Alpharetta's GA 400 Center Adds 13 New Leases
July 25, 2026 |

Alpharetta’s GA 400 Center Adds 13 New Leases

Third & Urban | Georgia 400 Center

Barely a year after buying the 430,000-square-foot campus, the developer has signed 13 leases — roughly a quarter of the property — led by cybersecurity firm Barracuda Networks.

Momentum in North Fulton is showing up where it counts: on signed leases. Third & Urban — the Atlanta-based developer behind the Beltline’s Westside Paper and Common Ground — is on a leasing roll in Alpharetta, announcing this week that it has signed 13 new leases at GA 400 Center totaling roughly 108,000 square feet. That activity claims about one-fourth of the 430,000-square-foot office campus in less than a year of ownership.

Third & Urban | Georgia 400 Center

The composition of the deals is as encouraging as the volume. According to Cushman & Wakefield, which represented the property, the 108,000 square feet breaks down into commitments from seven new companies (about 58,000 square feet) plus renewals and expansions from existing tenants (about 50,000 square feet) — a healthy mix of fresh demand and companies choosing to grow in place. Three existing tenants expanded their footprints, a quiet vote of confidence that often says more about a building than any new signing.

Third & Urban | Georgia 400 Center

The headline tenant is a marquee name. Barracuda Networks, a global cybersecurity and data-protection company, signed the largest new lease at 22,300 square feet — the kind of technology employer that anchors a corridor and helps recruit the next one. Joining it is Smithbuilt Construction Group, which took 10,900 square feet, while a newly completed floor of spec suites has already drawn pre-leases from RBC Wealth Management, Envision Cold, and Peachtree Town & Country.

“The leasing velocity we’ve experienced over the past year reinforces that companies continue to prioritize well-located, high-quality workplaces,” said Third & Urban vice president Mitchell Braun. It is a telling read on the market. When premium space along GA 400 fills this quickly, it points to the fundamentals North Fulton is known for: access to exceptional talent, modern and well-connected office product, and a business climate in a class of its own.

Location is doing real work here. Third & Urban acquired the three-building, 24-acre park last July as part of a push to reposition undervalued commercial assets across the Southeast, and GA 400 Center’s address explains the appeal — steps from Highway 400 at Haynes Bridge Road, across from the mixed-use Gathering and Toll Brothers at Lakeview, and just south of the billion-dollar Avalon district and Alpharetta City Center. To match the demand, the developer is investing in the experience, too: a new outdoor courtyard and elevated tenant amenity lounge are under construction, with lobby refreshes across all three buildings beginning this summer.

For Alpharetta — already home to a deep bench of technology, fintech and professional-services firms — the leasing run reinforces the city’s standing as a magnet for growing companies, and North Fulton’s standing as the place they choose to do it. It is one more example of a region that keeps building forward, one investment at a time.

Credit – Alpharetta’s GA 400 Center claims momentum with 13 fresh leases | Urbanize Atlanta