Standby generators are showing up in more West Michigan listings for a simple reason: outages happen, and people want their heat, sump pump, refrigeration, and internet to stay on. The problem is that “generator included” can turn into a real closing headache when the install was DIY, unpermitted, placed too close to openings, or wired in a way that creates backfeed risk.
This guide is a practical, closing-safe checklist for buyers and sellers in Greater Grand Rapids and West Michigan. It’s not a how-to install manual. Think of it as a due diligence framework that helps you avoid the two things that derail deals: safety issues and permit issues.
First: know which “generator setup” you’re dealing with
1) Portable generator + inlet (or extension cords)
This is typically a smaller generator that runs manually during an outage. Some homes have a proper exterior inlet and a code-compliant transfer method. Some do not. Portable generator safety and carbon monoxide risk are a major concern, especially when people try to run a unit in a garage or too close to the house. Federal safety guidance emphasizes operating portable generators outside only and at least 20 feet from openings. ([cpsc.gov](https://www.cpsc.gov/Safety-Education/Safety-Education-Centers/Carbon-Monoxide-Information-Center?utm_source=openai))
2) Permanently installed standby generator (whole-home or selected loads)
This is typically a fixed unit with an automatic transfer switch (ATS) or other listed transfer equipment, fueled by natural gas or propane. These installs often involve electrical, fuel, placement, and sometimes zoning considerations. Manufacturer clearance guidance and local inspection approval matter a lot here. ([kohler.com](https://www.kohler.com/content/dam/kohler-com-NA/Lifestyle/PDF/PDF-48RCLC_60RCLB_Assembly.pdf?utm_source=openai))
The two fastest ways a generator causes a real estate problem
Problem A: unsafe “backfeed” risk
Utilities and safety organizations are blunt about this: you should not connect a generator to a home electrical system without an approved transfer switch (or other listed transfer method) that isolates the home from utility lines. This is about protecting utility crews and preventing equipment damage. ([consumersenergy.coop](https://www.consumersenergy.coop/generator-safety?utm_source=openai))
Problem B: missing permits and lack of final inspection
In Michigan, electrical work generally requires a permit. Michigan’s LARA Bureau of Construction Codes summarizes it clearly: you cannot equip a building with electrical conductors/equipment or make an alteration, change, or addition without receiving a permit for the work. ([michigan.gov](https://www.michigan.gov/en/lara/bureau-list/bcc/Sections/Permit-Section/permits/electrical-permit-information?utm_source=openai))
In practice, generator projects often touch more than one permit category. For example, if a standby generator involves fuel piping or related mechanical scope, a mechanical permit may apply. LARA’s mechanical permit overview explains the Michigan Mechanical Code regulates mechanical systems and includes appliances utilizing gas or other fuels (among many other systems). ([michigan.gov](https://www.michigan.gov/en/lara/bureau-list/bcc/Sections/Permit-Section/permits/mechanical-permit-information?utm_source=openai))
Permitting realities in Greater Grand Rapids: the “who issues the permit?” nuance
One thing that surprises people new to the area is that permitting and inspections are not always handled directly by the city you live in.
- City of Grand Rapids: The city has its own permitting process and forms, including an electrical permit application and an online portal. ([grandrapidsmi.gov](https://www.grandrapidsmi.gov/files/sharedassets/public/gr-digital/digital-services/paper-forms/development-center/electrical-permit-application.pdf?utm_source=openai))
- Cascade area and multiple partner jurisdictions: Cascade Charter Township provides permitting and inspection services, and its electrical permit fee schedule specifically calls out “Solar / Generator Install.” ([cascadetwp.com](https://www.cascadetwp.com/reference-desk/forms%2C-fees-and-permits/cas-electrical-2022.aspx?utm_source=openai))
- East Grand Rapids example: East Grand Rapids notes that after zoning and drainage review, permit applications are forwarded to Cascade Township Inspection Services for processing and inspections. ([eastgrmi.gov](https://eastgrmi.gov/222/Building-Permits?utm_source=openai))
Deal implication: if a buyer (or lender, or insurance underwriter) asks for proof of permits, you need to know which jurisdiction’s records to pull. “I couldn’t find it on the city website” does not necessarily mean it doesn’t exist.
Closing-safe checklist: what to verify (buyers) and what to assemble (sellers)
1) Confirm the transfer method is legitimate
- Ask: Is there a transfer switch, interlock, or ATS that prevents backfeed?
- Ask for: photo of the main panel labeling, and the transfer equipment model label if accessible.
- Utilities and consumer safety guidance consistently emphasize using approved transfer equipment and professional connection methods to avoid backfeed hazards. ([consumersenergy.coop](https://www.consumersenergy.coop/generator-safety?utm_source=openai))
2) Verify permits and final approvals (not just invoices)
- Ask for: permit numbers, approved permit cards, and final inspection sign-off where available.
- Do not confuse: “my electrician is licensed” with “the job is permitted and inspected.”
- Why it matters: Michigan requires electrical permits for most installation/alteration work. ([michigan.gov](https://www.michigan.gov/en/lara/bureau-list/bcc/Sections/Permit-Section/permits/electrical-permit-information?utm_source=openai))
Local tip: if the home is in a jurisdiction that routes permits through an inspection authority (for example, East Grand Rapids and Cascade Inspection Services), you may need to request records from the inspection service rather than the city clerk. ([eastgrmi.gov](https://eastgrmi.gov/222/Building-Permits?utm_source=openai))
3) Placement and clearance: use the manufacturer’s rules, then confirm local approval
Standby generator placement is not “whatever fits.” Clearances are often driven by a combination of manufacturer instructions, fire safety standards referenced by manufacturers, and the local authority having jurisdiction.
As one example of manufacturer guidance, KOHLER’s residential placement drawings include rules like keeping the nearest window/vent/door at least 5 feet from the exhaust end, and allowing a minimum 18 inches from the structure (with notes that actual distance may vary by local codes). ([kohler.com](https://www.kohler.com/content/dam/kohler-com-NA/Lifestyle/PDF/PDF-48RCLC_60RCLB_Assembly.pdf?utm_source=openai))
Generac also publishes clearance guidance, including discussion of minimum distances such as 5 feet from openings and 18 inches to a stationary wall in certain tested configurations, and emphasizes following the applicable requirements for fire and CO risk mitigation. ([support.generac.com](https://support.generac.com/s/article/What-Should-I-Know-About-Clearance-Requirements-When-Installing-My-Generator?utm_source=openai))
- Buyer due diligence question: “Was the placement approved by inspection, and do you have documentation?”
- Seller pre-list step: pull the installation manual (or manufacturer placement sheet) for your exact model and confirm the unit is positioned accordingly, then confirm the job was finalized through inspection.
4) Fuel: natural gas vs propane is not just preference
From a transaction perspective, the key questions are not brand wars. They are ownership, supply, and what transfers.
- Propane tank ownership: Is the tank owned or leased? If leased, what is required to transfer the lease, and are there removal fees if the buyer declines?
- Delivery and capacity: What is the tank size, and what’s the refill cadence in winter if the generator runs for long outages?
- Natural gas service: Is the unit tied into existing gas service, and was that portion inspected under the appropriate permit path?
If you want a clean deal, get these answers in writing early. Surprises here tend to show up right when attorneys, lenders, or buyers are trying to finalize documents.
5) Carbon monoxide: portable generator rules are strict, and standby placement still matters
For portable generators, federal safety guidance is consistent: do not run them in a home, garage, basement, crawl space, or shed, and operate them outside and at least 20 feet away from openings. ([cdc.gov](https://www.cdc.gov/carbon-monoxide/media/pdfs/Generators_1.pdf?utm_source=openai))
For standby generators, you should still be thinking about exhaust direction and distance to openings. Manufacturer placement drawings frequently address exhaust orientation and minimum distances to windows, doors, and vents. ([kohler.com](https://www.kohler.com/content/dam/kohler-com-NA/Lifestyle/PDF/PDF-48RCLC_60RCLB_Assembly.pdf?utm_source=openai))
What I advise sellers to do before listing (the “no-drama file”)
- Permits and finals: collect permit cards and final approvals for electrical and any related scopes.
- Manuals and model info: keep the generator model/serial and the installation or placement sheet.
- Service records: if the generator is under a maintenance plan, keep the most recent service documentation available for buyer review.
- Panel labeling: make sure circuits are clearly labeled. Confusion here creates buyer anxiety during inspections.
- Clarify what’s included: generator, ATS, propane tank, buried lines, monitoring subscriptions. Put it in the listing remarks and confirm it in the purchase agreement.
None of this is about “making it fancy.” It’s about making it verifiable, so an inspector, lender, or insurance underwriter cannot derail your timeline late in the game.
What buyers should ask during due diligence
- Is the generator permanently installed standby or portable?
- What transfer equipment is installed (ATS, manual transfer switch, panel interlock), and who installed it?
- Are there permits and final inspections for the electrical work? (In Michigan, electrical permits are generally required.) ([michigan.gov](https://www.michigan.gov/en/lara/bureau-list/bcc/Sections/Permit-Section/permits/electrical-permit-information?utm_source=openai))
- Do you have manufacturer placement documentation for the model, and does the current placement match it?
- What fuel does it use, and if propane, is the tank owned or leased?
Will a generator “add value” in West Michigan?
Sometimes it helps marketability, sometimes it helps a buyer justify a premium, and sometimes it’s neutral. What it should never be is a liability. The safest posture is to treat a generator like any other high-impact system: permitted, inspected, documented, and clearly included or excluded in the contract.
Need a generator due diligence plan tailored to your property?
If you are buying a home with a generator in Greater Grand Rapids or anywhere in West Michigan, or you are selling and want to eliminate closing friction before it shows up in an inspection report, I will map out a practical verification plan: what to request, where to pull records, and how to position it cleanly in the contract.
You can also browse other West Michigan due diligence guides here.