed-use development aimed at meeting the growing demand for suburban housing and walkable communities, the Atlanta Business Chronicle reported. The cost hasn’t been revealed.

The Brookside office campus, which was acquired by Bridge Commercial Real Estate in 2021 for $41 million, consists of two five-story office buildings: Brookside I and II, at 3625 and 3655 Brookside Parkway. At the time, the purchase marked the company’s third asset in the suburban North Fulton submarket.  

Portman’s redevelopment proposal for the 20-acre property includes the addition of over 300 apartments and several townhomes, as well as the preservation of one office building, which will provide approximately 130,000 square feet of space.

If Portman receives the necessary zoning approvals, the redevelopment is slated to begin in summer 2026, according to Mike Greene, Portman’s senior vice president of development. The company has traditionally focused on high-profile urban developments in Atlanta, and the Brookside project represents a shift toward suburban redevelopment.

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Another developer eyeing potential in the Brookside area is Providence Group. In November, the developer received approval to replace offices at 3750 Brookside Parkway with 160 townhomes. The property , which was hit with foreclosure last year after an $11.9 million default, has been owned by Brookside Parkway Partners, an affiliate OA Management, since 2015.

As demand for office space has softened in the wake of the pandemic, many suburban office buildings are being reimagined as mixed-use properties. The Brookside district in Alpharetta is a prime candidate for such a transformation.

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The area, which spans over 150 acres, was developed in the late 1990s with office buildings and large parking lots. In 2022, the city council approved a vision for Brookside that focuses on reducing surface parking, improving walkability and introducing more housing options. 

The area is near Georgia State University’s campus, and a 30-acre park in the upscale suburb.  

— Andrew Terrell

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