GFCI and AFCI Requirements by Location: 2023 NEC Residential Reference

The 2023 NEC is adopted in most states now, and the 2026 NEC is moving through the adoption cycle with its own changes. Each cycle expands GFCI and AFCI requirements. If you’re working from memory on where protection is required, you’re working from a mix of code editions and probably missing locations that have been added in the last two cycles. This is a location-by-location reference for residential GFCI and AFCI requirements under the 2023 NEC, with the 2026 NEC changes called out where they differ.

GFCI Requirements: NEC 210.8(A) (Residential, 2023)

GFCI protection is required for all 125V through 250V, 15A and 20A receptacles in the following locations in dwelling units under NEC 210.8(A):

• Bathrooms: All receptacles. No exceptions for receptacles near the door vs. near the sink; the entire bathroom is required.
• Garages: All receptacles at or below grade level. Includes attached garages and detached garages with conditioned space. The exception for a dedicated receptacle serving a garage door opener that is not readily accessible (mounted on the ceiling) was removed in the 2020 NEC — those receptacles now require GFCI.
• Outdoors: All receptacles accessible at or below grade level and at any grade level outside. This includes front porch receptacles and deck receptacles regardless of height above grade.
• Crawlspaces: Receptacles at or below grade level.
• Unfinished basements: All receptacles except a single dedicated receptacle for a sump pump and receptacles for fire alarm systems that are not readily accessible.
• Kitchens: All receptacles that serve the countertop surfaces. The 2023 NEC 210.8(A)(6) expanded this to include 125–250V receptacles for ranges, wall ovens, counter-mounted cooking units, clothes dryers, and microwaves.
• Dishwasher circuits: GFCI required per 210.8(D) for dishwasher branch circuits.
• Boat hoists and boathouses: Covered under 553 for floating buildings and marinas separately.
• Laundry areas: Laundry area receptacles; not limited to the specific circuit, all receptacles in the laundry area.
• Indoor damp / wet locations: All receptacles in areas where the location is subject to splash or spray.
• Within 6 ft of a sink: Bathrooms already covered above; 210.8(A)(7) extends this to other sinks — utility sinks, bar sinks, wet bars.

See also: conduit fill calculations under NEC for the conductor routing decisions that go alongside protection device selection.

AFCI Requirements: NEC 210.12 (Residential, 2023)

Arc Fault Circuit Interrupter (AFCI) protection is required for all 120V, single-phase, 15A and 20A branch circuits that supply outlets or devices in the following areas of a dwelling unit:

• Kitchens
• Family rooms
• Dining rooms
• Living rooms
• Parlors, libraries, dens
• Bedrooms
• Sunrooms
• Recreation rooms
• Closets
• Hallways
• Laundry areas
• Similar rooms and areas

The practical implication: every 15A and 20A general-purpose circuit in a residential new construction under the 2023 NEC requires AFCI protection. The only exceptions remaining are bathroom circuits (GFCI is required there; AFCI is not because bathroom circuits are dedicated), outdoor circuits, and circuits for smoke and CO alarms.

Location-by-Location Quick Reference

The following table shows protection requirements by room for new residential construction under the 2023 NEC. “AFCI” means an AFCI circuit breaker or equivalent AFCI protection device. “GFCI” means the outlet or receptacle has GFCI protection (breaker, receptacle, or outlet device). Combination AFCI/GFCI breakers satisfy both requirements simultaneously.

• Bedroom: AFCI required. GFCI not required except for receptacles within 6 ft of any wet area.
• Living room / family room / den: AFCI required. GFCI not required.
• Kitchen countertop receptacles: AFCI required (2023 expansion). GFCI required.
• Kitchen appliance circuits (range, dishwasher, microwave): GFCI required per 210.8(A)(6)/(D). AFCI not explicitly required for ranges/dryers in 2023 but check AHJ interpretation.
• Bathroom: GFCI required. AFCI not required under 2023 NEC.
• Garage (at/below grade): GFCI required. AFCI generally not required for the garage circuit, though some jurisdictions require it.
• Outdoor receptacles: GFCI required. AFCI not required.
• Unfinished basement: GFCI required. AFCI required for basement circuits that supply finished areas or circuits defined as bedroom/living area use.
• Laundry area: AFCI required (2023 expansion). GFCI required for receptacles.
• Hallway: AFCI required.
• Closet: AFCI required.

AFCI Compliance Methods Under NEC 210.12(A)

NEC 210.12(A) allows three methods to provide AFCI protection:

1. Combination-type AFCI circuit breaker: Installed at the origin of the branch circuit, protects the entire circuit including the wiring in the walls. This is the most common method in new construction.
2. Branch/feeder-type AFCI at the panel plus AFCI outlet device at the first outlet: Less common, used when panel space or cost constraints favor splitting the protection. The branch/feeder-type breaker doesn’t detect arcs in the branch circuit wiring; the AFCI outlet device at the first outlet covers the wiring beyond that point.
3. Listed AFCI outlet device at the first outlet on the branch circuit: When the wiring between the panel and the first outlet is conduit-enclosed metal raceway (reduced arc risk), an AFCI outlet device at the first outlet satisfies the requirement. Applies in renovation scenarios where installing a new AFCI breaker at the existing panel isn’t practical.

Renovation and Addition Work: Applying the Correct Code

For renovation and addition work, the applicable code edition is the one in effect when the permit is issued in your jurisdiction. If the jurisdiction adopted the 2023 NEC, all new circuits and extended circuits in covered locations require AFCI protection even if the rest of the home predates AFCI requirements.

NEC 210.12(D) specifically addresses existing dwelling modifications: when you add receptacles to an existing circuit in an AFCI-required location and the circuit lacks AFCI protection, you must provide AFCI protection at the first outlet of the extended branch circuit or replace the breaker with an AFCI breaker.

Use the voltage drop calculator for the conductor sizing part of new branch circuit design; the GFCI and AFCI requirements determined above govern the protection device selection at the panel and outlets.