Panels and Electrical Service
Subpanel installation for garages, basements and outbuildings in Grand Rapids
A subpanel adds breaker spaces where you need them, closer to the loads they serve. We check that the main service has the capacity to share, size the feeder, set the subpanel with its grounds and neutrals kept separate, and label every circuit in both panels.
Updated September 2026
- Answered 24/7
- Feeder sized for the load
- Grounds and neutrals separated
- Permit and inspection
Quick answer
A subpanel installation in Grand Rapids adds a second, smaller panel fed from the main panel to provide more breaker spaces near a garage, basement, addition or outbuilding. It adds spaces, not capacity: the main service must have spare capacity for the new loads. Typical regional installs run $500 to $1,500 depending on distance and size.
What this job is
Spaces are not the same as capacity
A full panel is a space problem. A service that cannot carry more load is a capacity problem. A subpanel solves the first and does nothing for the second, so we always run a load calculation before adding one. When capacity is fine, a subpanel near the garage or basement keeps new circuits short, tidy and easy to find. When it is not, a panel upgrade comes first.
Cost factors
What moves the price on this job
Distance from the main panel and the subpanel's size decide most of the price.
Typical regional ranges: subpanel installation $500 to $1,500 and an electrical permit $50 to $300, as planning figures rather than our price.
- 01
Distance from the main
Longer feeders need more wire and conduit.
- 02
Subpanel size
More spaces and higher ratings cost more.
- 03
Main panel capacity
If it is short, an upgrade comes first.
- 04
Detached building
Trenching and a grounding electrode add cost.
- 05
Circuits moved
Relocating existing circuits takes time.
- 06
New circuits
Each new circuit adds wire and a breaker.
- 07
Permit
Required and inspected.
What is included
What a subpanel install includes
- Load calculation on the main service
- Feeder breaker and cable sized for the subpanel
- Subpanel mounted with required working space
- Grounds and neutrals kept on separate bars
- Grounding electrode for detached buildings
- Existing circuits moved where it helps
- New circuits for the loads you planned
- Permit and inspection
- Both panel directories updated
Choosing between them
Subpanel or something else
| Option | Best for | Trade-off |
|---|---|---|
| Subpanel | Full panel, spare capacity | Adds spaces only |
| Tandem breakers | One or two extra circuits | Only where the panel allows them |
| Service upgrade | Not enough capacity | Bigger job, more cost |
The versions of this job
Garage subpanel
Garages collect loads: a freezer, an EV charger, a compressor, shop lights and receptacles for tools. A subpanel in the garage keeps those circuits short and puts a breaker within reach of the bench. We size its feeder for today's loads plus the charger or welder you mentioned, place it where it will not be blocked by cars or shelving, and leave spare spaces so the next tool does not mean another call. Garage receptacles get GFCI protection, and the charger circuit is kept separate from the tool circuits so charging never trips the saw.
Basement subpanel
Finished basements, workshops and laundry areas often end up far from the main panel, or the main panel is simply full. A basement subpanel gives the new rooms their own breakers, keeps AFCI and GFCI protection organized, and makes the circuits easy to find. We keep the required clear working space in front of it, even when walls are going up around it, because a boxed-in subpanel is one of the most common inspection failures in finished basements, and one of the most annoying to fix after drywall.
Feeder sizing
The feeder from the main panel to the subpanel sets how much the subpanel can deliver. We size the breaker and conductors to the load calculation and the distance, allowing for voltage drop on longer runs, and use conduit where the feeder crosses a garage or unfinished space. An undersized feeder is the most common mistake in do-it-yourself subpanels, and it shows up later as tripping and warm connections at both ends of the run, usually the first cold winter after it goes in.
Detached building feed
A subpanel in a detached garage, barn or workshop needs its own grounding electrode at the building, with grounds and neutrals kept separate in the subpanel and a four-wire feeder from the house. The feeder usually runs underground in conduit, and the trench is inspected before backfill. For larger outbuildings, see our outbuilding wiring page, which covers the lighting and circuits inside as well. We plan the trench route around utilities, drives and gardens, and restore the lawn afterwards as closely as the ground allows, so the only sign of the work is power in the building.
Local conditions
What we see around Grand Rapids
Subpanel work around Grand Rapids is scheduled from our service office on Richmond St NW on the west side of the city, and it is often paired with a garage, basement or charger project already on the calendar. Doing both in one visit means one permit, one inspection and one day with the main breaker off at the house, not two separate ones.
How the job runs
How a subpanel install runs
Load calculation
Can the main service share the load?
Plan the location
Near the loads, with working space.
Size the feeder
Breaker and conductors for load and distance.
Permit filed
Before work starts.
Install and connect
Feeder, subpanel, grounds and neutrals.
Label and inspect
Both directories updated, inspection passed.
Subpanels from Square D, Eaton and Siemens.
Straight answers
Questions about subpanel installation in Grand Rapids
Still unsure? Call (616) 699-4794 and ask a technician.
No. It adds breaker spaces; the main service still sets total capacity.
Yes, with clear working space in front and a feeder sized for the loads.
Yes. A detached building with a subpanel needs its own grounding electrode.
Typical regional installs run $500 to $1,500, depending on distance and size.
Yes. It is a new feeder and is inspected.
Same category
