A lot of Castle Rock’s master-planned community homes came with 100-amp service panels as standard, which made sense for the electrical loads of that era. Today, those same homes are running EV chargers in the garage, home offices, upgraded kitchen appliances, and high-efficiency HVAC systems that collectively push panels to their limits. The symptoms are familiar: breakers that trip regularly, lights that dim when the AC kicks on, and the inability to add new circuits without first removing others. A panel upgrade to 200-amp service resolves all of these by giving the home the electrical capacity it actually needs.

For targeted breaker repairs that do not require a full panel replacement, our circuit breaker repair service covers those. For new circuits being added to a properly sized existing panel, our electrical installation service handles that scope. See the full Castle Rock electrical services page for everything we offer.

• 100-amp to 200-amp service upgrades for Castle Rock homes that have outgrown their original panel capacity.
• Panel replacement for panels that are at end of life, have known reliability issues, or have failed.
• Federal Pacific and Zinsco panel replacement for Castle Rock homes with panel brands that have documented safety concerns.
• Sub-panel installation for detached garages, workshops, and additions that need their own circuit distribution point.
• Panel repair for specific component failures within the panel that do not require full replacement.

Here are the electrical panel situations our Castle Rock electricians handle most often.

How Do I Know If My Castle Rock Home’s Panel Needs to Be Upgraded?

The clearest signs are breakers that trip regularly under normal household load, a panel that feels warm to the touch, lights that dim or flicker when high-draw appliances cycle on, a panel with fewer than 20 circuits that is already full, or a 100-amp service in a home that has added significant electrical load since it was built. WireNut assesses the panel’s actual condition and capacity before recommending an upgrade, so you are not spending money on a new panel unless it is genuinely the right solution for your Castle Rock home.

Does a Panel Upgrade in Castle Rock Require a Permit?

Yes. Panel upgrades and replacements require a permit and inspection from Douglas County or the Town of Castle Rock depending on your address. They also require coordination with the utility provider for the service disconnect during installation. WireNut handles all of it, including the permit application, utility coordination, installation, and inspection scheduling. You do not have to manage any of that paperwork yourself.