Planning a Main Service Panel Upgrade During a Home Remodel

If you're tearing into walls for a remodel, that's the right time to deal with an undersized or outdated main service panel. Doing the panel while the house is already open saves you from opening it twice. Here's how I think through it before any wire gets pulled.

Why do a panel upgrade during the remodel instead of later?

A remodel opens up walls, ceilings, and sometimes the path from the meter to the panel. Once drywall goes back up, every one of those runs gets harder and more expensive to touch. So the smart move is to handle the panel while the access is already there.

A remodel also usually adds load. New kitchens, bathrooms, a hot tub, mini-splits, or an EV charger down the road all pull from the same panel. If the existing one is already full or marginal, adding to it just kicks the problem down the road.

I'd rather look at the whole picture up front. When I walk a Hamilton home for a remodel, I'm counting circuits, checking what's feeding the panel, and thinking about what you're planning to add, not just what you have today.

What do I look at on site before I quote a panel?

The first thing is the existing service. I want to see the panel, the meter, the main feeder, and how the grounding and bonding are done. Older homes around the Bitterroot Valley sometimes have setups that were fine decades ago but aren't where I'd leave them today.

Then I look at the panel itself. Is it full? Are there double-tapped breakers, corrosion, scorching, or a brand that's known to be troublesome? Those tell me whether you're really upgrading capacity or just swapping an old box for a safe one.

I also look at the physical path. Where does the meter sit, how far is it from the panel, and what's the wall and framing situation between them. On a remodel, I can often route things cleaner because the walls are open, and I want to plan that before anyone closes them.

Last, I ask what you're building toward. A Hamilton residential remodel electrical panel decision changes a lot depending on whether you're adding a big kitchen, an addition, or planning for an EV charger and shop loads later.

What drives the cost of a panel upgrade?

The honest answer is that it depends on what I find. A clean swap where the service is already sized right is a very different job than one where the feeder, meter base, and grounding all need attention.

Here's what moves the number:

• The size of service you actually need based on your loads
• Condition of the existing feeder and whether it gets reused or replaced
• How far the panel sits from the meter and what the run looks like
• Grounding and bonding that need to be brought current
• Whether the utility has to be involved to disconnect and reconnect
• How many existing circuits have to be reworked into the new panel

Any one of those can change the scope. That's why I don't throw out a number before I've seen it. Quoting a panel sight unseen is just a guess, and I'd rather give you a real figure after I've looked.

How does the work actually go?

Once we've agreed on scope, I coordinate the sequence with the rest of your remodel so I'm not fighting your other trades. On a panel upgrade, there's usually a point where the power has to come down, so I plan that for a window that works for you.

If the utility needs to disconnect and reconnect the service, that gets scheduled with them. How that lands on the calendar depends on their availability, and they can tell you where that stands when we get to that stage.

Then it's the physical work: setting the new panel, landing the feeder, handling grounding and bonding, and moving your existing circuits over cleanly and labeled. On a remodel I try to leave you room in the panel for what you're planning next, so you're not calling me back to start over in two years.

When everything's terminated and inspected, power comes back and I walk it with you so you know what's what.

Should the panel come before or after new circuits?

If your remodel is also adding circuits, and most are, the panel is the foundation everything else lands on. I'd rather set or upgrade the panel first, or at least plan it first, so the new circuits have a proper home.

That's where it helps to have the electrical scoped as part of the whole residential remodel instead of bolted on at the end. New kitchen and bath circuits, lighting, and any future loads all tie back to that panel. Planning them together keeps the wiring clean and your panel organized.

In Hamilton homes especially, where I see a mix of older builds and newer additions stitched together, taking a few minutes to plan the panel before the walls close pays off. It's a lot easier to do it right the first time than to open finished drywall to fix it.

When to Give Me a Call

If you're remodeling anywhere in Hamilton or the rest of the Bitterroot Valley and you're not sure whether your panel can carry what you're planning, let's take a look before the walls go back up. I'll walk the service with you, talk through your loads, and give you a straight answer on what the job really needs.

Call or text (406) 519-9513 and we'll get your remodel wired right.