Johnston Electrical Services has been handling electrical work in Parker and across Douglas County since 1994. Homeowners, landlords, property managers, and business owners all call us when they need wiring done right the first time. We work around your schedule, and same-day service is available for urgent calls. Work performed by licensed electricians, start to finish. Schedule it. We wire it. You're powered.
Some homes need a full rewire. Others just need one outlet fixed. Either way, we start by figuring out exactly what is going on before we touch anything.
Dead outlets, flickering lights, and breakers that keep tripping are the calls we get most often. These problems are rarely random. A dead outlet might trace back to a tripped GFCI upstream. Flickering lights can point to a loose connection, a failing breaker, or a load issue deeper in the panel. A breaker that trips repeatedly is telling you something, and ignoring it is not a safe option.
When we arrive, we run through a full diagnostic. We check the outlet, the circuit, the panel connection, and any related wiring. Where GFCI or AFCI protection is missing or outdated, we flag it and explain what current code requires. You get honest recommendations on repairs, never an upsell. Leave the breakers to us.
From older homes to new commercial builds, panel capacity is one of the first things we look at when a customer describes recurring electrical problems.
A 100-amp panel made sense decades ago. It does not make sense today in a home with an EV charger, a home office, an electric range, and a washer and dryer all pulling power at the same time. We handle panel replacements, 200-amp service upgrades, subpanel installations, and load calculations to make sure the new setup can carry what you are actually running.
Dedicated appliance circuits often come up during this conversation. A refrigerator, a chest freezer, a microwave, or a large shop tool each runs more reliably and safely on its own circuit. We pull the permits, do the work to code, and handle the inspection process. No-pressure estimates, priced up front. We keep your home powered and safe.
Choosing the right electrical fix is easier than it sounds, and outlet and switch work is a good example. Most of these jobs take a few hours, and the difference in safety and function is immediate.
We install standard outlets, GFCI outlets in kitchens, bathrooms, and garages, and USB outlets where they make sense. Dimmer switch installation is one of the most requested upgrades we handle. For landlords and property managers, we also make sure rental units meet current code before a new tenant moves in. Code-compliant wiring matters for habitability, and we document the work clearly.
We've handled everything from a flickering light to a full rewire, and lighting installation sits squarely in the middle of that range.
We install recessed lighting, under-cabinet lighting, and standard fixture replacements throughout the home. Outdoors, we handle security lighting, motion sensor lights, and landscape lighting for both residential and commercial properties. LED and recessed fixtures are popular upgrades because they cut energy use and hold up better over time. Ceiling fan installation and wiring is another common call, especially in rooms that run warm. Reach out and an electrician will follow up.
Here's what most people get wrong about their wiring: age alone is not the problem. The problem is when old wiring can no longer safely carry modern electrical loads.
Knob-and-tube wiring and aluminum wiring both present real risks in homes that have been updated over the years without addressing the original wiring. We handle full rewires, partial rewires, and targeted remediation for both. If you are finishing a basement, adding a room, or converting a garage into a workspace, we run the new circuits and bring that space up to code.
Workshops, garages, and home additions all have specific wiring needs. We also wire hot tub hookups, which come up regularly in this part of Colorado. No pressure and no gimmicks, just safe, solid wiring. We'll sort the wiring and clean up after.
Douglas County winters are hard on homes. Extended cold snaps, ice storms, and heavy snow are routine from late fall through early spring. The electrical work in this section comes up constantly in Parker and the surrounding area because the climate demands it.
Front Range snowstorms can knock out power for hours or days. For households with electric heat, medical equipment, or a home office, a multi-day outage is more than an inconvenience.
We handle generator hookups and transfer switch installation for both standby generators and manual transfer switch setups. Our scope is the electrical side: the wiring from the generator to the transfer switch, the panel connection, and making sure the system is safe and code-compliant. If you are ready to stop relying on the grid during the next big storm, call for a quote and we will walk you through the options.
Parker has grown steadily, and a lot of the housing stock here was built when electrical loads were much lighter than they are today. EV chargers, home offices, electric appliances, and added square footage all push panels toward their limits.
We upgrade panels to 200-amp service, add subpanels for detached garages or additions, and handle the service entrance work that comes with a full upgrade. Electric heating loads in particular can stress an undersized panel during a Colorado winter. We size the new panel for what you are running now and what you are likely to add in the next few years.
Frozen pipes and roof ice dams are routine winter risks in Parker and the surrounding Douglas County area. Heat tape is a practical solution, but it needs to be wired correctly to work safely and reliably.
We run a dedicated circuit for heat tape, wire the system to the appropriate load, and make sure the installation meets code. A properly wired heat tape system can prevent thousands of dollars in freeze damage. If you are heading into winter without it, now is the time to call.
We're proud to be the local electricians this community calls first. That means showing up for all of it: the single-outlet fix in a Parker bungalow, the full panel upgrade in a Castle Rock commercial space, the pre-lease safety inspection for a rental in Highlands Ranch.
Homeowners call us for repairs, upgrades, and new installations. Landlords and property managers rely on us to keep rental units safe and code-compliant between tenants. Businesses in Parker, Lone Tree, Franktown, Elizabeth, and Aurora call us for office wiring, warehouse circuits, and everything in between.
Electrical safety inspections and pre-purchase inspections are part of what we do for all of these clients. Whether you are buying a home, preparing a property to rent, or just want to know what shape your wiring is in, an inspection gives you a clear picture. Work performed by licensed electricians, documented and explained in plain language.
We've handled everything from a flickering light to a full rewire, and one thing that never changes is how we handle pricing. You get the number before the work starts, not after.
Call for a quote and we will walk through what the job involves, what it will cost, and when we can get there. Same-day availability, after-hours calls, and weekend scheduling are all options depending on the job. We do not believe in making you wait a week for a breaker replacement. Affordable rates. Flexible timing. Safe wiring.
Honest recommendations on repairs, never an upsell. If a repair is the right call, we will tell you. If a replacement makes more financial sense, we will tell you that too.
We start with a walkthrough of the problem or the scope of work before touching anything. We run a diagnostic on the affected circuit or system, explain what we find, and give you a clear picture of the repair or installation before we begin. You know what the job involves and what it will cost before any work starts.
You do not have to be present for the entire visit, but someone needs to provide access at the start and be reachable by phone if questions come up mid-job. For panel work or anything that requires shutting off power to the whole home, it is helpful to have someone available to confirm timing.
Yes. We pull permits when the work requires them and schedule inspections as part of the process. Panel upgrades, service entrance work, and new circuit runs in finished spaces typically require a permit in Douglas County. We handle that coordination and let you know what to expect.
A single outlet or switch replacement usually takes an hour or less. Ceiling fan installation is typically one to two hours depending on whether existing wiring is in place. A panel upgrade or service entrance replacement is generally a full day. We give you a realistic time estimate when we quote the job so you can plan accordingly.
A burning smell near an outlet usually points to overheating wiring, a failing outlet, or an arc fault in the circuit. Near the panel, it can indicate an overloaded or failing breaker. Either situation warrants an immediate call. Do not ignore a burning smell near electrical equipment.
Breakers that trip frequently, a panel that feels warm to the touch, breakers that will not reset, flickering lights throughout the home, and a buzzing sound from the panel are all signs worth taking seriously. These point to a panel that may be undersized, aging, or failing, and each one warrants a professional look.
Discolored or warm outlets, lights that flicker when appliances run, a persistent burning smell, and wiring that has never been inspected in a home built before 1980 are all warning signs. Knob-and-tube and aluminum branch-circuit wiring both carry elevated risk when the home's electrical load has grown beyond what the original wiring was designed to handle.
Yes. Every job we complete follows current National Electrical Code standards and local Douglas County requirements. We pull permits when required and schedule inspections as part of the process. Code-compliant wiring protects your home, your family, and your property value.
Flickering lights can point to a loose connection at the fixture, the switch, or the panel, a failing breaker, or a load issue when a large appliance kicks on. Occasional dimming when a major appliance starts is common, but persistent flickering or dimming across multiple rooms is worth a diagnostic call.
A Level 2 home EV charger requires a dedicated 240-volt circuit, correct wire sizing, and a breaker with available capacity in your panel. We check the panel first to confirm it can support the load. If an upgrade is needed before the charger goes in, we handle both in the same project. Every install is done to code and inspected as required.
Johnston Electrical Services has served Parker, Douglas County, and the surrounding communities for more than 30 years. When you need an electrician, you want someone who knows the area, shows up on time, and does the work right.
Call (720) 623-9659 to schedule service or get a quote. Call in the morning. Powered by afternoon. Follow-up when you need it.
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