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© 2026 Sinra.ai. Prices are drawn from public permit filings and are not quotes.

From idea to done.

John R Jensen | Chicago Contractor | Sinra.ai

HomeContractorsJohn R Jensen

JR

Private Alarm ContractorPrivate Alarm Contractor Contractor

John R Jensen

Chicago business

6
projects on record: 2
areas served: Private Alarm Contractor Contractor
license type

Winston

Sinra's conciergeOnline now

Considering John R Jensen? Tell me the project and I’ll check whether they’d take it at your budget.

Service areas

Loop Near North Side

Trades

Private Alarm Contractor

Recent projects

Reported costs from permit filings

Fire Alarm System Modification at 440 S LaSalle St, Chicago
Electrical

Loop · Aug 28, 2026

Cost not reported

Issued

Fire Alarm System Modification at 300 S Wacker Dr, Loop

Fire Alarm SystemsLoop · Aug 13, 2026

Cost not reported

Issued

Fire Alarm System Modification at 300 S Wacker Dr, Loop

Fire Alarm SystemsLoop · Aug 13, 2026

Cost not reported

Issued

Fire Alarm System Modification at 300 S Wacker Dr, Loop

Fire Alarm SystemLoop · Aug 13, 2026

Cost not reported

Issued

Fire Alarm System Repair at 900 N Franklin St, Chicago

Fire Alarm SystemsNear North Side · Jul 20, 2026

Cost not reported

Issued

Fire Alarm System Modification at 225 N Michigan Ave, Loop

Fire Alarm SystemsLoop · Jul 10, 2026

Cost not reported

Issued

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