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Find Electrical wiring or panel upgrade pros in Rockville

Avatar for William G Hyman Electrical Contractor
William G Hyman Electrical Contractor
4.8(
439
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 1980

Free estimates

Warranties offered

"Project was upgrading service from 100 to 200 amps, installing new panel, new meter, grounding, and a new drop from the street. I gathered a number of quotes, and by far felt the most comfortable with Mr. Hyman. Plus the price for the job was in line with my expectations. The work was completed quickly and professionally. I'd definitely recommended using them."
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+6

4 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Ahmad Electrical Service
Ahmad Electrical Service
4.9(
57
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Emergency services offered

Warranties offered

"Excellent working knowledge of electrical upgrades and is very patient with client. Explained in depth the issues with current service and how to install new panel boxes by code."
Electrical Project
Electrical Project
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+20

17 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Greenleaf Electric, LLC
Greenleaf Electric, LLC
5.0(
117
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Customers say: True professional

"We initially selected Greenleaf Electric to do a circuit/breaker switch upgrade for a new oven based on their outstanding reviews on Angi, replacing our previous Master Electrician who had retired.  Everything that you read in their reviews is true.  Gill is highly competent, experienced, professional and has great communication skills; he's also focused on safely and informing his customers about every aspect of their project.  In the case of the circuit/breaker switch, he determined that with some minor adjustments to the breaker box wiring, the circuit to the oven would not have to be upgraded, saving us several thousand dollars.  We've subsequently had him do a number of smaller projects, all on time and at/under his initial estimates.  Highly recommended!"
Under Cabinet Lighting
Kitchen
Response time1 day
Response rate85%
5 neighbors recently requested a quote
Avatar for NEC Electric
NEC Electric
4.9(
13
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Free estimates

Emergency services offered

"not just professional efficient! Unbelievably fair priced literally less than half of what a major competitor on this site quoted using my own parts and my own wire! Just because there are any energy list doesn’t mean some people won’t try and rip you off and fools will pay it. Mr. NAGY is a professional and very ethical. I’d recommend hiring him again and again!"
Electrical Project
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+9

17 neighbors recently requested a quote
Recommended by69%of homeowners
JOHN MAX ELECTRIC
5.0(
22
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2011

Free estimates

Emergency services offered

"Dominic was great. He arrived right on time and started tracing a hard-to-find short. For over four hours he checked socket after socket, switch after switch, ultimately crawling through spaces I didn't know existed. He found the problem, a rodent-chewed wire that was a likely fire hazard. He corrected the problem with new junction boxes and updated the outdoor sockets. He demonstrated a level of knowledge, professionalism and determination that puts him at the top of my list of go-to electricians. I'll be asking him back soon to take care of some outdoor lights that need upgrading. I hope he won't be bored!"
Electrical Project
Electrical Project
Electrical Project
4 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Vital Electric
Vital Electric
5.0(
43
)

Serving Rockville, MD and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"I hired Vital Electric to assess and fix multiple electrical issues in my new home. Lidwing quickly resolved a reversed polarity outlet, corrected a double-fed garage circuit, and addressed a panel safety concern—all within a two-hour window. Professional, efficient, and knowledgeable. Highly recommend."
Natural history museum
Island light
Island light
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+8

Recommended by60%of homeowners
Avatar for Lomax Electrical Services
Lomax Electrical Services
5.0(
13
)

Serving Rockville, MD and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Lomax Electrical services has Excellent service! They upgraded my electrical panel and updated the lighting throughout my home. Professional, efficient, and reliable?highly recommend"
New Electrical Panel
EV Charging Station
Panel Rejuvenation
Fire Pump Power
Fire Pump Power

+6

12 neighbors recently requested a quote
Avatar for Three Brothers Services, LLC
Three Brothers Services, LLC
4.9(
64
)

Serving Rockville, MD and surrounding areas

Approved

In business since 2009

Emergency services offered

Warranties offered

"Felix came to my home to install 3 low profile electrical outlets underneath my dry bar cabinets this morning. I have under cabinet outlets under my kitchen cabinets, so I wanted them in the dry bar area also. Felix was punctual and professional. He did a great job in installing my stainless steel outlets. Felix did some upgrades to my other electrical outlets in my basement area also. I had taken estimates from other electricians, but Three Brothers Services, LLC offered the most affordable prices for my project. I would definitely recommend this electrical service to friends and family."
Tesla Wall Connector
Tesla Wall Connector
200amps Heavy Up
Hot Tub Wiring Installation
Hot Tub

+2

Response time7 hrs
Recommended by100%of homeowners
Avatar for Hands on Electric
Hands on Electric
5.0(
11
)

Serving Rockville, MD and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Kevin Williams was sent to repair problems created by another electrician hired by Kitchen Saver during an expansive kitchen re-face and cabinet installation. Among other things, he re-located an unsightly transformer that had been previously secured to the inside of the first shelf of a main kitchen cabinet to a lower cabinet out of sight. Voila! Then, he re-routed unsightly wiring previously clamped to the far corner of a glass display cabinet so that it was out of sight. These were difficult puzzles to solve, as the new cabinets had already been installed and there was no longer easy access. Kevin was friendly, professional, and experienced! Great job!"
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+6

4 neighbors recently requested a quote
Recommended by100%of homeowners
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Showing 1-10 of 487
FAQs for electrical wiring or panel upgrade projects in Rockville, MD

Yes, a licensed electrician is essential for this project. Running an electrical service from the road to your house involves connecting to utility power lines, complying with national and local electrical codes, and safely handling high-voltage systems. 

Licensed professionals understand proper wire sizing, grounding requirements, and voltage drop calculations needed for safe installation. Most jurisdictions require permits and inspections that only certified professionals can obtain. The safety risks and potential for property damage make this project inappropriate for DIY attempts.

Overhead installations are less expensive than underground options. For a 1000-foot run, overhead service costs between $8,000 and $15,000, while underground service ranges from $10,000 to $25,000. 

Overhead lines require less labor and fewer materials since they don't need trenching or conduit. However, underground lines offer better protection from weather events and aesthetic benefits. Your decision should balance your budget constraints with long-term reliability and visual preferences.

You might need to upgrade your electrical panel depending on your power requirements. If your existing panel cannot handle the additional load from the extended service, upgrading to a 200-amp service (costing $750 to $2,000) may be necessary. 

A licensed electrician can evaluate your current system and determine if an upgrade is required. Factors include what you'll be powering at the end of the line, existing electrical demand, and whether voltage drop over the distance will affect performance.

Running electric service from the road to a house requires electrical permits from your local building department, costing between $500 and $2,000 depending on your location. You may also need excavation permits for trenching work if installing an underground service. Your utility company will have its own application process for connecting to its grid. A licensed electrical contractor can handle all the necessary permit applications as part of their service, ensuring your installation meets all local code requirements.

The Rockville, MD homeowners’ guide to electrical wiring or panel upgrades

From average costs to expert advice, get all the answers you need to get your job done.