Backup Generator Installation Cost in Chicago, IL
Based on 602 backup generator installation building permits filed in Chicago between 2015 and 2026, the typical declared project value is $10,000, with most landing between $5,000 and $15,000. These are real records from Chicago's public building-permit data, declared job values, not contractor estimates or AI guesses.
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Backup Generator Installation values over time in Chicago
Median declared value moved from $10,000 in 2021 to $12,960 in 2026, up 30% over that span. Each year below is computed from the filings that actually cleared in Chicago.
Recent backup generator installation permits in Chicago
Actual filings from Chicago's public permit records. Declared job values, not final paid prices.
| Filed | Declared value | Work described |
|---|---|---|
| 2026-04-28 | $9,336 | LINE VOLTAGE ELECTRICAL WORK. INSTALL PERMANENT-NOT REQUIRED BY CODE 10 KW OTHER GENERATOR |
| 2026-04-22 | $18,000 | LINE VOLTAGE ELECTRICAL WORK. INSTALL PERMANENT-REQUIRED BY CODE 250 KW DIESEL GENERATOR. |
| 2026-04-20 | $12,954 | LINE VOLTAGE ELECTRICAL WORK. INSTALL PERMANENT-NOT REQUIRED BY CODE 26 KW OTHER GENERATOR |
| 2026-04-17 | $10,555 | LINE VOLTAGE ELECTRICAL WORK. INSTALL PERMANENT-NOT REQUIRED BY CODE 14 KW FUEL GAS GENERA |
| 2026-04-17 | $14,585 | LINE VOLTAGE ELECTRICAL WORK. INSTALL PERMANENT-NOT REQUIRED BY CODE 24 KW FUEL GAS GENERA |
| 2026-04-17 | $5,000 | LINE VOLTAGE ELECTRICAL WORK. INSTALL PERMANENT-REQUIRED BY CODE 60 KW DIESEL GENERATOR. R |
| 2026-04-17 | $30,000 | LINE VOLTAGE ELECTRICAL WORK. INSTALL PERMANENT-NOT REQUIRED BY CODE 48 KW DIESEL GENERATO |
| 2026-03-06 | $16,985 | LINE VOLTAGE ELECTRICAL WORK. INSTALL PERMANENT-NOT REQUIRED BY CODE 24 KW FUEL GAS GENERA |
| 2026-03-04 | $20,000 | EXISTING ROOFTOP WIRELESS TELECOMMUNICATION FACILITY. T-MOBILE SITE: CH31050B. INSTALL (1) |
| 2026-01-16 | $12,965 | LINE VOLTAGE ELECTRICAL WORK. INSTALL PERMANENT-NOT REQUIRED BY CODE 18 KW FUEL GAS GENERA |
| 2026-01-16 | $11,835 | LINE VOLTAGE ELECTRICAL WORK. INSTALL PERMANENT-NOT REQUIRED BY CODE 10 KW FUEL GAS GENERA |
| 2026-01-06 | $11,212 | LINE VOLTAGE ELECTRICAL WORK. INSTALL PERMANENT-NOT REQUIRED BY CODE 18 KW OTHER GENERATOR |
| 2025-12-10 | $25,000 | SPR 2019 CBC REVISION TO PERMIT 101060449 TO INSTALL EMERGENCY BACKUP GENERATOR INCLUDING |
| 2025-10-23 | $11,023 | LINE VOLTAGE ELECTRICAL WORK. INSTALL PERMANENT-NOT REQUIRED BY CODE 22 KW OTHER GENERATOR |
| 2025-10-21 | $20,000 | LINE VOLTAGE ELECTRICAL WORK. INSTALL TEMPORARY 1000 KW DIESEL GENERATOR. RECEPTACLE OUTLE |
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Add your price →How to read these numbers
A permit's declared value is the job cost the owner or contractor stated when they pulled the permit. It tracks the real cost of the work but can run a bit under what was actually paid, since it often leaves out some labor and finish costs. Treat the range as a grounded starting point. What backup generator installation actually costs in Chicago comes down to home size, materials, and scope.
Where this comes from
Every figure is pulled from Chicago's public building-permit records and classified by the work described. Nothing is estimated or AI-generated. How the data works. The moment a Chicago homeowner adds a real receipt, this page upgrades to show what neighbors actually paid next to these permit values.
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