US data center firm RadiusDC had acquired a carrier hotel in Atlanta, Georgia.

The company this week announced it had acquired 55 Marietta Street NW from a “European family office.”

Terms were not shared.

The 403,000 square-foot (37,440 sqm), 21-story building features a connectivity ecosystem of 22 carriers.

The facility at 55 Marietta is home to a number of colo and telecommunications firms, including CoreSite, AT&T, Cogent, Comcast, Fiberlight, Lumen, Southern Company, Verizon, Windstream, and Zayo. One of the building’s meet-me rooms is controlled by the landlord, with the other controlled by CoreSite.

RadiusDC said it is set to add 8MW of additional utility capacity, taking the site's total capacity to 18MW, to facilitate the power needs of new and existing tenants.

"This expansion is a pivotal moment for RadiusDC and the Atlanta market," said Mike Krza, CEO of RadiusDC. "We're not just increasing critical IT capacity. We are delivering essential inventory into a constrained market, leveraging 55 Marietta's unmatched connectivity to support the next generation of AI and high-performance compute. This move reinforces our commitment to providing highly connected and resilient data center solutions where our customers need them most."

IPI Partners first launched RadiusDC in 2022 as an Edge firm, focusing on metro markets. IPI was acquired by Blue Owl last year.

RadiusDC’s existing footprint includes data centers in Denver, Colorado, and Miami, Florida. The company acquired its Miami facility in August last year. It announced plans to expand its 1500 Champa facility in Denver earlier this year. The firm broke ground on a new colocation facility in Nashville, Tennessee, in September.

"The acquisition provides our core hyperscale and content customers an opportunity to expand with continuous inventory in a market where we believe options are limited," said Christopher Jensen, managing director of Blue Owl Capital. "RadiusDC was founded to help solve inventory issues in supply-constrained markets with connectivity-rich environments that our customers demand."

Akin Gump Strauss Hauer & Feld served as legal counsel to RadiusDC. Stream Realty Partners and Nelson Mullins Riley & Scarborough LLP served as advisors to the seller, a European family office.

55 Marietta Street, formerly the Fulton National Bank Building and the Bank South Building, was the tallest building in the city when completed in 1958, surpassed a few years later by One Park Tower. The site was previously the site of the US Post Office and Customs House (built 1878), which served from 1910 to 1930 as Atlanta’s City Hall. The building is across the street from Digital Realty’s 56 Marietta (ATL13) facility.