Markley owns and operates the largest carrier neutral data center in New England, One Summer Street.
1991: Markley Group was founded by CEO Jeff Markley.
1997: Markley purchased One Summer Street in Boston.
June 2015: Company announced a new data center in Lowell MA. (r1)
Markley’s data center in Lowell, MA encompasses 352,000 square feet of highly secured white and mechanical space. In addition to carriers originating at local POPs, the facility offers the benefits of three diverse dark fiber networks connected directly to Markley’s Boston location.
In early 2026, Jeffrey D. Markley, CEO of the Markley Group, purchased the industrial property at 90 Bolt Street alongside adjacent industrial plots for a combined $5.6 million.
In early 2026, Jeffrey D. Markley, CEO of the Markley Group, purchased the retired 85-megawatt Tanner Street Generating Station and adjacent industrial parcels on Bolt Street for $5.6 million.
Markley's One Summer Street is Boston's carrier hotel. The building is the largest multi-tenant telecommunications facility in New England. Home to over 90 different carriers and network providers, One Summer offers clients unlimited bandwidth, high-density connectivity, unsurpassed infrastructure, abundant and reliable power, and true network diversity
