For Homeowners Managing Their Own Build or Remodel
Your Electrical Partner for Owner-Managed Builds & Remodels
Acting as your own GC takes confidence and coordination. CMB Electric works directly with owner-builders — on your schedule, with straight answers, and without the runaround you get from contractors who'd rather deal with another contractor.
Owner-GCs Deserve a Different Kind of Electrician
When you're managing your own remodel or new build, you're already doing the work of a general contractor — coordinating trades, tracking the schedule, making decisions on the fly. The last thing you need is an electrician who won't give you a straight answer about what needs a permit, what the rough-in sequence looks like, or why a particular approach costs more than you expected.
CMB Electric's General Manager and primary electrician, Robert Ray, also teaches electrical code at the college level. That means he's used to explaining the "why" behind electrical work — not just showing up and doing it. If you want to understand what's happening in your walls, we'll tell you. If you want us to just handle it, we'll do that too.
Why owner-GCs work with Robert:
— 25 years in residential, commercial, and industrial electrical
— Teaches NEC code at Flathead Valley Community College
— Explains the work in plain language, not contractor jargon
— Familiar with the MT permit process and local inspectors
— Responsive to your schedule, not the other way around
What Needs an Electrical Permit in Montana
In Montana, electrical permits are required for most new electrical work — and for good reason. A permit creates an inspection record, protects your homeowner's insurance, and ensures the work is done to a standard that keeps the next owner (and your lender) confident in the property. Here's a practical breakdown of what requires a permit in a typical residential project.
Generally requires a permit:
- New electrical service installation or upgrade
- New circuits added to an existing panel
- Wiring for new construction or additions
- Remodel wiring that involves new circuits or relocated panels
- EV charger installation (dedicated circuit)
- Hot tub, spa, or pool electrical
- Generator hookup or transfer switch installation
- Subpanel installation
Generally does not require a permit:
- Like-for-like device replacement (outlets, switches, fixtures)
- Ceiling fan replacement on an existing circuit
- Repair of existing wiring
- GFCI device replacement
- Smoke and CO detector replacement
Note: Permit requirements can vary by jurisdiction. CMB Electric will always confirm permit requirements for your specific project before work begins. When in doubt, we pull the permit — it protects you.
Rough-In and Trim-Out: What They Are and What to Expect
Electrical work on a remodel or new build happens in two distinct phases. Understanding both helps you coordinate your other trades and avoid expensive schedule conflicts.
Phase 1: Rough-In
Rough-in is the electrical work done before the walls are closed. This is when we run wire through the framing, install electrical boxes, and establish the locations of every outlet, switch, fixture, and circuit in the project.Rough-in happens after framing is complete and before insulation or drywall goes in. It must be inspected and approved before the walls close — this is a firm sequence that you need to build into your project timeline.
What CMB Electric does in rough-in:
- Wire runs through framing to all device locations
- Electrical box placement (outlets, switches, fixtures)
- Panel rough-in (breaker locations roughed in)
- Coordinate with inspector for rough-in inspection
Timeline tip: Schedule rough-in immediately after framing is complete. Waiting costs you time on every subsequent trade.
Phase 2: Trim-Out (Finish)
Trim-out is the finish electrical work — everything that happens after drywall is installed, mudded, and painted. This is when devices, fixtures, covers, and the panel itself are completed and connected.Trim-out cannot start until surfaces are finished and ready. Starting too early creates rework. The final electrical inspection happens at or after trim-out and is required before occupancy.
What CMB Electric does in trim-out:
- Install outlets, switches, and cover plates
- Hang and connect light fixtures
- Complete panel — breakers landed, labeled, and verified
- Connect appliances and HVAC electrical
- Final inspection coordination
Timeline tip: Trim-out is typically faster than rough-in. Schedule it immediately after paint is complete and appliances are on site.
How to Prepare for Your Electrical Work
The more we know before we arrive, the more efficiently the job goes. Here's what helps us help you.
Have Your Plans or Layout Ready
A floor plan — even a rough hand sketch — showing outlet locations, fixture positions, and appliance locations helps us provide an accurate estimate and shows up prepared on day one. CAD drawings are great, but not required.
Know Your Major Appliances
We need to know about electric range, dryer, HVAC equipment, EV charger, hot tub, or any other large load. These affect panel sizing, service capacity, and circuit layout — and they're easier to plan for upfront than to add later.
Share Your Project Timeline
Tell us when framing is expected to be complete (for rough-in scheduling) and when you expect drywall to be finished (for trim-out). We'll fit into your sequence and flag any scheduling conflicts before they become problems.
Ready to Talk Through Your Project?
Start with a Remodel / Addition Evaluation ($175 — credited toward the project). We'll review your plans, confirm permit requirements, and give you an accurate electrical estimate before any work begins.