Sub Panel Installation
Quick answer
Sub-panel installation costs $1,000–$2,500 and adds breaker space where you need it, garages, workshops, ADUs, additions, without upgrading your main service.Typical installed cost: $1,000–$2,500
A sub-panel is the right tool when you're out of breaker slots but not out of capacity: a satellite panel fed from your main, placed where the circuits are needed. It's the standard solution for detached garages, workshops, basements, and ADUs.
About Sub Panel Installation
A sub-panel solves the 'no more room' problem without touching your service: a satellite load center fed by one feeder from the main panel, placed where the demand actually is, the garage, the workshop, the basement, the ADU.
Besides space, sub-panels buy convenience and cleaner wiring: local disconnects where you work, shorter branch circuits, and an organized system instead of a rat's nest of long home runs.
Where sub-panels shine
- Detached garage, EV charger, opener, lights, tools on local breakers
- Workshop, 240V machine circuits with a local disconnect
- ADU or in-law suite, separated loads, simpler metering
- Additions and finished basements, capacity where it's consumed
Sizing a sub-panel: buy slots, not just amps
The classic sub-panel regret isn't amperage, it's running out of breaker spaces three years later. Physical slots cost almost nothing at purchase: the price difference between a 12-space and a 24-space panel is small, but the difference when you want one more circuit is an entire project.
Our rule of thumb for garages and shops: count the circuits you can name today, then double it, the EV charger, the mini-split, and the compressor you'll eventually want are cheaper to plan for than to retrofit. Feeder sizing follows the same logic: conduit sized generously once means a future feeder upgrade is a wire pull, not a re-trench.
How it works
Free assessment
A licensed electrician evaluates your panel, capacity, and site at no cost.
Transparent quote
You get a clear, written, fixed price, no surprises, no pressure.
Professional install
Tesla-certified electricians complete the work to code, permit pulled.
Inspection & warranty
We schedule inspection and back the work with our workmanship guarantee.
What's included
- Licensed, insured & Tesla-certified electrician
- Free in-home assessment and load calculation
- Permit pulled and inspection scheduled
- All materials and code-compliant wiring
- Clean, professional install with cleanup
- Workmanship guarantee of up to 10 years
Get a free sub panel installation estimate
Book your free in-home estimate
Pick a time that works for you and we will match you with a licensed, Tesla-certified electrician in your area. No obligation, transparent fixed pricing.
Book Your Free In-Home Consultation →Frequently asked questions
If your main service has spare amperage but no breaker space, a sub-panel is cheaper. If the service itself is maxed, only a service upgrade fixes it, the load calculation tells us which.
Yes, that's the classic use: one feeder run to the garage, then a local panel for the door opener, EV charger, lights, and outlets.
Typical residential sub-panels run 12–30 spaces, sized to the feeder and your plans. We spec headroom so the next project doesn't need another panel.
No, it redistributes existing capacity. If the main service itself is maxed, you need a service upgrade instead; the load calc tells us which.
More electrical services
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An electrical panel upgrade to 200 amps typically costs $1,500–$4,000. It's often required before adding an EV charger, Powerwall, or major appliances. Charge Home Solutions uses licensed electricians and handles permits and inspection.
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