GFCI Outlet Installation Cost (and Why Code Requires It)

New GFCI outlet installation costs $130 to $350 per outlet, while replacing an existing standard outlet with a GFCI one — the more common job, since it reuses existing wiring — runs $90 to $200. The outlet itself typically costs $7 to $50, with the rest being labor. See our electrical repair cost guide for how this compares to other electrical work.

Cost by scope

Where code requires GFCI protection

The National Electrical Code requires ground-fault circuit interrupter protection in rooms where water and electricity are more likely to meet:

• Bathrooms
• Kitchens (countertop receptacles and any cord-connected appliance outlet)
• Garages
• Laundry and utility rooms
• Unfinished basements
• Crawl spaces
• Outdoor outlets
• Any receptacle within 6 feet of a sink

A GFCI outlet cuts power within milliseconds if it detects current leaking somewhere it shouldn't — like through a person — which is why code treats it as required safety equipment in these locations rather than an optional upgrade.

Retrofit vs. new construction

Retrofitting a GFCI into an existing standard outlet location is generally the cheaper path, since the wiring is already run and the electrician is simply swapping the device. New construction or adding an outlet where none existed can cost more if it requires running new wire back to the panel or a nearby circuit, and may involve permit costs that a simple swap wouldn't.

Bundling GFCI work with other electrical jobs

If you're already having an electrician out for panel work or an older-home wiring update, adding GFCI protection to code-required rooms at the same time is usually cheaper than a separate future visit — see Knob and Tube Wiring Replacement Cost if your home's age suggests other wiring updates may be due at the same time. For labor rate context, see Electrician Cost Per Hour: 2026 Rates Explained.

Prices on this page are researched ranges compiled from multiple public contractor-pricing sources, not quotes from us or a guarantee of what you will pay. Actual costs vary by region, material choice, and job complexity — always get itemized quotes from licensed local contractors before committing to a project. See How We Price for our sourcing methodology.

Frequently Asked Questions

Can I install a GFCI outlet myself?

It's a common DIY electrical project for someone comfortable working safely with the circuit breaker off, but if you're not confident identifying and correctly wiring the line and load connections, hire a licensed electrician — a miswired GFCI may not trip correctly, defeating its safety purpose.

How do I know if an outlet already has GFCI protection?

GFCI outlets have visible 'Test' and 'Reset' buttons on the outlet face. If your bathroom or kitchen outlet lacks these, it may still be protected by a GFCI breaker at the panel, or by an upstream GFCI outlet on the same circuit — a electrician or a plug-in circuit tester can confirm either way.

Do I need a GFCI outlet at every outlet in a required room?

No — a single GFCI outlet can protect other standard outlets 'downstream' on the same circuit if wired correctly, or a GFCI breaker at the panel can protect an entire circuit. You don't need to replace every outlet in a bathroom individually as long as the circuit is protected.

Why does my GFCI outlet keep tripping?

Frequent tripping usually means a genuine ground fault (often from moisture, an aging appliance, or a wiring issue) rather than a faulty outlet, though outlets can also wear out over years of use. If resetting doesn't hold, or it trips repeatedly, have an electrician diagnose the cause rather than continuing to reset it.