
Electrical Services in Fairfax VA: Complete Homeowner Guide
Your comprehensive guide to electrical services in Fairfax, Virginia. From panel upgrades to EV charger installation,...

Electrical service for Kensington's historic Antique Row, pre-war housing, and small-town Montgomery County charm. Request a free estimate for your installation, or describe the problem for a diagnostic and repair visit.
From routine repairs to major installations, our licensed electricians provide comprehensive electrical services to Kensington homes and businesses. Quoted electrical installations include a five-year workmanship warranty; manufacturer equipment warranties are separate.
Property-specific electrical panel replacement and service-capacity planning, with load calculations, utility coordination, labeling, and permit-path confirmation.
Electrical hookups for customer-owned or dealer-supplied portable generators and battery equipment, including compatible transfer equipment and inlet connections.
Replace faulty, tripping, or outdated circuit breakers for reliable power distribution.
Property-specific branch-circuit installation for appliances, workshops, offices, and specialty equipment, sized to the connected load and existing panel.
Upgrade your home's electrical service from the utility meter to the main panel.
Listed home battery and wall-pack installation with panel integration, transfer equipment, circuit selection, and permit-path confirmation.
Smart panel and smart-breaker installation for circuit-level monitoring, load management, and battery or EV coordination.
Recessed lighting planned around the room, ceiling access, fixture ratings and compatible dimming. Request a free estimate for a defined installation scope.
Property-specific outdoor and landscape lighting for paths, entries, architecture, patios, and gardens, with weather exposure and control needs evaluated on site.
Chandelier installation planned around fixture weight, mounting support, ceiling height and safe access. Send the model and room photos before arranging the work.
Dimmer and switch upgrades matched to your lights, wiring and control locations. We check compatibility before recommending a replacement.
Automated motion-activated lighting for security, convenience, and energy savings.
Panel-mounted surge protective device installation with equipment compatibility, conductor path, grounding, bonding, and status-indicator review.
Accessible residential electrical-system review with a written, photo-supported record of observed conditions and clearly stated inspection limits.
GFCI outlet installation and replacement with grounding, circuit and location checks. A planned replacement and an unexplained trip need different service requests.
Hardwired, interconnected smoke and CO detectors for maximum life safety.
Bring your home's electrical system up to current NEC code standards.
Home Level 2 EV charger installation with panel-capacity review, circuit planning, equipment connection, testing, and permit coordination for the defined scope.
Integration for smart switches, thermostats, and video doorbells.
Upgrade your outlets with built-in USB-A and USB-C charging ports.
Monitor electrical consumption and control selected loads with compatible lighting, timers, sensors, and smart electrical equipment.
Specialized wiring for kitchen remodels, appliances, and lighting.
Ceiling-fan installation and replacement with support, clearance, wiring and control checks. Tell us whether you are replacing a fan or adding one at a light location.
Bathroom exhaust-fan replacement starts with the existing opening, wiring and duct route. The estimate separates electrical work from ventilation and exterior repairs.
Safe, code-compliant electrical wiring for swimming pools, hot tubs, and spas.
Professional in-wall wiring for home theaters, media rooms, and entertainment systems.
Accessible aluminum branch-circuit evaluation and property-specific corrective work for documented connections or a defined copper-replacement scope.
Accessible knob-and-tube wiring evaluation and phased or defined replacement planning for older homes, with access and finish boundaries documented.
Diagnostic service for power loss, flickering, dead outlets, repeated tripping, heat, noise, and other residential electrical symptoms.
Need an emergency electrician now? Our 24/7 line is answered live at (571) 444-6886 for sparking panels, burning smells, and storm damage across Northern Virginia.
Honest light-commercial electrical for Northern Virginia businesses: offices, retail, restaurants, and tenant fit-outs. Request a commercial estimate.
Solar panels installed by the electricians who already do your panel, battery, and EV charger. From $2.40/W installed, with a master electrician on site.
Neighborhoods We Serve
Send your complete address, work description and any building-access requirements. Our team reviews the request and confirms availability before a visit is scheduled.


Staff confirm scope and availability
View detailed electrical service information for specific neighborhoods in Kensington.
AJ Long Electric proudly serves Kensington and surrounding areas.Call (571) 444-6886 for service in your area.
Local Service Area
Use your address and property details to plan the work. Nearby landmarks help describe the area, but do not establish electrical conditions, permit jurisdiction or installation requirements.
Area landmark
Howard Avenue Antique Row
Area landmark
Washington DC Temple
Area landmark
Kensington MARC Station
Area landmark
Rock Creek Regional Park (adjacent)
Area landmark
Kensington Library
Area landmark
Kensington Park
Full and partial rewires in 1880s-1930s historic homes
Knob-and-tube wiring replacement and abandonment in attics/basements
60-amp fuse panel upgrades to modern 200-amp service
Ungrounded two-wire circuit modernization
Historic-district preservation review coordination
Antique-shop tenant electrical along Howard Avenue
100-amp to 200-amp upgrades in mid-century homes around the core
EV charger installations on smaller-lot driveways
Confirm the actual property jurisdiction and scope before deciding which permits or inspections apply. New circuits and service changes differ from like-for-like replacements. The authority determines the requirements for your project.
| Project | Planning Step | What It Means |
|---|---|---|
| Panel upgrade (e.g. 100A to 200A) | Confirm permit path | Replacing or upsizing the main electrical panel that distributes power throughout your home. |
| EV charger installation | Confirm permit path | Adding a dedicated 240V circuit for a Level 2 home electric-vehicle charger. |
| New circuits & rewiring | Confirm permit path | Identify the proposed circuit work and any changes to walls or protected assemblies. |
| Like-for-like fixture or device swap | Check exemptions | Confirm whether the exact replacement qualifies for an exemption; protected assemblies or other scope can change the requirement. |
Your written scope should identify permit and inspection coordination. For state trade licensing, see the Maryland Board of Master Electricians. Check master electrician licensing and Maryland electrical code requirements through the Department of Labor.
About Our Kensington Services
Kensington is a small incorporated town in Montgomery County, with about 2,200 residents in roughly half a square mile. Though tiny by area, Kensington is a distinctive community: home to the Howard Avenue Antique Row (one of the largest concentrations of antique dealers on the East Coast), the original 1880s railroad-suburb housing along Knowles and Connecticut Avenues, and the Washington DC Temple of the Church of Jesus Christ of Latter-day Saints just outside the town limits.
Kensington's housing stock is exceptionally old by DMV standards. The original B&O Railroad commuter-suburb housing dates to the 1880s-1900s and includes Queen Anne Victorians, Folk Victorians, Princess Anne cottages, and original frame farmhouses. Slightly newer Craftsman bungalows from the 1910s-20s and Tudor and Colonial Revival homes from the 1920s-30s fill out the historic core. Mid-century brick capes and ranchers extend into the 1950s-60s additions to the town.
Electrical work in Kensington is heavy on historic-home rewiring. Most pre-1940 homes still have remnants of original knob-and-tube wiring (often partially abandoned but sometimes still energized in attic and basement sections), original 60-amp fuse panels, ungrounded two-wire circuits, and a long history of incremental updates that left layered wiring runs hard to trace. Full or partial rewires are common, and we work carefully through the Town of Kensington's historic district review process when exterior work or visible interior alterations affect period appearance.
Newer mid-century homes around the historic core present standard panel-upgrade work — 100-amp service to 200-amp, kitchen rewire work for renovation projects, dedicated circuits for additions, and EV chargers. The Howard Avenue Antique Row commercial properties — most converted from original residential or early-20th-century storefronts — require their own careful electrical work: code-compliant lighting upgrades, dedicated circuits for restoration equipment in antique-repair shops, and rooftop HVAC service for the small commercial buildings.
Kensington residents and business owners choose AJ Long Electric because we treat historic-property electrical work as a craft, we pull all required permits with Town of Kensington and Montgomery County, and we back quoted electrical installations with a five-year workmanship warranty.
Fully licensed in Maryland with comprehensive liability insurance for your protection.
1,463 Google reviews across our four business profiles.
Call to confirm the current response window for Kensington; urgent safety concerns are prioritized during business hours.
Frequently Asked Questions
Get answers to the most frequently asked questions from Kensington homeowners about our electrical services.
AJ Long Electric serves Kensington. Our family-owned company has been in business since 1996. Send the property address and work description so our team can review scope, access and availability.
Permit requirements depend on the property jurisdiction, building and electrical scope. The written proposal should identify required permit and inspection coordination. The local authority controls review, corrections and final approval; a mailing city alone may not identify the correct office.
We accept requests for Kensington and nearby areas, including Kensington Heights, Kensington View, Old Town Kensington. Provide your complete address and access details; staff confirm the next step and available visit window after reviewing the request.
For urgent electrical hazards in Kensington, call (571) 444-6886. During business hours, we prioritize safety-related calls and confirm the available response window with you. If you see fire or an immediate threat to life, call 911 first.
Describe the desired change or symptom, provide the equipment model if known, and include photos taken safely with covers closed. Note access restrictions, prior renovations and other loads you plan to add. A home’s age or neighborhood alone does not establish its wiring condition or need for an upgrade.
Estimates are free, with no fee for the visit or the written price. For a panel upgrade, EV charger installation, whole-house rewiring, or another project, request an appointment so we can document the property-specific scope.
AJ Long Electric is a licensed and insured electrical contractor for work in Maryland. John Long is the company founder and Master Electrician, and the company maintains the licenses required for its work. You can verify our credentials before authorizing your Kensington project.
In addition to Kensington, AJ Long Electric provides professional electrical services to these nearby communities in Maryland and the greater DMV region.
Proudly serving Kensington and surrounding areas including Bethesda, Rockville, Silver Spring, Wheaton. Our electricians are licensed to work throughout Northern Virginia, Maryland, and Washington DC.
For fire or an immediate threat to life, call 911 first. Keep clear of damaged equipment and downed wires. For an urgent electrical concern, call us so staff can review the issue and confirm the available response window.
● Average response time: < 2 hours for emergencies
Expert Tips
Helpful guides and advice from our licensed electricians who serve the Kensington area.

Your comprehensive guide to electrical services in Fairfax, Virginia. From panel upgrades to EV charger installation,...

Arlington homeowners face unique electrical challenges in older rowhouses and condos. Learn what to look for in an...

Alexandria has specific electrical codes, especially in historic Old Town. Learn about permit requirements, historic...
AJ Long Electric is your trusted licensed electrician in Kensington, Maryland. We proudly serve neighborhoods including Kensington Heights, Kensington View, Old Town Kensington, Rock Creek Hills, Parkwood, and areas near Howard Avenue Antique Row, Washington DC Temple, Kensington MARC Station. Serving ZIP codes: 20891, 20895. Call (571) 444-6886 to request an estimate for electrical services in Montgomery County.