Sampaio Electric LLC

A meticulously organized electrical service panel mounted on a clean, light gray utility room wall, filled with neatly labeled breakers, precisely routed colored wiring, and a prominent main disconnect switch. The metal panel door, painted a crisp white, is open to showcase the professional installation. Cool, even overhead LED lighting casts soft, shadow-free illumination, highlighting the clarity and order of the components. The polished concrete floor and minimal surrounding tools create a tidy, professional environment. Captured at eye level with sharp focus throughout, the composition emphasizes reliability, safety, and expert workmanship. The photographic realism and clean, modern aesthetic reflect a trusted, fully licensed electrical contractor.

Powering Massachusetts homes and businesses safely

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About

Experienced Massachusetts Electrical Contractors

Sampaio Electric LLC has delivered reliable electrical solutions since the 1990s, serving homes, businesses, and industrial facilities across Massachusetts. As fully licensed and insured contractors, we combine international experience with local knowledge to complete every project up to code.

Our story
A modern commercial building electrical room featuring rows of steel electrical cabinets, neatly arranged conduit runs, and labeled junction boxes along a smooth, light-colored wall. Heavy-duty industrial-grade panels with clear engraved labels stand on a spotless epoxy floor, with cable trays running overhead in perfectly parallel lines. Bright, neutral LED strip lighting floods the space, eliminating harsh shadows and giving everything a crisp, professional look. Captured from a slightly wide-angle perspective, the composition leads the eye down the aisle of equipment, conveying scale, organization, and technical expertise. The mood is precise, dependable, and highly professional, rendered in photographic realism with a clean, contemporary industrial aesthetic.
A cozy residential living room corner with a newly installed, elegant white duplex outlet and matching dimmer switch plate on a freshly painted light beige wall, perfectly aligned and flush. Nearby, a baseboard and hardwood floor meet seamlessly, emphasizing attention to detail. Warm late-afternoon natural light filters in from an unseen window, creating gentle gradients across the wall and soft shadows along the outlet edges. The background is softly blurred, hinting at tasteful home decor without distraction. Shot close-up with shallow depth of field, the composition highlights the quality of the finish work. The photographic style is clean and modern, evoking safety, comfort, and professional residential electrical service.

Services

From panel upgrades and EV charger installations to lighting design, code corrections, and emergency troubleshooting, Sampaio Electric LLC provides comprehensive residential, commercial, and industrial electrical services across Massachusetts, tailored to your building’s needs and budget. New construction wiring, Design-build projects, Panelboards & switchboards, LED retrofits, Motor Controls, PLC wiring, High-voltage systems, Equipment Installations, Preventive maintenance, Fire Alarm, Data, Security cameras, Access Control, Intercom Systems, Network racks, Wi-Fi infrastructure, and beyond.

View services

Reviews

Aya Nakamura

“Sampaio Electric handled our office upgrade quickly and professionally.”

Mateo García

“They rewired our older home, explained every step clearly, and left everything spotless. We trust Sampaio Electric for any future work.”

A high-tech industrial control panel with a brushed stainless steel faceplate, illuminated indicator lights in red, green, and amber, and clearly printed labels beneath each switch and button. Heavy-duty conduit and cable entries are secured with precision at the bottom and sides, all anchored to a smooth, painted concrete wall in a manufacturing environment. Neutral overhead lighting provides even illumination, subtly reflecting off the metallic surfaces and casting crisp, controlled shadows. Captured from a three-quarter angle at mid-height, the image shows depth and complexity without clutter. The atmosphere is robust, efficient, and technically advanced, with photographic realism and a clean, professional industrial aesthetic suitable for showcasing sophisticated electrical capabilities.
An evening exterior scene of a Massachusetts-style two-story home with perfectly wired, energy-efficient LED architectural lighting highlighting the roofline, entryway, and landscaped path. The siding has a subtle texture, and the warm white fixtures are symmetrically placed, casting soft pools of light on the walkway and gentle glows on the facade. The driveway and front steps are clearly illuminated, emphasizing safety and curb appeal. The sky holds a deep blue twilight gradient, providing contrast to the warm tones of the lighting. Shot from a slightly low, wide-angle perspective, the composition captures the entire front of the home and yard. The photographic realism and professional, inviting mood communicate expert residential outdoor electrical work.
A clean, modern office interior featuring a precisely aligned grid of recessed LED ceiling lights casting bright, uniform illumination over sleek work surfaces and a polished floor. On one wall, an accessible electrical panel with a closed, neatly labeled gray metal door subtly indicates professional infrastructure behind the scenes. The walls are painted a cool white with subtle texture, and cable management channels run discretely along the baseboards. Captured from an elevated corner perspective, the composition showcases the overall lighting quality and orderliness of the electrical installation. The photographic style is crisp and contemporary, with a calm, efficient atmosphere that underscores reliable commercial electrical services.
Spacious modern living room and kitchen with large windows and contemporary lighting
A stylish open-concept living and dining area illuminated by warm lighting
Modern two-story house with large windows and a Tesla electric car charging in the driveway at dusk
Car charger installation
Technician kneeling and connecting wires to a Kidde fire alarm control panel
Fire alarm system installation
Video intercom system mounted on wall beside apartment door number 402
Modern video intercom system is installed.
Remove the man from panel area

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Visit us

Based in Marlborough, MA

Hours

Mon–Fri 7am–5pm

Phone

(617) 201-0957