Generator Permit Requirements in Evanston, Wilmette & Skokie

Evanston, Wilmette, and Skokie all require a permit before you install a standby generator. Every home needs an electrical permit for the transfer switch and wiring, and most also need a gas permit for the new fuel line. Beyond that shared baseline, each village adds its own layer. Evanston can pull in a historic district review. Wilmette publishes exact lot line and noise numbers. Skokie treats the generator's decibel rating as part of the permit packet itself. A contractor who only works in one of these towns can get your project wrong in another.

Why Do These Three Villages Review Generators So Closely?

A standby generator connects to your home's electrical panel and, in almost every case, to your gas line, whether that is Nicor or North Shore Gas. That combination is why a village inspector gets involved twice: once for the electrical grounding and wiring, and once for the gas piping and pressure test. Evanston, Wilmette, and Skokie also all run their own zoning check on where the unit can sit, since a generator that passes the fire code can still fail a lot line setback or a noise limit.

Applications have picked up across the North Shore since last July's multi-day ComEd outages, and village staff in all three towns report busier review queues than a normal summer. For the statewide basics of what a generator permit covers, see our Illinois generator permit guide. This article covers the three villages where local rules differ enough to need their own breakdown.

What Does Evanston Require for a Generator Permit?

Evanston requires a building permit and an electrical permit for a residential standby generator, filed through the city's online Citizen Portal. The city's Building and Development Services team handles review from the Building Permits office at Lorraine H. Morton City Hall, 909 Davis Street. You can reach the Permit Desk at 847-448-8207. Since February 2025, most permit applications, including generators, move through the Citizen Portal instead of a paper counter visit.

We could not confirm a current flat electrical permit fee for a residential generator from Evanston's published fee schedule, so treat any dollar figure you see on a contractor blog with caution. Confirm the exact cost with the Permit Desk before you budget.

If you live in Evanston, our Evanston generator page covers sizing and installation timelines beyond the permit itself.

What Does Wilmette Require for a Generator Permit?

Wilmette requires a Residential Permits application for a standby generator, along with a plat of survey and spec sheets for the unit and transfer switch. The village's Community Development Department handles review and can be reached at 847-853-7550. Wilmette also publishes some of the clearest generator placement rules on the North Shore, which we cover in the setback section below.

Submittals go through the Wilmette Residential Permits page, and the village's construction handbook walks through the full document checklist. As with Evanston, we could not confirm an exact current dollar fee for a residential generator's electrical permit, so verify the number directly with the Community Development Department before you finalize a budget.

If you live in Wilmette, our Wilmette generator page walks through what a typical install involves on top of the permit.

What Does Skokie Require for a Generator Permit?

Skokie splits generator work into separate trade permits, since the village treats electrical, plumbing, mechanical, and fire protection as distinct applications. Skokie has adopted the 2020 National Electrical Code with local amendments, which governs the wiring and grounding inspection. The Building and Zoning Division works out of Skokie Village Hall, 5127 Oakton Street, and can be reached at 847-933-8223.

Skokie's zoning code sets a specific number that Evanston and Wilmette do not spell out the same way: under Chapter 118 of the Skokie zoning ordinance, a standby generator cannot exceed 70 decibels at full load, based on the manufacturer's own rating. You submit that spec sheet with your permit application, so the village checks the number before installation rather than after a neighbor complains.

If you live in Skokie, our Skokie generator page covers what a typical local install includes.

How Do the Three Villages Compare?

How Do Setback and Noise Rules Differ Between the Three Villages?

Setback and noise rules are where these three villages pull apart the most, and where a generator model that works fine on one lot can fail the review on a narrower one nearby.

Wilmette is the most specific of the three. A standby generator cannot go in a front yard or in a side yard that faces a street. It must sit at least 15 feet from the side and rear lot lines, and it cannot exceed 70 decibels at the receiving lot line under normal load. On the tight side yards common in older Wilmette blocks, that 15 foot number can rule out more spots than homeowners expect.

Skokie enforces its limit through the equipment spec sheet rather than a fixed distance. The 70 decibel cap under Chapter 118 applies at full load, using the manufacturer's own rating, and you submit that number with your application. A quieter unit gives you more flexibility on where it can sit relative to your property line and your neighbor's windows.

Evanston has not published a generator-specific setback table the way Wilmette has. Placement there defaults to the statewide baseline set by NFPA 37, which allows a listed standby unit as close as 18 inches from the house wall and requires at least 5 feet of clearance from any window, door, or vent that opens. On a lot inside a historic district, the Preservation Commission can also weigh in on where the unit sits if it will be visible from the street, on top of the zoning baseline.

How Does the Permit and Inspection Process Work?

The broad shape of the process is similar in all three villages. The paperwork, the review path, and the timeline are not.

• 1. Site visit. Your installer checks your electrical panel, gas meter capacity, and possible generator locations on your lot.
• 2. Packet prep. A plat of survey, site plan, single line electrical diagram, and equipment spec sheets get assembled to match each village's format.
• 3. Village review. Evanston routes generator applications through its Citizen Portal. Wilmette reviews the Residential Permits packet against its setback and noise rules. Skokie reviews electrical, plumbing, and mechanical trade permits separately, and checks the noise spec sheet against Chapter 118. In Evanston, a landmark or historic district property also needs Preservation Commission sign off before the building permit can move forward.
• 4. Install. The concrete pad, gas line, wiring, and automatic transfer switch go in once the permit is issued.
• 5. Inspections. An electrical inspection checks wiring and grounding. A gas inspection pressure tests the new fuel line.
• 6. Close out. The village marks the permit final. Keep that record with your house paperwork for resale and insurance purposes.

For how permit and inspection costs fit into the bigger picture, see our whole house generator cost guide for Illinois.

What Happens If You Skip the Permit in These Villages?

Any of the three villages can issue a stop work order once an inspector notices an unpermitted generator. You may have to open up finished work or move the unit entirely before a late inspection will pass. In Evanston, skipping the Certificate of Appropriateness on a landmark or historic district property adds a separate compliance problem on top of the missing building permit.

The bigger risk usually shows up later. An insurance company can question a claim tied to unpermitted gas or electrical work. A home sale can stall when a buyer's attorney finds an open or missing permit on file with the village. A generator installed too close to a neighbor's window without ever going through Wilmette's or Skokie's noise review is a dispute waiting to happen. The permit itself is the cheapest part of the whole project.

Generator Permit Questions, Answered

Do I need a permit to install a generator in Evanston, Wilmette, or Skokie?

Yes. All three villages require an electrical permit for a standby generator, and most homes also need a gas permit for the new fuel line. Skokie treats electrical, plumbing, mechanical, and fire protection as separate trade permits, so a generator project can touch more than one application.

Does a historic district in Evanston affect my generator permit?

It can. If your home is an Evanston landmark or sits in a local historic district, exterior work that is visible from the street needs a Certificate of Appropriateness from the Preservation Commission before your building permit can move forward. The Commission meets on the second Tuesday of the month, and applications are due 15 business days before that meeting.

How far from the lot line does a generator have to be in Wilmette?

Wilmette keeps standby generators out of the front yard and out of a side yard next to a street. The unit must stay at least 15 feet from the side and rear lot lines and cannot exceed 70 decibels at the receiving lot line under normal load.

What is Skokie's noise limit for a standby generator?

Skokie's zoning code caps a standby generator at 70 decibels at full load, using the rating on the manufacturer's spec sheet. You submit those specs with your permit application so the village can check the number before the unit goes in.

Can I use the same generator permit application in Evanston, Wilmette, and Skokie?

No. Each village runs its own permit process and its own form. Evanston now takes applications through its online Citizen Portal, Wilmette uses a Residential Permits application with a plat of survey, and Skokie splits the work into separate electrical and other trade permits. Submitting the wrong form is a common cause of delay.

Get a Permit Ready Quote

Permits are where a good installer proves they know your town. If you want one local licensed and insured electrician partner to handle the survey, the packet, the install, and every inspection in Evanston, Wilmette, or Skokie, request a quote with the form on this page. It takes about a minute, and your information is never sold.