The cost to wire a garage is usually $1,500-$8,000, with a typical project averaging about $4,000 for a standard one- or two-car garage. Price depends on garage size, distance from the home’s electrical panel, required circuits, finished-wall access, and whether the existing panel has capacity.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Basic attached garage wiring | $1,000 | $2,500 | $4,500 | Existing panel has room; limited outlets and lighting |
| Detached garage wiring | $2,000 | $4,500 | $9,000 | Includes underground feeder in many standard jobs |
| Two-car garage, finished scope | $2,500 | $5,000 | $10,000 | More outlets, lights, and wall fishing |
| New subpanel | $500 | $1,200 | $2,500 | Price varies by amperage and feeder work |
| Electrical service upgrade | $2,000 | $4,000 | $7,500 | May be needed when the home panel is full |
What a typical garage wiring project costs
For a basic attached garage, electricians commonly charge $1,000-$4,500 to install several general-purpose outlets, a lighting circuit, switches, and code-required protection. A two-car garage with more outlets and multiple lighting zones often falls between $2,500 and $7,000. Detached buildings tend to cost more because power must travel from the house, sometimes through a trench.
A practical planning range is $1,500-$8,000 for a complete standard garage, before major panel or service upgrades. A simple installation in an unfinished garage with a nearby panel can land near the low end. Finished walls, long wiring runs, premium fixtures, or a new subpanel push estimates higher.
As a rough unit measure, new wiring and device installation may run about $8-$18 per square foot when priced as a broad project allowance, but this is not a reliable standalone rate. The number of circuits and outlets, access conditions, and feeder requirements matter more than floor area alone. For a 400-square-foot garage, the square-foot method suggests $3,200-$7,200, but a contractor should price the actual scope.
Assumptions: U.S. national planning ranges, standard-grade materials, licensed electrical contractor, ordinary access, and no extensive structural repair.
How wire, outlets, and feeder work appear on quotes
A quote may group materials and labor together or list each task separately. The table below shows common allowances for a typical garage project; these items are not necessarily all charged as separate line items. Costs vary with local labor rates, wire route, and the number of devices.
| Quote item | Typical price | Unit or scope | What changes the price |
|---|---|---|---|
| Cable, conduit, boxes, and fittings | $250-$1,000 | One-car to two-car scope | Copper size, conduit type, run length |
| Outlets and switches | $25-$100 | Per device installed | GFCI protection, weatherproof cover, wall access |
| Lighting and controls | $150-$1,200 | Per fixture or grouped layout | Fixture quality, ceiling height, switching zones |
| Dedicated circuit | $250-$800 | Per circuit | Amperage, distance, equipment served |
| Subpanel and feeder | $700-$2,500 | Common garage installation | Panel capacity, feeder gauge, route length |
| Trenching and restoration | $10-$30 | Per linear foot | Depth, soil, pavement, utility conflicts |
Feeder distance and underground work are often the largest quote differences between otherwise similar garages. A short run through accessible framing can be relatively straightforward. A detached garage may need conduit, a buried feeder, trenching, and surface restoration, in addition to the circuits inside.
Confirm whether the estimate includes permit fees, inspection coordination, patching, and disposal. Electricians may exclude drywall repair and painting even when they make access openings. Ask whether listed fixture allowances cover the actual lights or only installation labor.
Panel capacity and 50-foot runs can change the estimate
The most consequential price drivers are electrical capacity, route length, and construction access. If the home’s panel has open breaker spaces and adequate capacity, the garage may not need a new panel. If it is full or the electrical load calculation does not support added demand, a subpanel or service upgrade may be necessary.
Distance affects wire size, labor, and sometimes voltage-drop planning. A run under 25 feet through an attached garage wall can be simple; a 75- to 100-foot route to a detached building requires more cable and may call for a larger feeder. Underground work can add trenching and restoration charges, especially beneath a driveway or patio.
Ask for the feeder length and amp rating in writing, rather than accepting a vague allowance for “power to garage.” A 60-amp subpanel may suit general lighting and outlets, while a garage with an EV charger, compressor, or workshop equipment may need a load assessment and a larger design. Actual requirements depend on simultaneous loads and local code.
Finished walls can add $500-$2,000 or more if the electrician must fish wires through limited openings, open drywall, or work around insulation. In an unfinished garage with exposed studs, wiring is usually easier to route and inspect. Concrete block walls, high ceilings, fire-rated separations, and inaccessible attic spaces can also increase labor.
Other scope changes include the number of outlets, exterior receptacles, motion sensors, dedicated circuits, and lighting controls. A basic layout might have four to six outlets and two light fixtures; a workshop layout could require eight or more receptacles, task lighting, and separate circuits for equipment.
Outlet count, EV charging, and lighting set the circuit scope
A garage used mainly for parking needs a different design from one used as a workshop. General outlets and lights are a modest electrical load, but a 240-volt welder, air compressor, heater, or EV charger can require dedicated wiring and capacity checks. Adding such equipment during the original project is often less disruptive than installing it later, though it may raise the initial price.
A 240-volt circuit for equipment can cost about $400-$1,500 when the panel is nearby and the route is accessible. An EV charger circuit commonly costs $500-$2,000 for wiring and installation, excluding the charging unit; longer runs, a panel upgrade, or trenching can bring the total above $3,000. The electrician should verify charger amperage and the home’s available electrical capacity.
Price the garage around the equipment it will actually run, not an assumed future load. Installing unused high-capacity circuits can waste money, but omitting a planned charger or workshop circuit may lead to repeat labor and wall repairs. Provide equipment nameplates or model numbers when requesting quotes.
Lighting costs depend on fixture type, mounting height, and control layout. Basic LED fixtures may add $50-$200 each for supply and installation, while high-output shop lights or multiple switching zones can raise the allowance. Exterior lights and weather-resistant receptacles usually cost more than standard indoor devices because of protective housings and installation details.
Electrician hours and permit costs vary by garage layout
A straightforward attached-garage installation may take one electrician about 8-16 hours, while a larger two-car project can require 16-32 labor hours. A detached garage with a long feeder, trenching, or a subpanel may take two workers one or two days, with additional time for inspection or utility coordination.
Electrician rates commonly range from $75-$150 per hour in the U.S.; higher-cost metro areas and emergency scheduling can exceed that. Labor totals are not calculated simply by multiplying every crew member’s hours by the posted rate, since estimates may include setup, travel, materials handling, and business overhead.
Permits and inspections commonly add $50-$500, depending on jurisdiction and project scope. Some places charge a flat electrical permit fee, while others base fees on circuit count or project valuation. A service upgrade may require utility coordination and separate inspections. The contractor should identify who applies for the permit and whether the fee is included in the quote.
Do not compare labor totals without comparing the same circuit count, feeder route, device quality, and permit scope. Ask whether the price includes testing, labeling breakers, and correcting inspection issues related to the new work. Permit requirements differ by municipality, so local confirmation is essential.
Regional labor rates shift garage wiring prices
Labor costs are often higher in dense metro areas and coastal markets than in many smaller towns, though material prices and contractor availability also matter. Compared with a national midpoint estimate, a major Northeast or West Coast metro may be 15%-30% higher. A lower-cost rural market may be 10%-20% below the midpoint, but long travel distances can offset some savings.
Detached garages in colder regions can cost more when frozen ground, snow, or seasonal scheduling complicates trenching. In warm-climate areas, trenching may be easier in some seasons, but rocky soil, tree roots, concrete, and irrigation lines can still add expense. Local code amendments and permit fees can also affect totals independent of labor.
Use local quotes to calibrate the national ranges, especially for underground feeders and panel work. A price that seems high may include trench restoration, a permit, or a load calculation omitted from a competing estimate. Request a written scope before judging the total.
Three garage wiring quotes with different scopes
The following examples show how size and access can produce different totals. They assume ordinary materials and licensed work, but actual quotes depend on local rates, code requirements, and the building’s existing electrical system.
| Example | Specifications | Labor and unit detail | Estimated total |
|---|---|---|---|
| Attached one-car garage | 240 sq ft, six outlets, two LED fixtures, panel 15 ft away | 10-14 hours; about $10-$15 per sq ft | $2,400-$3,600 |
| Detached two-car garage | 480 sq ft, eight outlets, four lights, 60-amp subpanel, 40-ft feeder | 20-30 hours; trench allowance $400-$1,200 | $5,000-$8,500 |
| Workshop with EV circuit | 600 sq ft, finished walls, subpanel, 50-amp charger circuit, task lights | 28-40 hours; circuit and wall access increase labor | $7,500-$12,000 |
The first example assumes an accessible route and no panel upgrade. The detached example includes a moderate feeder run and ordinary soil, but a driveway crossing or longer distance can add substantially. The workshop estimate excludes the EV charger itself and assumes the main service can support the added load.
Use the examples as scope comparisons, not fixed bids. A quote should state the outlet and fixture count, circuit ratings, cable or conduit route, panel work, trench length, and exclusions. If an estimate is much lower, check whether it omits the subpanel, permit, or surface repair.
Lower the garage wiring bill through controlled scope
Provide a precise device plan before work begins. Mark intended outlet locations, light zones, and equipment connections, then ask the electrician to identify code-required items separately from optional upgrades. This reduces change orders and prevents paying for extra devices that are unlikely to be used.
Where practical, schedule wiring while the garage is unfinished or during a renovation. Open framing can reduce wire-fishing and patching time. If the walls are already finished, ask whether a surface-mounted conduit installation is a safe, code-compliant alternative to opening large areas; the best method depends on the garage’s construction and appearance requirements.
Compare at least three itemized estimates with the same layout and equipment list. Look for differences in feeder size, circuit count, permit handling, fixture allowances, and repair work. A lower total may reflect a narrower scope rather than lower labor pricing.
Choose standard LED fixtures and durable, ordinary-grade devices unless a specific feature is needed. Avoid adding a service upgrade based only on a contractor’s informal guess; request a load calculation and panel assessment. Conversely, do not remove a dedicated circuit that is required by planned equipment just to reduce the bid, since retrofitting may cost more later.
Bundling garage wiring with other permitted electrical work can sometimes reduce repeated mobilization charges. Confirm whether the contractor offers a lower combined price and whether the schedule allows both jobs to be completed together. Keep trenching, drywall repair, and painting distinct in the estimate so the cost of each decision is visible.