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BUILDING · IL

427 South LaSalle data-center host

CoreSite · Developer or operator

Source record · Independent review pending

Status in source
unknown
Total facility power
Not reported
IT capacity
Not reported
Reported opening year
Not reported
Building floor area
Not reported
Mapped footprint area
20,606 sq ft
Location precision
building
Location
427 South LaSalle Street, Chicago, Cook, IL

Footprint area measures the ground covered by the polygon. It is not total floor area.

Operator, brand or owner name as tagged in OSM. Current ownership and commissioning require review.

Evidence

427 South LaSalle data-center host primary identity evidence

City footprint retains 401 S LA SALLE as its legacy address. Exact 427 S LA SALLE city permit point and the existing CH1 point are both contained in this one outline. Permit 101070387 explicitly identifies an existing data center. Operator and owner-reported CH1 property agree on 427. No competing roof or plan.

Primary building use and address: CoreSite CH1 - 427 S LaSalle St, Chicago, IL

operator data-center space inside the host. Effective date not supplied.

City footprint retains 401 S LA SALLE as its legacy address. Exact 427 S LA SALLE city permit point and the existing CH1 point are both contained in this one outline. Permit 101070387 explicitly identifies an existing data center. Operator and owner-reported CH1 property agree on 427. No competing roof or plan. Physical host identity only. Data-center use may occupy a tenant floor or part of a mixed-use building. Owner-reported annual energy and area are not independent measurements, capacity or opening. No currentness inferred from retrieval. GIS outline is not a surveyed wall or gross floor area. No independent external audit.

Primary source ↗

data-center operator: CoreSite

role in the source-defined data-center space, not whole-host ownership. Effective date not supplied.

Role applies to the source-described space. Whole-building ownership, tenancy area and capacity are not inferred.

Primary source ↗

City footprint retains 401 S LA SALLE as its legacy address. Exact 427 S LA SALLE city permit point and the existing CH1 point are both contained in this one outline. Permit 101070387 explicitly identifies an existing data center. Operator and owner-reported CH1 property agree on 427. No competing roof or plan. Physical host identity only. Data-center use may occupy a tenant floor or part of a mixed-use building. Owner-reported annual energy and area are not independent measurements, capacity or opening. No currentness inferred from retrieval. GIS outline is not a surveyed wall or gross floor area. No independent external audit.

427 South LaSalle data-center host primary identity evidence

City footprint retains 401 S LA SALLE as its legacy address. Exact 427 S LA SALLE city permit point and the existing CH1 point are both contained in this one outline. Permit 101070387 explicitly identifies an existing data center. Operator and owner-reported CH1 property agree on 427. No competing roof or plan.

Primary building use and address: 101070387 | EXISTING DATA CENTER

permit 101070387, existing data-center use, second-floor alterations; issue date is not opening. Source date 2025-08-19.

City footprint retains 401 S LA SALLE as its legacy address. Exact 427 S LA SALLE city permit point and the existing CH1 point are both contained in this one outline. Permit 101070387 explicitly identifies an existing data center. Operator and owner-reported CH1 property agree on 427. No competing roof or plan. Physical host identity only. Data-center use may occupy a tenant floor or part of a mixed-use building. Owner-reported annual energy and area are not independent measurements, capacity or opening. No currentness inferred from retrieval. GIS outline is not a surveyed wall or gross floor area. No independent external audit.

Primary source ↗

City footprint retains 401 S LA SALLE as its legacy address. Exact 427 S LA SALLE city permit point and the existing CH1 point are both contained in this one outline. Permit 101070387 explicitly identifies an existing data center. Operator and owner-reported CH1 property agree on 427. No competing roof or plan. Physical host identity only. Data-center use may occupy a tenant floor or part of a mixed-use building. Owner-reported annual energy and area are not independent measurements, capacity or opening. No currentness inferred from retrieval. GIS outline is not a surveyed wall or gross floor area. No independent external audit.

427 South LaSalle data-center host municipal geometry

One official physical building outline accepted after source and overlap review.

bldg_id: 868403

municipal footprint identity context. Effective date not supplied.

Primary source ↗

City footprint retains 401 S LA SALLE as its legacy address. Exact 427 S LA SALLE city permit point and the existing CH1 point are both contained in this one outline. Permit 101070387 explicitly identifies an existing data center. Operator and owner-reported CH1 property agree on 427. No competing roof or plan. Physical host identity only. Data-center use may occupy a tenant floor or part of a mixed-use building. Owner-reported annual energy and area are not independent measurements, capacity or opening. No currentness inferred from retrieval. GIS outline is not a surveyed wall or gross floor area. No independent external audit.

Public registry · doc-4ba6b33fff5a16916152 ↗Retrieved 2026-09-17 · public-record-facts
Fields supported by this source

location.address

Operator disclosure · parent-municipal-host-round02:chicago-ch1:0 ↗Retrieved 2026-09-17 · company-public
Fields supported by this source

location.address, name, source_associations

Public filing · parent-municipal-host-round02:chicago-ch1:1 ↗Retrieved 2026-09-17 · public-record-facts
Fields supported by this source

location.address, name, source_associations

Government GIS · parent-municipal-host-round02:chicago-ch1:geometry ↗Retrieved 2026-09-17 · public-record-facts
Fields supported by this source

location.lat, location.lng, location.precision, source_associations

Geographic calculations

point within source polygon

geodesic area of source footprint; not floor area

point intersects Census county boundary, historical 2010 boundary snapshot

Imagery review

No imagery review has been recorded for this location.

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DATED IMAGERY

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Imagery can show structures and ground disturbance. It cannot by itself establish the operator, electricity demand, or whether servers are running.

No timeline has been collected for this record yet.