By LE Construction · Published October 6, 2026
Many Ventura County homes built from the 1950s through the 1970s were wired for a different era: fewer appliances, no air conditioning, no induction cooking. A remodel that adds a modern kitchen, a heat pump, more bathrooms or an addition can push an older panel past its limit. Here is how to tell, and how to plan an upgrade so it does not hold up your project.
Signs your panel may not keep up
- A 60 or 100 amp main breaker.
- No open spaces for new breakers.
- Breakers that trip when several appliances run.
- Older panel types with known reliability concerns, which an electrician can identify.
- Plans for induction cooking, a heat pump, more bathrooms or an addition.
Load calculations
Whether you need an upgrade is a calculation, not a guess. An electrician or designer adds up existing and new loads according to the electrical code. A remodel that replaces a gas range with induction, adds a dishwasher and microwave circuit, and converts to a heat pump can add significant load.
Panel replacement versus service upgrade
- Panel replacement: a new breaker box with more spaces, at the same service size.
- Service upgrade: more capacity from the utility, often from 100 to 200 amps, which can involve a new meter, larger service wires and utility work.
In most of Ventura County, Southern California Edison is the utility, and service upgrades require scheduling a disconnection and reconnection with them.
Cost factors
- Panel size and type.
- Whether the service from the utility needs upgrading.
- Distance and routing from the meter.
- Grounding and bonding updates required by code.
- Wall repair and finish work.
Planning it into a remodel
- Check the panel at the first visit. We do this on every estimate.
- Run the load calculation with the planned kitchen, bath or addition.
- Schedule the upgrade early, before demolition, if utility work is needed.
- Permit and inspect the electrical work with the rest of the project.
A panel upgrade can also make room for future needs like electric vehicle charging, so it is worth sizing with the next ten years in mind.
See our whole-home remodeling and older home renovation pages.
Frequently asked questions
How do I know my panel size?
The main breaker at the top of the panel is usually labeled with the amperage, such as 100 or 200. The panel label inside the door also lists the rating. An electrician can confirm and calculate whether it can handle your planned loads.
What is the difference between replacing a panel and upgrading the service?
Replacing a panel swaps the breaker box. Upgrading the service increases the capacity coming from the utility, which may involve a new meter, larger wires and work by the utility company. Service upgrades take longer to schedule.
Do I need a permit for a panel upgrade?
Yes. Panel replacements and service upgrades require an electrical permit and inspection, and service upgrades involve coordination with the utility for disconnection and reconnection.
Should I upgrade the panel before or during a remodel?
Plan it before demolition starts. Utility scheduling can take time, and the new panel needs to be ready when new circuits are installed. We check the panel at the first visit so it is in the plan from the start.