GFCI Outlet Installation Cost Calculator
GFCI Outlet Installation costs $295 to $445 for a typical 3 devices job in 2026, against a national benchmark of $360. Labor runs 2.6 crew hours at $43.61 an hour. Enter a ZIP code to apply that area's measured wages for this work and its regional price level.
What makes up the price
Cost by size
National averages, before any local adjustment. Computed from the same model as the calculator above, so the two always agree.
| How many | Devices | Typical | Range |
|---|---|---|---|
| 2 devices | 2 | $280 | $230 to $350 |
| 3 devices | 3 | $360 | $295 to $445 |
| 4 devices | 4 | $440 | $360 to $550 |
| 5 devices | 5 | $525 | $425 to $650 |
You probably need fewer than you think
This is the thing to read before counting outlets, and it is worth a few hundred dollars.
A GFCI receptacle has two pairs of terminals. LINE is the incoming supply. LOAD feeds everything further along the circuit — and anything connected through LOAD is protected by that GFCI.
So a kitchen with six counter outlets does not need six GFCIs. It needs one, at the first position on the circuit, with the rest wired through its LOAD terminals as ordinary receptacles. They are all protected, they all trip together, and you have bought one $28 device instead of six.
| Devices | Fitted | |
|---|---|---|
| A GFCI at every outlet | 6 | about $600 |
| One GFCI protecting the string | 1 | $200 |
The downstream outlets should be labeled "GFCI Protected" — the stickers come in the box, and an electrician who fits them is one paying attention.
When you do want more than one: where the circuit splits and the branches do not pass through the first device; where you want a bathroom to keep working when the garage trips; and where the first outlet on the run is somewhere inconvenient to reset, in which case a GFCI breaker at the panel is often the better answer.
Ask any electrician quoting several: can one device protect this string?
Where they are actually required
The list has grown through successive code cycles and most people's idea of it stopped at "bathrooms and outdoors". Current requirements in dwellings cover receptacles in:
- Bathrooms — all of them.
- Kitchens — all receptacles, not only the ones serving the counter. This widened in the 2017 and 2020 cycles.
- Garages and accessory buildings.
- Outdoors, including anything on a porch or a deck.
- Crawl spaces and unfinished basements.
- Laundry areas, and within 6 feet of any sink anywhere in the house.
- Wet bar sinks, boathouses, and near pools and tubs.
Recent cycles have also pulled in fixed appliances — dishwashers, and in the 2020 code a range of 250-volt equipment. What applies to you depends on which code cycle your jurisdiction has adopted, which varies by state and sometimes by city.
The important exception: none of this applies retroactively. An older house is not illegal for lacking them. But adding GFCI protection to a kitchen or a bathroom in a house that predates the requirement is one of the cheapest genuine safety improvements available — a few hundred dollars for the whole house, done on one visit.
GFCI, AFCI, and the difference that matters
These get conflated constantly and they protect against entirely different things.
| Watches for | Protects against | Where | |
|---|---|---|---|
| GFCI | Current leaking to ground | Electrocution | Kitchens, baths, outdoors, anywhere wet |
| AFCI | The signature of an arc | Fire from damaged wiring | Bedrooms, living areas, most of the house |
A GFCI compares the current going out against the current coming back. If a few milliamps are going somewhere else — through a person, to ground — it cuts in about a twenty-fifth of a second. It is specifically a shock device.
An AFCI listens for the electrical signature of arcing, which is what a nail through a cable or a loose terminal does before it starts a fire.
Where both are required, dual-function devices exist and are usually cheaper than a GFCI receptacle plus an AFCI breaker. A kitchen typically needs both, which is worth raising when you book.
Why it will not reset
In order of likelihood:
- There is no power to it at all. A GFCI cannot reset without power. Check the breaker first.
- Line and load are reversed. A miswired GFCI will not reset, or will reset and protect nothing. This is the commonest installation error and it is why the test button matters.
- There is an actual fault downstream. Unplug everything on the circuit and try again. If it resets with nothing plugged in, something you plugged in is the problem.
- The device has failed. GFCIs wear out — 10 to 15 years is a reasonable life, less outdoors.
A GFCI that trips occasionally for no visible reason is worth replacing rather than living with. A GFCI that will not reset at all after the checks above needs an electrician.
Nuisance tripping, and the freezer problem
Three common causes of a GFCI that trips when nothing is wrong:
- A long circuit run. Every cable has a small natural leakage to ground, and a long run with many outlets can accumulate enough to be near the trip threshold. Splitting the circuit fixes it.
- Motors. Freezers, sump pumps and some power tools produce a surge at startup that marginal GFCIs read as a fault. This is the classic "the freezer in the garage keeps defrosting" complaint, and it is a real conflict — the code generally requires the protection, so the answer is a dedicated circuit and a good quality device, not removing the GFCI.
- Shared neutrals. On a multiwire branch circuit, a GFCI on one leg sees the other leg's return and trips. It needs a two-pole device or rewiring.
If a GFCI trips repeatedly, that is information rather than an inconvenience. Have it looked at before working around it.
Test them monthly, and know what the test proves
Every GFCI has TEST and RESET buttons, and the instruction is to press TEST monthly. Almost nobody does.
What to know:
- Use the device's own button, not a plug-in tester. Since the 2015 UL standard, GFCIs are self-testing and some will not respond to an external tester the way older ones did — which does not mean they are faulty.
- If TEST does not cut the power, the device has failed and must be replaced. That is the whole point of the test.
- Reset after testing, and check that whatever was plugged in came back on. An unnoticed tripped GFCI is how a freezer in a garage quietly defrosts.
What you are paying for
For one GFCI replacing an existing outlet on a live circuit, at $200:
| Labor, about 1.25 hours | around $76 |
| GFCI receptacle and plate | $28 |
| The call-out | $45 |
| Overhead and margin | the balance |
The device is a seventh of it. This is a labor and travel job, which is why the count matters so much more than the spec:
| GFCIs on one visit | Total | Each |
|---|---|---|
| 1 | $200 | $200 |
| 3 | $360 | $120 |
Make a list. The bathrooms, the kitchen, the garage, the outdoor outlet by the hose — one visit, one call-out. And ask whether a single device can cover each string before counting them individually.
What makes it cost more
- A new position, where cable has to be run to a wall with nothing in it — about 70%, and quick from a basement or attic, slow from neither.
- A new circuit from the panel, about 140%, and more again if the panel is full.
- Plaster or masonry walls, about 25%, because plaster cracks beyond the hole you meant and masonry needs a channel cut or surface conduit.
- A GFCI breaker instead of a receptacle, $50 to $100 for the device rather than $28, which buys whole-circuit protection and a reset at the panel.
Can you do it yourself?
A like-for-like swap on a circuit you can prove is dead is within reach for a confident DIYer, and the device costs $28. Three things make it worth paying somebody:
- Getting LINE and LOAD right, which is the commonest mistake and the one that leaves you with a device that appears to work and protects nothing.
- No ground wire, common before the mid-1960s. A GFCI may be fitted on an ungrounded circuit in some circumstances and must then be labeled "No Equipment Ground" — which is a specific allowance with specific conditions, not a workaround.
- Aluminum wiring, which needs devices rated CO/ALR and special care. If the conductors are silver rather than copper, stop and call somebody.
And whatever you do, prove the circuit is dead with a tester rather than trusting the switch.
Questions worth asking
- Can one device protect this whole string?
- Are the downstream outlets going to be labeled as protected?
- Should any of these be dual-function GFCI and AFCI?
- Would a GFCI breaker be better here than a receptacle?
- Is there a ground at these boxes?
- Is any of this aluminum wiring?
- Can we do every GFCI in the house on one visit?
- Which code cycle does this jurisdiction use, and what does it require here?
- Is there a call-out minimum, and is it included?
Common questions
How much does a GFCI outlet cost to install?
About $200 for one replacing an existing outlet on a live circuit, against a reported $130 to $300 and an average near $210. Three on one visit come to $360, or $120 each, which matches the reported $90 to $200 for a straightforward replacement. A new position needs cable run and comes to about $345, which sits in the reported $150 to $350 for a new installation. Plaster or masonry walls add about 25%.
Do I need a GFCI at every outlet?
No, and this is the thing worth knowing before counting. A GFCI has LINE terminals for the incoming supply and LOAD terminals that feed the rest of the circuit — anything connected through LOAD is protected by that one device. So a kitchen with six counter outlets needs one GFCI at the first position, not six, with the rest wired as ordinary receptacles through its LOAD terminals. That is about $200 instead of $600. The downstream outlets should be labeled "GFCI Protected", and the stickers come in the box.
Where are GFCI outlets required?
In dwellings: all bathroom receptacles, all kitchen receptacles rather than only the counter ones, garages and accessory buildings, outdoors including porches and decks, crawl spaces and unfinished basements, laundry areas, and anywhere within 6 feet of a sink. Recent code cycles have also pulled in fixed appliances such as dishwashers. Exactly what applies depends on which cycle your jurisdiction has adopted, which varies by state and sometimes by city.
Does an older house have to have GFCI outlets?
No — the requirements are not retroactive, so a house that predates them is not illegal for lacking them. But adding GFCI protection to the kitchen, bathrooms, garage and outdoor outlets in an older house is one of the cheapest genuine safety improvements available, at a few hundred dollars for the whole house done on one visit. It also usually comes up at sale, so it is worth doing on your own schedule rather than a buyer's.
What is the difference between GFCI and AFCI?
They protect against different hazards. A GFCI compares current going out against current coming back and cuts power in about a twenty-fifth of a second if a few milliamps are leaking somewhere else — through a person, to ground. It is a shock device, required in kitchens, bathrooms, garages and outdoors. An AFCI listens for the electrical signature of arcing, which is what a nail through a cable or a loose terminal does before starting a fire, and is required in bedrooms and living areas. Where both apply, dual-function devices exist and usually cost less than buying both separately.
Why will my GFCI not reset?
In order of likelihood: there is no power to it at all, so check the breaker first, because a GFCI cannot reset without power. Line and load are reversed, which is the commonest installation error and leaves a device that will not reset or resets and protects nothing. There is a genuine fault downstream, so unplug everything on the circuit and try again. Or the device has failed — GFCIs wear out in 10 to 15 years, less outdoors. If it still will not reset after those checks, call an electrician.
Why does my GFCI keep tripping for no reason?
Three usual causes. A long circuit run, where the small natural leakage of every cable accumulates across many outlets until it sits near the trip threshold — splitting the circuit fixes it. Motors: freezers, sump pumps and some power tools surge at startup in a way marginal GFCIs read as a fault. And shared neutrals on a multiwire branch circuit, where the GFCI sees the other leg's return. Repeated tripping is information rather than an inconvenience, so have it looked at rather than worked around.
Can I put a freezer on a GFCI circuit?
You generally have to, and the classic complaint is real: a garage freezer on a GFCI can trip on the compressor's startup surge and quietly defrost. The answer is not removing the protection, which the code usually requires, but a dedicated circuit and a good quality modern device — older GFCIs are much more prone to it. Some people add an audible alarm or a plug-in monitor as a backstop, which is a reasonable precaution for anything in a garage you are not looking at daily.
How often should GFCI outlets be tested?
Monthly, using the device's own TEST button rather than a plug-in tester. Since the 2015 UL standard GFCIs are self-testing, and some will not respond to an external tester the way older ones did, which does not mean they are faulty. If pressing TEST does not cut the power, the device has failed and must be replaced — that is the entire point of the test. Reset afterwards and check that whatever was plugged in came back on.
How long do GFCI outlets last?
Ten to fifteen years, and less outdoors or anywhere damp. They are an electromechanical device with a finite life, which is why the monthly test exists. A GFCI that trips occasionally with nothing obviously wrong, or that feels loose when a plug goes in, is worth replacing rather than living with — the device is $28 and it is doing a job you will never notice it doing until the day it matters.
Should I use a GFCI breaker instead of a GFCI outlet?
Sometimes. A GFCI breaker protects the whole circuit from the panel and costs $50 to $100 for the device against $28 for a receptacle. It is the better answer when the first outlet on a run is somewhere awkward to reach for a reset, when you want everything on the circuit covered without depending on the LOAD wiring being right, or on a circuit feeding fixed equipment with no receptacle to put a device in. The trade-off is that resetting it means a trip to the panel.
Can I install a GFCI outlet myself?
A like-for-like swap on a circuit you have proved dead with a tester is within reach for a confident DIYer, and the device is $28. Three things argue for paying somebody: getting LINE and LOAD the right way round, which is the commonest error and produces a device that looks like it works and protects nothing; an ungrounded circuit, common before the mid-1960s, where a GFCI may be permitted but must be labeled "No Equipment Ground" under specific conditions; and aluminum wiring, which needs CO/ALR-rated devices and real care. If the conductors look silver rather than copper, stop.
Where these numbers come from
Nothing here is copied from a contractor directory. Labor is priced from what the trades are actually paid, materials from published producer prices, and both are adjusted to your area using federal cost-of-living data.
- Electrical contractors, United States: $43.61/hour, August 2026 (BLS CES CES2023821003)
- GFCI receptacle and plate: $28.00 per outlet (price recorded October 2026, not index-adjusted)