Licensed Electrician in Catonsville, MD
JJ Palmer Electrical Service is here to help with your electrical needs. Get in touch to discuss your project.
Electrical Repairs
Wiring & Installation
Lighting Installation
Careful wiring and fixture installation for upgrades, renovations, and new spaces.
Panel & Circuit Work
A Local Master Electrician for Homes and Businesses
JJ Palmer Electrical Service is owned and run by John Palmer, a Maryland Statewide Master Electrician (License #12441) who has been working in the trade since 1978. When you call, you talk with the electrician who will plan and do the work. We handle residential and commercial electrical work across Catonsville, Ellicott City, Columbia, and the rest of Baltimore and Howard Counties.
Whether it’s a dead outlet in the kitchen, new lighting for an office, or a bigger project like a panel upgrade, we take the time to find the cause, explain your options in plain language, and do the job neatly and to code.
Electrical Services We Offer
- Repairs and troubleshooting: flickering lights, tripping breakers, outlets or switches that stopped working
- Panel and service upgrades: replacing old or overloaded panels and adding capacity for new equipment. Learn about panel upgrades
- EV charger installation: Level 2 chargers for your garage, driveway, or workplace. Learn about EV chargers
- Generator installation: standby generators, transfer switches, and portable generator inlets. Learn about generators
- Lighting and ceiling fans: indoor, outdoor, and landscape lighting
- Commercial electrical work: tenant fit-outs, lighting upgrades, and circuits for new equipment
See the full list on our Services page.
Why Customers Call JJ Palmer
- Licensed Master Electrician. Maryland Statewide Master Electrician #12441 and a Certified Universal HVAC Technician.
- Decades of experience. In the trade since 1978, with training from Lincoln Tech, CCBC, and the Air Force Technical School, plus six years as an Avionics Guidance and Control Systems Specialist in the Air National Guard.
- BBB A+ accredited. Part of Maryland Home Improvement Company (MHIC #77900), in business since 2000.
- Permits handled. When a job needs a permit and inspection, we take care of it.
- Straight answers. You’ll know what we recommend and why before any work starts.
How It Works
- Call or send a request. Reach us at (443) 986-1000, email info@jjpalmerelectric.com, or use the form below. We’re available Monday to Friday, 9 to 5.
- We look at the job. We talk through what’s going on and, when needed, visit to see the work in person.
- You get a clear estimate. Estimates are free, and we explain what’s included.
- We do the work and test it. We finish the job, test everything, and clean up before we leave.
Ready to get started? Contact us for a free estimate.
Request a Free Estimate
Frequently Asked Questions
Do you offer free estimates?
What areas do you serve?
Do you install EV chargers?
Do you install generators?
Do you do commercial electrical work?
Yes. Along with homes, we work on offices, shops, and other commercial spaces, including lighting upgrades, new circuits, and tenant fit-outs.
Do you pull permits?
Yes. When a job needs a permit and inspection, we handle the paperwork and schedule the inspection.
Do you serve Ellicott City and Columbia?
Yes. We work throughout Howard County, including Ellicott City and Columbia, as well as Baltimore County and Baltimore City.