Outlet and GFCI Installation

Outlets are the cheapest electrical work in a house right up until the moment the answer is “there is no circuit there.” This page covers both cases, plus where code actually requires GFCI protection and what to do about the two-prong outlets in an older Littleton home.

Quick Answer: What Does Outlet and GFCI Installation Cost in Littleton?

Outlet, switch and GFCI installation with MZ Electric typically runs $133–$1,300, based on our own job history across Littleton, Highlands Ranch, Centennial, Parker and the south Denver metro.

The low end is replacing a device on an existing box. The high end is running a new circuit from the panel to a location that has never had power. Most jobs are much closer to the low end than homeowners expect, unless a new circuit is involved.

Outlet, Switch and GFCI Cost — MZ Electric

Service MZ Electric range What it covers
Outlet, switch and GFCI replace / install $133–$1,300 Device, box work, terminations, and testing
Outlet or switch repair $300–$450 Diagnosing and correcting a device orconnection that has failed
Complex wiring issue across multiple circuits add $100–$300 When the fault crosses more than one circuit

Common add-ons, when the job needs them:

Add-on MZ Electric range
New circuit run from the panel $500–$1,200
Number of outlets $75–$175
GFCI vs. standard outlet $92–$137
USB or smart outlet $92–$137
Outdoor or wet location $100–$133

What Determines Where You Land in That Range

  • Whether a circuit already reaches the location. Replacing a device on an existing box is quick. Running a new home run from the panel is the single biggest cost in this category.
  • How many devices, on one visit. The setup and travel are the same whether we replace one receptacle or eight, so the per-device cost drops significantly on a batch.
  • The device type. A standard receptacle, a GFCI, a USB or smart receptacle, and a multi-location smart switch are progressively more work and more hardware.
  • Location and exposure. Outdoor and wet locations require weather-resistant devices and in-use covers, and sometimes conduit, which is why they carry their own factor.

A Note for South Denver Metro Homeowners

  • Code has expanded where GFCI protection is required, and it keeps expanding. The National Electrical Code requires ground-fault circuit-interrupter protection for receptacles in bathrooms, kitchens, laundry areas, garages, unfinished basements and outdoors, among other locations. Homes built before those requirements were adopted are not required to retrofit, but the protection is inexpensive relative to what it prevents, and it is the single highest-value electrical upgrade per dollar in an older house.
  • Two-prong outlets are extremely common in our older Littleton and Centennial stock, and there is a legitimate answer. Where a receptacle has no equipment grounding conductor, code recognizes replacing it with a GFCI receptacle, labeled “No Equipment Ground,” as an acceptable option rather than requiring a full rewire. That gives you the shock protection and a modern three-prong receptacle without pulling new wire through finished walls. It does not create a ground, so it does not protect surge-sensitive equipment the way a grounded circuit does. We will explain both sides for your specific situation.
  • Outdoor receptacles here take real weather. Between deep winter cycles and summer hail, exterior devices in this metro need weather-resistant receptacles and in-use covers rather than the flip lids common on older installs.
  • New circuits require a permit and inspection. Colorado’s State Electrical Board requires electrical work to be performed by a licensed electrician in compliance with the National Electrical Code, with permits and inspections through the state board or the local authority. Device replacement is a different situation from a new circuit, and we tell you which one you have.

Two-Prong Outlets in an Older Littleton Home:

A homeowner in an older Littleton home called us because the house still had two-prong outlets throughout, which meant no ground and nowhere to plug in a three-prong cord without an adapter. We replaced every one of them with three-prong outlets and added GFCI protection, and finished the whole house in one day.

We recommended GFCI protection because the wiring in the walls had no ground wire, and adding one means opening walls and rewiring the house. A GFCI doesn’t create a ground, but it shuts off power the instant it senses current leaking where it shouldn’t, which is the shock protection that matters most for the people living there. Code allows this approach as long as the outlets are labeled “No Equipment Ground,” so the homeowner got safe, usable outlets in a day instead of a rewire.

The Cheapest Way to Buy This Work

We would rather tell you this than have you find out after three separate visits.

Because the drive and the setup are the same regardless of device count, the per-outlet cost falls sharply when we do several at once. Our “number of outlets” factor runs $75–$175, which is well below the cost of a standalone visit. If you have a loose switch in the hall, a dead receptacle in the garage, and a GFCI you have been meaning to add in the laundry, book them together.

Signs You Should Call a Pro

  • An outlet or switch is warm, discolored, sparking, or buzzing
  • A plug falls out of a receptacle, or the receptacle feels loose in the wall
  • A GFCI trips repeatedly, or will not reset
  • You still have two-prong outlets, or three-prong outlets with no actual ground
  • You are running extension cords or power strips as a permanent solution
  • You want a receptacle where there has never been one

Get an Upfront Outlet and GFCI Quote in Littleton

MZ Electric is family owned and operated, with over 15 years serving Littleton, Highlands Ranch, Centennial, Parker and the Denver metro, available 24/7. Our team members are background-checked, we stand behind our work with a satisfaction guarantee, and we hold Colorado electrical license #EC7816. Financing and a maintenance plan are available. *Integrity, creativity, experience.*

Call (303) 933-9220 or schedule at mzelectric.com.

Frequently Asked Questions

Outlet, switch and GFCI installation with MZ Electric typically runs $133–$1,300, with the GFCI device itself carrying a $92–$137 factor over a standard receptacle. Most device replacements sit near the low end of the range.

The National Electrical Code requires GFCI protection for receptacles in locations including bathrooms, kitchens, laundry areas, garages, unfinished basements and outdoors. Existing homes are generally not required to retrofit, but it is inexpensive protection.

Usually not. Where there is no equipment grounding conductor, code recognizes installing a GFCI receptacle labeled “No Equipment Ground” as an acceptable option. That gives you shock protection and a three-prong receptacle without new wire. It does not create a true ground, so we will walk through whether that matters for what you are plugging in.

That requires a new circuit run from the panel, which we price at $500–$1,200 on top of the device work, and it requires a permit and inspection.

Yes, meaningfully. Our per-outlet factor is $75–$175 when devices are done on the same visit, which is well below the cost of separate visits.

Sources

● Pricing: MZ Electric Price Benchmarks, contractor-entered ranges and price factors

● National Fire Protection Association, NFPA 70 National Electrical Code — Article 210.8 ground-fault circuit-interrupter protection for dwelling units; Article 406.4(D) replacement of receptacles where no equipment grounding conductor exists

● Colorado Department of Regulatory Agencies, Division of Professions and Occupations, State Electrical Board — licensing, permit and inspection requirements: dpo.colorado.gov/Electrical

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