Trusted Electrical Experts Serving
Fairfield County for Over 25 Years

Residential and commercial electrical solutions delivered with precision, safety, and lasting reliability.

OVER 25 YEARS OF QUALITY WORKMANSHIP

  • Founded in 1999, Kostantino Electric is a family-owned electrical contractor serving residential and commercial clients throughout Fairfield County. What began as a commitment to reliable, high-quality electrical service has grown into a trusted partner for homeowners and businesses alike. With decades of experience and a reputation built on precision and professionalism, the focus remains the same today: delivering electrical solutions that perform reliably and stand the test of time.

  • Integrity, accountability, and craftsmanship guide every aspect of the work. Clear communication, attention to detail, and respect for clients’ time and property are fundamental. By maintaining the highest professional standards and focusing on dependable results, lasting relationships are built through trust, consistency, and quality.

  • Every project begins with a clear understanding of the space, the requirements, and the expectations. Electrical work is planned carefully, executed precisely, and delivered with an emphasis on safety, efficiency, and long-term performance. From initial consultation through completion, each detail is considered to ensure solutions that function seamlessly and integrate naturally into the home or business they serve.

Our Services

From small service upgrades to full residential renovations and commercial installations, we provide comprehensive electrical solutions designed for safety, efficiency, and long-term performance.

  • A person wearing a gray glove with the brand 'TEN' is holding a black cable with three exposed colored wires (blue, yellow, brown). The person is wearing an orange work vest over a red and black plaid shirt.

    Electrical Service & Repair

    • Electrical troubleshooting and diagnostics
    • Emergency electrical repairs
    • Code compliance corrections
    • Outlet, switch, and wiring repairs

  • A close-up of a single electrical outlet mounted on a textured light teal wall.

    Installation & Replacement

    • New electrical installations
    • Fixture and device replacements
    • Appliance and equipment wiring
    • Remodel and renovation electrical work

  • Electrical control panel with circuit breakers, wiring, and labels.

    Panel Upgrades & Replacement

    • Electrical panel upgrades
    • Panel replacements and reconfigurations
    • Circuit additions and load balancing
    • Code-compliant safety upgrades

  • Multiple electric meters mounted on a gray panel, arranged in rows.

    Service Upgrades & Replacement

    • Service entrance upgrades
    • Meter and service equipment replacement
    • Capacity upgrades for modern electrical demand
    • Utility coordination and permitting

  • White electric car plugged into a charging station outside a modern building with large glass windows.

    EV Charger Installation

    • Residential EV charger installation
    • Commercial EV charging solutions
    • Load analysis and panel preparation
    • Code-compliant and future-ready installations

  • A Generac home backup generator installed on a landscaped yard in front of a house with a porch, lit exterior lights, and large windows.

    Generator Installation

    • Standby generator installation
    • Portable generator connections
    • Automatic transfer switches
    • Backup power solutions for homes and businesses

  • Nighttime scene of a lit swimming pool surrounded by lush plants and trees, with a modern building in the background.

    Exterior Landscape Lighting

    • Architectural and landscape lighting installation
    • Pathway, driveway, and garden lighting
    • Pool and outdoor living area lighting
    • Energy-efficient LED lighting solutions

  • A landscaped backyard patio at dusk with a lit fireplace, outdoor seating, pathway lights, and a two-story house with large windows and warm interior lighting.

    Custom Lighting Design & Build

    • Custom-built lighting design plans
    • Architectural lighting layouts
    • Fixture selection and placement
    • Integration with outdoor and interior spaces

  • A person wearing work clothes on a ladder with boxes and tools in a workshop or storage area, under hanging ceiling lights.

    Residential Electrical Services

    • Whole-home electrical solutions
    • New construction and renovations
    • Smart home and automation wiring
    • Safety inspections and upgrades

  • Interior of a modern restaurant or cafe with wooden tables and chairs, some illuminated pendant lights on the ceiling, a staircase on the right side, and a person sitting at a table using a laptop.

    Commercial Electrical Services

    • Office, retail, and mixed-use properties
    • Electrical maintenance and service contracts
    • Lighting retrofits and efficiency upgrades
    • Tenant fit-outs and build-outs

Book a Service
  • A person wearing a gray glove with the brand 'TEN' is holding a black cable with three exposed colored wires (blue, yellow, brown). The person is wearing an orange work vest over a red and black plaid shirt.

    Electrical Service & Repair

    • Electrical troubleshooting and diagnostics
    • Emergency electrical repairs
    • Code compliance corrections
    • Outlet, switch, and wiring repairs

  • A close-up of a single electrical outlet mounted on a textured light teal wall.

    Installation & Replacement

    • New electrical installations
    • Fixture and device replacements
    • Appliance and equipment wiring
    • Remodel and renovation electrical work

  • Electrical control panel with circuit breakers, wiring, and labels.

    Panel Upgrades & Replacement

    • Electrical panel upgrades
    • Panel replacements and reconfigurations
    • Circuit additions and load balancing
    • Code-compliant safety upgrades

  • Multiple electric meters mounted on a gray panel, arranged in rows.

    Service Upgrades & Replacement

    • Service entrance upgrades
    • Meter and service equipment replacement
    • Capacity upgrades for modern electrical demand
    • Utility coordination and permitting

  • White electric car plugged into a charging station outside a modern building with large glass windows.

    EV Charger Installation

    • Residential EV charger installation
    • Commercial EV charging solutions
    • Load analysis and panel preparation
    • Code-compliant and future-ready installations

  • A Generac home backup generator installed on a landscaped yard in front of a house with a porch, lit exterior lights, and large windows.

    Generator Installation

    • Standby generator installation
    • Portable generator connections
    • Automatic transfer switches
    • Backup power solutions for homes and businesses

  • Nighttime scene of a lit swimming pool surrounded by lush plants and trees, with a modern building in the background.

    Exterior Landscape Lighting

    • Architectural and landscape lighting installation
    • Pathway, driveway, and garden lighting
    • Pool and outdoor living area lighting
    • Energy-efficient LED lighting solutions

  • A landscaped backyard patio at dusk with a lit fireplace, outdoor seating, pathway lights, and a two-story house with large windows and warm interior lighting.

    Custom Lighting Design & Build

    • Custom-built lighting design plans
    • Architectural lighting layouts
    • Fixture selection and placement
    • Integration with outdoor and interior spaces

  • A person wearing work clothes on a ladder with boxes and tools in a workshop or storage area, under hanging ceiling lights.

    Residential Electrical Services

    • Whole-home electrical solutions
    • New construction and renovations
    • Smart home and automation wiring
    • Safety inspections and upgrades

  • Interior of a modern restaurant or cafe with wooden tables and chairs, some illuminated pendant lights on the ceiling, a staircase on the right side, and a person sitting at a table using a laptop.

    Commercial Electrical Services

    • Office, retail, and mixed-use properties
    • Electrical maintenance and service contracts
    • Lighting retrofits and efficiency upgrades
    • Tenant fit-outs and build-outs

Book a Service

What Sets Us Apart

Over

25

Years of Experience

Delivering reliable electrical solutions across residential and commercial projects

Trusted Electrical Experts Since 1999

Responsive Service You Can Depend On

Modern Solutions for Today’s Power Demands

A Reputation Built on Long-Term Client Relationships

Clean, Detail-Oriented Craftsmanship

Efficient Project Management & Timely Completion

Fully Licensed, Insured & Code-Compliant Work Done Right the First Time

What Our Customers are Saying

Testimonials

  • "We’ve trusted Kostantino Electric with all of our electrical needs—and they’ve earned that trust time and time again. What sets them apart is how responsive they are; they always communicate clearly about their arrival window, which gives such peace of mind. They treat your home with true respect, and more than once, they've stepped in to fix mistakes left behind by other electricians. One moment that really stood out: we had an emergency when our refrigerator stopped working. They came right away, quickly discovered it was just a simple switch, and didn’t even charge us for the visit. That kind of honesty is rare—and it’s exactly why we’re so grateful to have finally found an electrician we can count on. They’re the real deal—honest, skilled, and truly dependable."

    — Greenwich Homeowner

  • "Kostantino Electric provides the most professional, high quality electrical service in Fairfield County. The electricians are efficient and professional. Requests for service are always answered in a timely manner. Few companies meet Kostantino Electric’s level of service."

    — Westport Homeowner

  • “We were first introduced to Kostantino Electric 5 years ago when we purchased a home under construction. Their work, service and attitude of their electricians and tech staff made that experience wonderful. When we purchased a new residence that required a total renovation there was never a question of who we would bring on to do all our electrical work. Their approach to our demanding needs and our specific budget delivered an exceptional result. They work with quality products, are thoughtful in the approach to crafting solutions and are always accommodating. In this day and age to find a rescue who is dependable and delivers what they promise is rare! I highly recommend KE. Our electricians for life.”

    — Weston Homeowner

  • “The team at Kostantino Electric have always provided outstanding service for our company, they are very quick to respond and have often resolved small issues for us on the same day. They were able to help us with planning for a larger project and completed the work on time and to budget. I would highly recommend Kostantino Electric to anyone!”

    — Westport Commercial Client

  • “Konstantino Electric provides the quality, precision, and overall service every customer dreams of. They are efficient, supported by the latest technology, and pride themselves on being timely and error-free. I have recommended them to loads of folks who have in their turn heaped praise on Kostantino Electric’s performance. They are the best electrical service provider in Fairfield County.”

    — Westport Homeowner

  • “Kostantino Electric provided significant electrical services for the renovation of our house, including wiring for the installation of heat pumps and air handlers, an elevator, wireless access points, and electric hot water tanks, installing new light fixtures, including a heavy antique chandelier, hard wired access points for our internet, upgrading the lighting throughout the house, and providing new landscape lighting. They not only do professional high end work, but Kosta made valuable recommendations that improved the outcome of the project.”

    — Stamford Homeowner

  • "The team at Kostantino Electric is very knowledgeable, thorough and provide a top service even for difficult and technical jobs. They are also always available in case of emergency and act fast. Best in class and would highly recommend them!"

    — Greenwich Homeowner

  • "Kostantino Electric has been my "go to" for all my Electrical needs for over 20 years. The Team is professional, knowledgeable, punctual,and will "go the extra mile" for you. Their rates are competitive for the excellent service that they provide."

    — Westport Homeowner

  • "Kosta, Aristotle, and the team do incredible work. Our home, inside and out, is beautiful largely due to the lighting! From concept to execution, they were excellent partners in the process and brought great recommendations for both creative design and product selection. Professional and wonderfully qualified, I highly recommend them for any residential project."

    — Stamford Homeowner

  • "We highly recommend Kostantino Electric. Our experience with their team has been overwhelmingly positive. Whether it’s installing outdoor or indoor lights, upgrading or adding wiring they are thorough, meticulous and pristine in their work. They are also easy to communicate with and approach problems that arise with an open and creative attitude."

    — Rowayton Homeowner

Proudly Serving Leading Builders & Businesses in Fairfield County

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Let’s Power Your Next Project with Precision and Reliability

Our licensed and experienced electricians provide dependable, high-quality electrical services for homeowners and businesses throughout Fairfield County, Connecticut.

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