Johnston Electrical Services has been wiring Parker homes and businesses since 1994. That is 32 years of showing up on time, doing the work right, and standing behind every job we complete. We're proud to be the local electricians this community calls first. From a single tripped breaker to a full commercial buildout, we bring the same straightforward approach every time: honest pricing, quality workmanship, and no runaround.
We handle the full range of residential and commercial electrical work. Repairs and troubleshooting, breaker panel upgrades, outlet and lighting installation, EV charger circuits, backup generator hookups, whole-home rewiring, and more. Work is performed by licensed electricians who know Douglas County's housing stock, its building codes, and the kind of weather that puts real demands on a home's electrical system. Schedule it. We wire it. You're powered.
From older homes to new commercial builds, we have watched Parker grow from a small town into one of Colorado's most active communities. When we started in 1994, the area looked very different. Over the decades, we grew right alongside it, adding crew members as the subdivisions expanded and the commercial corridors filled in. The same commitment to quality wiring and honest service that guided our first job still guides every one we take today.
Our clients include homeowners tackling a single repair, property managers keeping rental units up to code, general contractors who need a reliable electrical sub, and retail and office tenants fitting out new spaces. No pressure and no gimmicks, just safe, solid wiring on every project, regardless of size. Leave the breakers to us.
We've handled everything from a flickering light to a full rewire, and the everyday repair calls are still the backbone of what we do. Dead outlets, GFCI breakers that keep tripping, lights that flicker when the dishwasher runs, a circuit breaker that trips the moment you plug something in. These are the problems homeowners and business owners deal with regularly, and most of them have a clear cause once a licensed electrician takes a look.
We carry the tools and parts to handle most common repairs on the first visit. We also install and test GFCI and AFCI protection, which modern code requires in kitchens, bathrooms, garages, and other areas of the home. If your smoke detector wiring needs attention or a bathroom exhaust fan needs a dedicated circuit, we can handle that on the same call. We offer same-day scheduling options when availability allows, so you are not left waiting days for something that needs attention now. Honest recommendations on repairs, never an upsell. We keep your home powered and safe.
Some homes need a full rewire. Others just need one outlet fixed. The difference usually comes down to the age of the home and how the original wiring was done. Parker's housing stock spans several decades, and we see everything from older homes with knob-and-tube or aluminum wiring to newer builds that simply need more capacity for today's appliances.
If your home is running on a 100-amp panel and you are adding a home office, an EV charger, or a large appliance, a service upgrade to 200 amps is often the right move. We handle the full job: panel replacement, service entrance upgrades, load calculations, and subpanel installation where a single panel is not enough. For homes with aluminum branch-circuit wiring or original knob-and-tube, we walk you through the remediation options and what each one involves before any work begins. No surprises, no pressure. We'll sort the wiring and clean up after.
Choosing the right electrical fix is easier than it sounds, especially when you have someone who can walk you through the options. We install standard outlets, GFCI and AFCI outlets, USB outlets, and dimmer switches throughout the home. If you are remodeling a kitchen or bathroom, we can rough in the circuits and bring the outlet placement up to current code at the same time.
On the lighting side, we do recessed and LED lighting, under-cabinet lighting, security and motion-sensor lights, and exterior landscape lighting. A well-planned lighting layout makes a real difference in how a room feels, and we can help you think through placement before we start cutting. Ceiling fan installation and wiring is another common request, particularly in bedrooms and covered outdoor spaces where airflow matters. Reach out and an electrician will follow up.
Colorado has one of the highest EV adoption rates in the country, and Parker's commuter population has driven strong demand for home charging. A Level 2 home EV charging station charges your vehicle several times faster than a standard wall outlet, and the difference in convenience is significant if you drive daily.
We handle the full installation: dedicated circuit, proper wire sizing, breaker, and the charger itself. Before any work begins, we check your panel's available capacity and let you know if an upgrade is needed to support the load. Every install is done to code and inspected as required. Call (720) 623-9659 for a quote on EV charger installation and we will give you a clear picture of what the job involves and what it will cost.
Colorado's Front Range sees its share of winter storms, and a power outage in January is a different problem than one in July. Backup generator hookups give Parker homeowners a reliable way to keep the lights on, the refrigerator running, and critical systems powered when the grid goes down.
We handle the electrical side of generator installation: transfer switch installation, panel connection, and all associated wiring. A properly installed transfer switch keeps your generator from backfeeding the utility line, which is both a code requirement and a safety issue. We also recommend pairing a generator hookup with whole-home surge protection, which guards your appliances and electronics when power is restored after an outage.
Here's what most people get wrong about their wiring: commercial electrical work is not just a bigger version of a residential job. The code requirements, load calculations, and coordination with other trades are different, and the stakes for a business are higher when downtime costs money.
We work with Parker-area businesses on tenant improvement electrical, retail and office fit-outs, new construction rough-in, and commercial panel upgrades. Property managers and general contractors count on us for scheduling flexibility and clear communication, because a job that runs late or goes over budget affects their whole project. We provide no-pressure estimates, priced up front, so you know what you are committing to before work begins. Subpanel installation, commercial lighting, and code-compliant wiring for additions and garage or workshop builds are all part of what we do.
Electrician pricing is one of the most searched topics online, and for good reason. A panel upgrade and a single outlet install are completely different in scope, and the numbers you find on general pricing sites rarely reflect what a job actually costs in your specific home. Factors like panel age, wire runs, wall material, and permit requirements all affect the final number.
We give you a clear estimate before any work begins. Pricing is explained upfront, and if something unexpected comes up mid-job, we stop and talk to you before we proceed. You will never get a surprise on the invoice. The best way to get an accurate number for your project is to call (720) 623-9659 and describe what you need. We will ask a few questions and give you a realistic range before we ever show up at your door.
We are based in Parker and serve communities throughout Douglas County and the surrounding area. Our regular service area includes Castle Rock, Lone Tree, Highlands Ranch, Centennial, Aurora, and Elizabeth. If you are nearby and not sure whether we cover your area, give us a call. We will let you know right away.
Electrical work that is not done to code is not just a permit problem. It is a safety problem. Improperly wired circuits, undersized breakers, and missing GFCI protection are among the most common causes of residential electrical fires. Every job we complete follows current National Electrical Code standards and local Douglas County requirements.
We pull permits when the work requires them and schedule inspections as part of the process. If you are buying or selling a home and need an electrical safety inspection to document the current condition of the system, we can provide that as well. Safe wiring protects your family, your property, and your investment.
We have been wiring homes and businesses in Parker since 1994, which puts us at more than 30 years of local electrical work. We watched Parker grow from a small town into one of Colorado's most active communities, and we grew right alongside it.
The people who show up are working electricians who know Colorado code and have experience with the range of homes and commercial buildings in this area. Work is performed by licensed electricians on every job, regardless of size.
Yes. Douglas County's housing stock spans several decades, and we have worked in homes with knob-and-tube wiring, aluminum branch circuits, undersized panels, and wiring that has been modified over the years without a permit. That history gives us a practical understanding of what to look for and what to recommend.
We are available every day from 5:00 AM to 9:30 PM. If something urgent comes up outside those hours, call (720) 623-9659 and we will do our best to help.
Yes. Our regular service area includes Castle Rock, Lone Tree, Highlands Ranch, Centennial, Aurora, Elizabeth, and Franktown. If you are in the broader Douglas County area and not sure whether we cover your location, call and we will confirm right away.
We stand behind the work we do. If something is not right after we leave, call us and we will come back and look at it. Our goal is a job that holds up, not one that generates a second call for the same problem.
We carry the tools and common parts for the jobs we handle most often, including outlet and switch replacements, breaker swaps, GFCI and AFCI installation, and basic fixture work. Larger jobs like panel upgrades are scoped in advance so we arrive with the right materials.
Johnston Electrical Services has been the trusted name for electrical work in Parker since 1994. Thirty-two years of residential and commercial experience, a team of licensed electricians who know this area, and a commitment to doing the job right the first time. Whether you need a same-day repair or want to plan a panel upgrade for next month, we are ready to help.
Affordable rates. Flexible timing. Safe wiring.
Call (720) 623-9659 to get a quote or schedule service. We handle emergencies around the clock, and we offer same-day options when your schedule or situation calls for it. One call is all it takes to get started.
We handle the full range of residential and commercial electrical work in Parker and throughout Douglas County. Whether you need a quick repair or a major panel upgrade, every job gets an honest estimate before we touch a wire. Here is a plain-language look at what we offer, who each service fits, and what to expect when you call.
| Electrical Service | What It Covers | Ideal For | What to Keep in Mind |
|---|---|---|---|
| Heat Tape Installation | dedicated circuit for heat tape, outdoor-rated wiring and connection, pipe and roof edge applications, GFCI-protected outlet installation | Douglas County homeowners dealing with frozen pipes or recurring roof ice dams each winter | Heat tape systems require a properly wired dedicated circuit and outdoor-rated wiring. Incorrect wiring is a fire risk. We get the electrical side done right. |
| Dedicated Appliance Circuits | dryer and range circuits, hot tub and spa circuits, workshop and garage circuits, well-pump and block-heater circuits | homeowners adding a major appliance, a workshop, or outdoor equipment that needs its own circuit | A dedicated circuit prevents overloads and protects the appliance. We size the circuit correctly for the load from the start. |
| Electrical Repairs & Troubleshooting | flickering or dimming lights, dead outlets and switches, tripping breakers, buzzing or warm fixtures | homeowners and landlords dealing with recurring or sudden electrical problems | Most repairs are diagnosed and completed in a single visit. Warm or sparking outlets should be called in the same day. |
| Breaker & Fuse Repair | breaker replacement, fuse panel assessment, circuit fault diagnosis, panel interior inspection | homes where a single circuit keeps tripping or a breaker no longer holds | A breaker that trips repeatedly is not just an inconvenience. It often points to an overloaded circuit or a wiring fault that needs attention. |
| Wiring & Circuit Installation | whole-home rewiring, addition and remodel wiring, new circuit runs, rough-in and finish wiring | homeowners finishing a basement, adding a room, or updating wiring in an older home | Permit-ready rough-in work and final inspection-ready finish wiring are standard on every project we take on. |
| Backup Generator Installation | standby generator hookup, transfer switch installation, dedicated generator circuit, panel capacity assessment | Parker homeowners who need reliable power through winter storms and multi-day outages | We handle the full electrical side of the installation. The transfer switch is wired to code so the system cannot back-feed the utility line. |
| Whole-Home Surge Protection | panel-level surge protector installation, protection for sensitive electronics, whole-home and point-of-use options, post-storm assessment | homeowners with home offices, entertainment systems, or smart-home equipment vulnerable to voltage spikes | A panel-level surge protector is the first line of defense. It does not replace point-of-use protection for high-value electronics, but it handles large surges at the source. |
| Lighting Installation | recessed and can lighting, security and motion-sensor lights, landscape and outdoor fixtures, under-cabinet and accent lighting | homeowners upgrading interior lighting or adding exterior security lighting | Outdoor lighting circuits need weatherproof wiring and proper GFCI protection. We handle the full installation from circuit to fixture. |
| Outlet & Switch Installation | GFCI and AFCI outlets, USB and smart outlets, dimmer switches, outdoor and weatherproof receptacles | homeowners updating older outlets, adding kitchen or bath protection, or installing modern switch controls | GFCI protection is required by code in kitchens, bathrooms, garages, and outdoor locations. Older homes often lack it. |
| Electrical Safety Inspections | full-home wiring inspection, code-violation identification, older panel and wiring assessment, pre-purchase or insurance inspections | buyers, sellers, landlords, and homeowners who want to know the condition of their electrical system | Older homes in the area often have wiring that has not been evaluated in decades. An inspection gives you a clear picture before problems develop. |
| Ceiling Fan Installation | fan and light combo installation, existing fixture swap, new ceiling box and wiring, remote and switch wiring | homeowners replacing a light fixture with a fan or adding a fan to a room that lacks one | Rooms without an existing fan-rated box need a new ceiling box installed before the fan goes up. We check and handle that as part of the job. |
| Electrical Panel & Service Upgrades | 200-amp panel replacement, service entrance upgrade, subpanel installation, load calculation and permit coordination | homes adding EV chargers, electric heating loads, home offices, or major appliances that exceed the current panel capacity | Panel upgrades require a permit and utility coordination. We handle both and make sure the finished work passes inspection. |
How do I know if my home needs a panel upgrade?
A few signs point clearly in that direction. If your breakers trip regularly under normal use, your panel runs warm to the touch, or you are planning to add a significant new load like an EV charger or electric heating, your current panel may not have the capacity. Homes with original 100-amp service are especially likely to need an upgrade. We assess the panel when we arrive and explain what we find before recommending anything.
What causes a breaker to keep tripping?
Repeated tripping usually points to one of three things: the circuit is overloaded with more load than it was sized for, there is a fault somewhere in the wiring or a connected device, or the breaker itself has worn out and no longer holds correctly. We trace the cause before we replace anything, so the fix addresses the actual problem.
Is the electrical work permitted and inspected?
Yes, on jobs that require a permit under Colorado code. Panel upgrades, service entrance work, and significant new wiring all require a permit and a final inspection. We handle the permit process and make sure the work is inspection-ready before we close up. You get documentation that the work was done to code.
Upfront Quotes With No Surprise Fees
We give you an estimate before work begins and we stick to it. If scope changes mid-job, we stop and talk to you first. No charges appear after the fact without a conversation.
How do estimates and pricing work?
We give you an estimate before any work begins and we stick to it. If something unexpected comes up mid-job, we stop and talk to you before proceeding. The estimate covers labor and standard materials for the work as described. You will not see charges appear after the fact without a conversation first.
Can I get same-day service for an urgent electrical problem?
Same-day availability is offered for many jobs depending on current scheduling. For urgent problems like a sparking outlet, a dead circuit, or a tripping main breaker, call us the same day and we will do our best to get out quickly. Electrical problems do not keep business hours, and we are reachable when something goes wrong after hours.
What does flickering or dimming lights usually mean?
Occasional flicker when a large appliance starts up is often normal. Persistent flickering, dimming that happens across multiple rooms, or lights that flicker without an obvious cause can point to a loose connection, an overloaded circuit, or a problem at the panel. These are worth a call rather than a wait-and-see approach.
Work Performed by Licensed Electricians
Every job on our schedule is handled by licensed electricians who know Colorado code and know what homes in this area typically need. That is the standard on every call, large or small.
Why would an outlet or switch stop working?
The most common reasons are a tripped GFCI outlet somewhere upstream on the circuit, a tripped breaker, a loose wire connection at the outlet or switch itself, or a failed device. GFCI outlets in bathrooms, kitchens, and garages protect other outlets on the same circuit, so a tripped GFCI in one room can kill power to an outlet in another. If resetting the GFCI does not restore power, call us.
Is it safe to do electrical work myself?
Minor tasks like swapping a light bulb or resetting a tripped breaker are straightforward. Anything involving wiring, opening a panel, running new circuits, or replacing outlets and switches carries real risk if done incorrectly. Wiring errors cause fires and shock hazards that may not show up immediately. Work performed by licensed electricians is the right call for anything beyond the most basic tasks.
Experienced With Older and Newer Homes
Parker has a mix of homes built decades apart, and the electrical needs differ significantly. We are comfortable working in both older homes with aging wiring and newer builds that need circuits added for modern loads.
What do I need to know before installing an EV charger at home?
A Level 2 home charger requires a dedicated 240-volt circuit, and your panel needs enough available capacity to support it. We assess the panel first, confirm the capacity, run the dedicated circuit, and install the charger in the location that works best for your garage or driveway setup. If the panel needs an upgrade before the charger goes in, we handle both in the same project.
How does a backup generator installation work?
We handle the full electrical side of the installation: generator hookup, transfer switch installation, and the dedicated circuit and panel capacity the system needs to run safely. The transfer switch is wired so the generator cannot back-feed the utility line, which is a code requirement and a safety requirement. We confirm the panel can carry the generator load before anything goes in.
Do I need to be home while the work is done?
For most jobs, yes. We need access to the panel, the work area, and occasionally other parts of the home to trace circuits or run wiring. If you have a specific situation, such as a rental property where you cannot be present, call us and we will work out the access details in advance.
Call (720) 623-9659 and we will walk you through what your job involves, give you an honest estimate, and get it on the schedule.
(720) 623-9659