CoreSite Tops Out Denver data center
October 09, 2025
CoreSite
CoreSite's CH1 site in downtown Chicago was acquired for $34 million in 2007 from Marc Realty. CoreSite has more than a decade upgrading the infrastructure one floor at a time. CoreSite has since finished renovating and filling the building with colocation customers and is planning their 2nd building in Chicago.
Once owned by the Western Union company, the building was formerly known as "The Telegraph Building."
The building is next to the Chicago Stock Exchange and relatively close to 350 E Cermak Carrier Hotel.
| Distance | Site | About |
|---|---|---|
| 0.00 miles | 365 Chicago |
The site is a former Switch and Data site (also owned by Equinix for a short period.)
|
| 0.00 miles | Cogent: 427 S LaSalle | |
| 0.02 miles | QuadraNet Chicago | |
| 0.05 miles | Legacy: Chicago Byte Exchange CBE1 |
An affiliate of real estate firm Prime Group bought an office building in Chicago from options exchange company Cboe Global Markets for $12 million.
|
| 0.13 miles | DataBank (ORD1) 600 S Federal | |
| 0.14 miles | Digital Realty: Chicago ORD11 | |
| 0.14 miles | Colocation America CH2 | |
| 0.14 miles | Cogent: 600 S Federal | |
| 0.14 miles | Lumen Chicago 5 | |
| 0.22 miles | Netrality Chicago: 717 S Wells |
The 10 story building was constructed in 1923 and eventually was converted into a data center.
|
| 0.23 miles | Cogent: 216 W Jackson | |
| 0.24 miles | Crown Castle 725 S Wells |
|
| 0.24 miles | 725 S Wells - 1547 Critical Systems |
In 2025, a joint venture formed by Harrison Street Real Estate Capital, LLC and fifteenfortyseven Critical Systems Realty (“1547”) acquired this data center from CIM Group.
|
| 0.29 miles | Verizon: 140 S Dearborn | |
| 0.56 miles | DataBank (ORD2) 840 S Canal |
|
| 0.56 miles | Server Farm Realty 840 South Canal |
4 MW Critical Load on Each Floor (Floors 1-5)
130-160 Watts per Raised Floor SF
|
| 0.59 miles | Lumen Chicago 6 |
|
| 0.65 miles | First Communications Chicago | |
| 0.66 miles | TierPoint Chicago Polk |
|
| 0.68 miles | EXA - 111 North Canal |
Former GTT suite
|
| 0.68 miles | Lumen Chicago 1 |
|
| 0.71 miles | Lumen Chicago 3 |
|
| 1.04 miles | CoreSite Chicago CH2 |
In February 2018, CoreSite acquired a two-acre land parcel in downtown Chicago, Illinois, on which CoreSite built CH2, a greenfield development of a 175,000-square-foot, turn-key, four-story data center supporting 18 critical megawatts of power capacity. The building was completed in June 2020.
|
| 1.58 miles | Lumen Chicago 4 | |
| 1.66 miles | Colocation America CH1 |
|
| 1.66 miles | Equinix Chicago CH1, CH2, & CH4 |
Equinix distinctly separates CH1, CH2, and CH4 into separate data centers, but in reality, the sites are in the same building.
|
| 1.66 miles | Digital Realty: ORD10 |
Digital Realty acquired the colocation services business of Hivelocity in 2025.
|
| 1.66 miles | Centersquare: Chicago ORD1 |
Centersquare's ORD1 site is located in the heart of the Chicago Financial District on the 7th floor of an 8-story building on a fiber-linked campus.
|
| 1.66 miles | Steadfast Chicago 350 E Cermak |
|
| 1.68 miles | Deft: Downtown CH1 | |
| 1.68 miles | Centersquare: Chicago ORD1(B, C & D) |
Digital Realty Trust owns the building at 350 Cermak and is CTL's Landlord.
|
| 1.73 miles | Lumen Chicago 2 | |
| 2.38 miles | Metro Edge: Illinois Medical District (IMD) |
Commercial real estate investment firm Metro Edge Development is building a data center in Chicago, Illinois.
|
| 2.88 miles | QTS: Chicago 2 |
QTS is developing 366,000 sq ft (34,000 sqm) of data center space across three stories, alongside 80,000 sq ft (7,432 sqm) of office and loading areas in its Chicago Campus.
|
| 2.97 miles | QTS: Chicago 3 |
QTS plans to build another data center building on its Chicago Campus.
|
| 3.00 miles | QTS: Chicago Campus |
The campus was a former Sun Times Press Facility and was acquired in 2014
|
| 5.61 miles | 1547 Chicago Midway Technology Centre |
In 2025, a joint venture formed by Harrison Street Real Estate Capital, LLC and fifteenfortyseven Critical Systems Realty (“1547”) acquired this data center from CIM Group.
|
| 10.44 miles | Related Digital: Chicago, IL |
Related Digital is planning a 430-acre campus in Chicago, Illinois, at the old US Steel South Works location.
|
| 10.47 miles | Related Digital: Chicago Expansion | |
| 11.77 miles | Lumen Broadview | |
| 12.17 miles | Tierpoint Chicago West | |
| 12.18 miles | Digital Realty: Franklin Park Expansion |
Digital Realty acquired two land parcels near their existing Franklin Park campus in separate transactions on July 2025, for a total of approximately $18 million.
|
| 12.23 miles | Digital Chicago Franklin Park Campus on Grand Ave - Digital Realty |
Digital Chicago is a master-planned 40-acre campus in the Village of Franklin Park. The campus has 3 existing buildings, totaling 574,994 sqft
|
| 12.24 miles | Digital Realty: ORD14 | |
| 12.25 miles | Digital Realty: ORD13 | |
| 12.27 miles | Digital Realty: Chicago ORD12 | |
| 12.39 miles | Digital Realty: ORD15 |
In 2017, Digital Realty acquired the former Motorola Headquarters site in Franklin Park and subsequently converted it into a data center.
|
| 12.89 miles | Digital Crossroad: Hammond, IN (Phase 2) |
Digital Crossroad is planning to expand its campus in Hammond, Indiana. The company plans to add another 180,000 sq ft (16,720 sqm) building in the second phase.
|
| 12.99 miles | Digital Crossroad (Indiana NAP) |
The facility (DX-1) is a 105,000 square foot data center located on the former State Line Generating Plant, Hammond, IN.
|
| 14.74 miles | 505 N Railroad Ave - Digital Realty |
The Digital Chicago Campus covers 21 acres of land with access to major fiber networks and can support up to 8 MW of IT load at N+1 redundancies.
|
| 14.92 miles | Aligned Chicago ORD-01 |
Aligned's ORD-01 data center is a state-of-the-art facility located in Northlake, IL, just outside of downtown Chicago. At full build, Aligned’s Chicago campus covers 520,000 sq. ft. and offers ~ 100 MW of critical load.
|
| 14.95 miles | Aligned ORD-02 |
Aligned's ORD-02 is a data center located in Northlake, IL near downtown Chicago. Part of Aligned's 18.5-acre hyperscale campus.
|
| 14.97 miles | DataBank (ORD4) Oak Brook |
|
| 14.97 miles | Verizon: Swift Dr |
|
| 14.97 miles | LexusNexis Oak Brook | |
| 15.13 miles | Hyperscale Data Center Request Dataset |
|
| 15.19 miles | T5: Chicago lll |
T5@Chicago III will be build-to-suit, with the company spending more than $500 million to develop a three-story, 250,000 sq ft facility for multi-tenant or single-tenant operations.
|
| 15.84 miles | Iron Mountain Chicago |
First announced in 2018, the former Hart Schaffner Marx suit factory started construction in 2024.
|
| 15.99 miles | Server Farm Oak Brook |
The campus was originally built as the corporate headquarters of the Chicago Bridge & Iron Company (CB&I).
|
| 15.99 miles | US Signal Oakbrook IL01 |
800a 480V 3 phase
450kW diesel generator with 24 hour run time at full load
500kVa UPS capacity with battery backup
|
| 15.99 miles | Verizon: (Oak Brook) | |
| 16.11 miles | NYI Chicago (Oak Brook) | |
| 18.09 miles | TA Realty: Elk Grove |
TA Realty is constructing a 45-acre data center campus at the corner of Elmhurst Road and Old Higgins Road. The development includes four two-story buildings and an electrical substation.
|
| 18.11 miles | Equinix Chicago CH7 |
|
| 18.40 miles | T5: Chicago V |
T5 Data Centers has secured land in Elk Grove Village to build its upcoming CHI V data center. The planned 220,000 square foot (20,438 sqm) facility is expected to be operational by 2028.
|
| 18.41 miles | CyrusOne: Wood Dale CHI6 |
CyrusOne is developing a 62-acre campus in Wood Dale, Illinois, with plans to construct six data center buildings encompassing approximately 1.4 million square feet.
|
| 18.46 miles | Element Critical CH1 |
Element Critical acquired the site in January 2019 from Sungard. The facility was previously known as SunGard Wood Dale (711).
|
| 18.49 miles | Element Critical CH2 |
Element Critical acquired the site in January 2019 from Sungard. The facility was previously known as SunGard Wood Dale (341).
|
| 18.54 miles | EdgeConneX CHI01 |
|
| 18.57 miles | EdgeConneX: CHI03 |
EdgeConneX CHI03 is a new 167,000-square-foot, two-story data center building on its Elkgrove campus near Chicago.
|
| 18.59 miles | Centersquare: Chicago ORD2 |
Cyxtera's CH3 Elk Grove site is across the street from the Digital Realty Chicago campus (former Dupont Fabros) and close to Equinix CH3.
|
| 18.64 miles | Stream Chicago I |
Free-Standing, Data Center Designed to Tier III Standards
|
| 18.64 miles | EdgeConneX CHI02 | |
| 18.68 miles | 2299 Busse (CH2) Digital Realty |
|
| 18.70 miles | Equinix: CH5 |
Equinix has started construction on a new 195,000-square-foot, two-story data center in Elk Grove, Chicago. This new facility is being built right next to their existing CH3 data center.
|
| 18.74 miles | Equinix Chicago CH3 |
|
| 18.83 miles | Stream Chicago II |
Stream Data Centers' Chicago II data center in Elk Grove Village, Illinois is a 226,000 square foot facility.
|
| 18.85 miles | Rackspace Elk Grove ORD1 | |
| 18.87 miles | Digital Elk Grove Village Campus |
Digital Realty Trust's Chicago campus is massive and is split among 3 buildings. The campus was acquired from Dupont Fabros in September 2017.
|
| 18.87 miles | HostPapa CH1 |
Formerly known as "ColoCrossing CH1"
|
| 18.87 miles | Deft: Elk Grove DF-CH1 |
|
| 18.89 miles | 2200 Busse Rd (CH1) DRT | |
| 18.97 miles | 1450 E Devon Ave (CH3) DRT | |
| 19.02 miles | Stream: Chicago III DC2 |
Stream DC aims to demolish around 55 Elk Grove residential properties to develop a three-building data center campus with an on-site substation. The three buildings will total more than 2 million sq ft.
|
| 19.03 miles | Stream: Chicago III DC3 |
Stream DC aims to demolish around 55 Elk Grove residential properties to develop a three-building data center campus with an on-site substation. The three buildings will total more than 2 million sq ft.
|
| 19.11 miles | Stream: Chicago III |
Stream DC aims to demolish around 55 Elk Grove residential properties to develop a three-building data center campus with an on-site substation. The three buildings will total more than 2 million sq ft.
|
| 19.26 miles | Stack: CHI02 |
Data center firm Stack Infrastructure is expanding its footprint in Chicago, Illinois with a new data center in Elk Grove Village, known as CHI02.
|
| 19.35 miles | STACK Chicago CHI01 |
|
| 19.43 miles | DigiCo: Chicago |
The facility sits on a ten-acre site and will serve as a flagship asset in HMC Capital's newly established DigiCo Infrastructure REIT.
|
| 19.45 miles | STACK CHI01B |
STACK INFRASTRUCTURE CHI01B Chicago Data Center is located at 1441 Touhy Avenue, Elk Grove Village, IL, which currently offers 24 MW of critical power and 221,000 square feet of space.
|
| 19.45 miles | 360TCS-Lombard | |
| 19.45 miles | Digital Fortress: Chicago Lombard | |
| 19.53 miles | Hyperscale Data Center Request Dataset | |
| 19.72 miles | CenturyLink: Arlington Heights | |
| 19.77 miles | Prime Elk Grove |
Prime Data Centers is building a 750,000 square foot hyperscale data center campus in Elk Grove Village (Chicago), Illinois, which will comprise an investment of around $1 billion.
|
| 19.77 miles | CloudHQ: Mount Prospect ORD2 |
CloudHQ is building a $2.5 billion data center campus at the former United Airlines world headquarters office campus in Mount Prospect, Illinois.
|
| 19.81 miles | Prime: ORD01-03 |
Building C will be another three-story construction, offering 294,429 gross square feet of space.
|
| 19.85 miles | Prime: ORD01-02 |
Building B will be another three-story construction, offering 279,360 gross square feet of space.
|
| 19.87 miles | CloudHQ Mount Prospect ORD3 |
CloudHQ is building a $2.5 billion data center campus at the former United Airlines world headquarters office campus in Mount Prospect, Illinois.
|
| 19.94 miles | CloudHQ: Mount Prospect ORD1 |
CloudHQ is building a $2.5 billion data center campus at the former United Airlines world headquarters office campus in Mount Prospect, Illinois.
|
CoreSite Realty is a data center REIT with a focus on network dense buildings. The company operates the Any2 Peering Exchange, which is the largest Internet Exchange in the Western US.
CoreSite Realty Corporation was founded in 2001 as CRG West, a portfolio company of The Carlyle Group. CRG West initially started with two data center buildings; One Wilshire in Los Angeles and 55 South Market in San Jose. The buildings were popular network interconnection and peering points. Although 55 S Market has declined as an interconnection point, One Wilshire continues to be a popular building for network interconnection.
In August, the company sold the One Wilshire Building to Hines REIT for $287 million. The large transaction gave CRG West additional capital to fund the company's growth into new markets.
In May, CRG West acquires buildings in Chicago (for $34 million) and Sommerville just outside of Boston. The Chicago building at 427 S LaSalle was originally designed and built by Western Union. Western Union buildings have traditionally been converted into Carrier Hotels because the telegraph infrastructure with their risers of conduits works well for the telecom industry. The facility is situated across from One Financial Plaza and adjacent to the Chicago Board of Trade.
CoreSite Boston at 70 Innerbelt Road, Somerville, MA is located less than two miles from downtown Boston and Cambridge. The large building has SunGard and Internap as significant tenants also offering colocation
CRG West acquired their Reston facility at 12100 Sunrise Valley.
CRG West rebranded as CoreSite.
In September, CoreSite became publicly traded on the New York Stock Exchange (NYSE: COR). The Carlyle Group still owned ~50% of the newly public company at the time of the IPO. The Carlyle Group has since reduced their ownership to less than 30%.
In April, CoreSite acquired Comfluent and their two Denver data centers. The data centers were small, but pivotal to the Denver Interconnection and Peering Market. DE1 is located in 910 15th Street, Denver's Telecom Hotel, the Denver Gas & Electric Building (DGEB.) Comfluent was the defacto meet me room for the building. DE2 was 639 E 18th Ave, which was adjacent to Level 3's Denver Gateway site.
CoreSite was headquarted in Denver, but until 2012 did not have any data centers in Colorado.
SV5 was built and leased to a single tenant
Tom Ray, CoreSite's CEO since inception retired. Paul Szurek became CoreSites new CEO.
In August, Sunrise Technology Park (STP) was acquired for $60 million with a plan to significantly expand the campus.
12100 Sunrise Valley was first acquired in 2008 and CoreSite has since turned the Reston site into a campus. The company constructed a building (VA2) in the parking lot. In 2018, Coresite acquired a 22-acre lot a few blocks away at 12379 Sunrise Valley Drive. The lot will serve to virtually expand the Reston Campus.
The development has four phases and involves building new 3-story data centers and demolishing the old buildings. CoreSite has begun work on VA3 on the new lot.
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