Finest Electric Inc

Finest Electric Inc runs electrical work out of Long Beach with Mario Castillo in charge of the crew. They handle panel upgrades, outlet additions, bathroom fan installs, dedicated breaker lines, ceiling fixture swaps, and EV charger circuits. The team takes on older homes in the area, including those built around 1920 or even earlier, and focuses on getting power restored or updated without unnecessary disruption. Services center on straightforward fixes and full upgrades that keep the systems safe and organized.

Homeowners describe jobs like full panel replacements paired with smaller tasks such as adding outlets or fans where Salvador, Kevin, and the rest of the crew stayed on schedule and left the workspace clean. In one case Salvador and Kevin updated wiring in a 100-year-old house while protecting its original details. Another job involved Dave handling the initial call for a light fixture swap and Salvador finishing the install the same day. Victor gave a clear quote upfront, Gabriel and Salvador completed the main work, and Luis ran an EV circuit the next business day after the request came in. Reviews note the crew solved power loss in a 1922 house in under an hour and kept everything neat throughout.

The crew shows up on time, answers questions during the job, and charges a price that customers call reasonable. Communication stays steady from the first contact through completion, and the team works efficiently even on complex older wiring. They cover the Long Beach area and respond the next business day when needed. Reviewers mention that the finished panels look organized and the new lines run without extra mess or damage to the home.

The company earns consistent praise for reliability on both big upgrades and quick repairs. DIRT Score 4.8 from 542 reviews on Finds.

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“Mario Castillo and his team did an excellent job on our electrical panel upgrade along with several smaller projects, including installing miscellaneous outlets and a bathroom fan. From start to finish, the work was professional, efficient, and clearly done with care. Salvador and Kevin were especially great to work with. They were thoughtful and respectful of the historic nature of my 100-year-old home, taking extra care to preserve its character while updating the electrical systems. They communicated clearly, kept the work area tidy, and approached every detail with professionalism. It’s not always easy finding electricians who understand older homes, but this team really does. I highly recommend Mario Castillo and his crew for anyone needing electrical work, especially in historic properties.”

“I wanted to give a huge shout-out to Salvador and Kevin from Mario Castillo Electric for the incredible job they did on my home. They recently installed a new electrical panel and three dedicated breakers, and the entire experience was top-notch. Dealing with electrical upgrades—especially on an older, historic home—can be stressful, but these guys made it look easy. They were professional, punctual, and took the time to explain exactly what they were doing throughout the process. The new panel is neatly organized, and the dedicated lines were run perfectly. It’s rare to find technicians who are as respectful of your space as they are skilled at their trade. If you need any electrical work done, I highly recommend asking for Salvador and Kevin.”

“Highly Recommend Mario Castillo Electric! Professional, Reliable, and Top-Notch Work I recently hired Mario Castillo Electric out of Long Beach to replace an old, outdated ceiling light fixture, and they absolutely knocked it out of the park. From start to finish, the entire experience was excellent.Dave was my first point of contact and was fantastic—super responsive, friendly, and helpful with scheduling and answering all my questions. He made the whole process smooth and stress-free.When Salvador arrived to do the job, he was right on time and worked efficiently. He completed the installation quickly but carefully, making sure everything was done perfectly and safely. The new fixture looks amazing, and the quality of his work is clearly superior. You can tell he’s a true professional who takes pride in what he does.If you need an electrician in the South Bay & Long Beach area, do yourself a favor and call Mario Castillo Electric. Salvador and Dave are both outstanding, and I couldn’t be happier with the service and results. Five stars all the way—I’ll definitely be using them again for any future electrical needs!”

“Every part of the experience working with Mario Castillo Electric impressed me. Victor came out and gave us a detailed quote. Gabriel and Salvador performed the work and did a great job. The price was very reasonable, communication was good throughout the process, and they did excellent work. They’ve been way more on top of things than other companies I’ve worked with and they will be the first people I call from now on. I had some more work done to install an EV charger circuit. Luis came out the next business day after I called and did a great job, got the circuit installed quickly and professionally. Highly recommended.”

“Today Mario Castillo sent a tech, Salvador Sanchez, out to restore power to the front rooms of my 1922 house, not an easy thing to do with a 104-year-old structure. He arrived exactly on time and then spent the next hour not only solving the problem but also helping me restore the home's insane network. Excellent service--Salvador really knows how to go straight to the problem and calmly deal with it, all in less than an hour. The price was terrific, too. I'm so impressed that you could say I'm now a lifetime customer. Mario Castillo really is the best: Highly recommended.”