J.M. Mullen has performed numerous commercial electrical installations projects including indoor soccer fields, restaurants, and churches. Whether you want to renovate an individual office, or upgrade an entire commercial space, J.M. Mullen Electric can provide a complete “turn-key” installation.


Our vast supply chain and in stock products allow us to react quickly to residential service calls. Whether you need repairs, maintenance or new construction work completed, J.M. Mullen Electrical Services can provide cost effective solutions for your project. Learn more about how we can help you or contact us to get started today!


Our experienced electricians are on-call to service any electrical issue your company may encounter. We offer property management for all types of properties, large or small. Our competitive rates and attention to detail make us an industry leader in this discipline. Learn more about our property management now!


J.M. Mullen Electric can provide you with 24-hour reliability in response to any electrical issue you may be experiencing. Our on-call service electricians are available anytime, day or night, to troubleshoot the problem and get things back to normal. Need help? Fill out a service ticket and we’ll get right on it!

Electrician, Electrical services,Annapolis MD

Welcome to J.M. Mullen Electric

For over 25 years, J.M. Mullen Electric has become an industry leader in the electrical trade. This is because we work hard for our customers and provide them quality service at a fair price. Throughout the years this has translated into a reputation of trust and distinction, on which we pride ourselves on every day. Because of this, repeat customers and their needs have become a substantial part of our day-to-day operations.

From starting as a small contractor working locally in the Baltimore area, our geographical scope has grown to cover all of central Maryland. From Baltimore County to Calvert County, from the Eastern Shore to the District of Columbia, J.M. Mullen Electric provides fast and dependable service that our customers have come to appreciate.

Feel free to give us a call regarding any electrical installation. We have the knowledgeable office staff to get the job off the table quickly; the experienced electricians to handle the installation effectively, and follow-up service upon completion to ensure your complete satisfaction.

Our customers include general contractors, developers, property managers, bankers, landlords, restaurant owners, retailers, and residential customers. Customer satisfaction is at the forefront of our overall mission because we know how important effective communication is in providing service quality. Our staff is prepared to see through any project, on time and budget.

Why choose us?

  • 24 Hour Reliability
  • Cost Effective
  • Experienced
  • Customer Oriented
  • Dedicated

Our experienced and personable electricians are knowledgeable in all electrical fields. Our office staff has been working in the industry for a combined 61 years, giving us unparalleled experience in managing projects from start to finish! Contact us today to get started on your project!

What our clients say about us

John - I wanted to take a moment and pass on my sincere appreciation to all the lads for all their hard work and dedication over this past weekend in getting all the switchgear swapped out for our new generator. It was a lot to accomplish and I really do appreciate the work of Glen Watson, Bill Lawver, Steve Frostbutter, Tommy Bednarik, James Bolin, Matt Smith, Tim Mullen, Nick Jones, Drew Mann, Tom Chandler, Scott Ike, Luke Akers, KC Cranford and of course you. In true J.M. Mullen Electrical Services fashion, you got the job done ahead of schedule and I had no worries throughout the whole process.
Mark Smith
Facilities Development Manager / SECU
Mazzuca Contracting has been working with JM Mullen Electrical Services for the last ten years. We feel JM Mullen has the experience and professionalism to handle any level of work we award to them. They provide a quality project with the pro-active approach and problem solving method to complete projects on time and within budget. I feel working with JM Mullen I get a personal family experience with professional, knowledgeable company backing up their work.
Butch Farabaugh
HITT Contracting has enjoyed a 10 year+ long and successful relationship with JM Mullen electrical company. They have consistently provided excellent, professional and flexible service on many projects including, large tenant improvements, heavy renovations, new construction and service projects. We recommend JM Mullen without hesitation or reservations.
Christian Zazzali
Vice President / HITT Contracting Inc.
JM Mullen's commitment to service and quality is outstanding. Their ability to focus on customer needs while providing integral project solutions is excellent. We look forward to working with them on many more successful projects.
Andrew S. Fishback
Project Designer / Hammond Wilson


Weekly articles about news, trends and ideas

May 2018
21st May 2018

The Differences Between Residential and Commercial Electrical Services

Electrician, LightingsSterling Optical Commercial Electrical Work

There are some significant differences between residential and commercial electrical services, and not every electrici

an is qualified to do both types of work. Differences between commercial and residential services include the different levels of energy demands, the different grade or quality of materials, and the different environments where wiring is installed.

Residential wiring is typically plastic sheathed wiring and doesn't use conduits, even though they can be used. In commercial construction, conduit is always used. The power from the utility company varies greatly between residential and commercial applications. Homes use single-phase power that has two 120-volt wires (or legs) and a neutral wire. Commercial buildings use three-phase power which consists of two 120-volt legs, and one 208-volt leg and a neutral wire. Commercial electrical applications require power demands for larger electrical units and three-phase power enables power to flow more smoothly to needed areas.

The quality, or grade, of electrical materials also differs between residential and commercial buildings. Commercial materials are more resistant to heat, corrosion, and chemical exposure. They are subject to different standards, and are governed by different codes. Some commercial buildings, such as hospitals, need a secondary or backup source of power with the ability to withstand more demanding usage.

While homeowners may consult with an electrician when undertaking a major remodel, commercial electricians are more likely to confer with architects, designers, and contractors in the course of their work. They look at a project from a broader point of view and may provide detailed drawings and plans for electrical installations.

There are also differences in the electricians who are qualified to work on commercial versus residential buildings. Residential electricians have to be licensed by local and state agencies. Electricians who work in the commercial space are not only licensed, but have to complete a commercial electrician apprenticeship program in order to get their certification. They do some of the same jobs as licensed electricians, but they also take on more sophisticated and larger scale projects.

JM Mullen Electrical Services are experienced at new commercial construction, renovations, and have worked on projects such as an indoor soccer fields, religious buildings, and restaurants. Contact us today to find out more about our commercial services and qualifications.

12th May 2018

Converting A Garage Into Living Space

If your car hasn't been in the garage for years and the garage is beginning to resemble a storage unit, it may be time to convert this wasted space into more living space. This addition may increase the value of your house if you decide to sell it.

One of the most important considerations is what type of electrical wiring you'll need. Some of these considerations will depend on what the end product will be.

7th May 2018

Choosing An Electrician

When you need an electrician, it's important to select the right one. Electrical work for your home or business is critical and must be safe and up to local and national codes. Spending the time to research the best electrician for your needs will save time and money. Here are five things to consider when you need an expert. 

Apr 2018
28th Apr 2018

Protecting Rental Property

Whether your rental property is an individual home, an apartment, or a large commercial complex, it's important to safeguard your investment with regular, professional maintenance. Electrical, plumbing, and HVAC systems should be checked to prevent costly repairs or replacement. In addition, a well-maintained home ensures tenant safety and maintains property value. Regardless of the size of your rental property, a professional electrician is an important member of your property management team.