New Construction Electrical Cost Per Square Foot (2026)

Quick answer

New construction electrical costs $10.34 per square foot on the only national builder survey that reports it. NAHB's Cost of Constructing a Home, published January 20 2025 from 2024 builds, puts electrical (excluding light fixtures) at $27,383 on an average 2,647 square foot house, which is 6.4% of total construction cost. Add the $5,392 lighting line and it is $12.38 per square foot. Homeowner cost guides quote a lower $4 to $9 per square foot because they price the wiring work alone, not the service, panel, permits and low voltage a builder pays for. On the wire itself, a 1,500 square foot house takes roughly 2,800 feet of NM-B cable, or about 1.9 feet per square foot of floor area.

Run the load calculation for your house →

Three tools do most of this job: the electrical load calculator to size the service, the wire size calculator to settle each circuit, and the electrician rate calculator to turn a labor estimate into money.

New construction electrical cost per square foot (checked November 2026)

Every row names its source and the date that source carries. The NAHB row is a survey of what builders paid. The contractor rows are typical quoted ranges from named cost guides, which is a different measurement, and they are labelled that way on purpose. The wire prices are retail listings read on November 4 2026.

One warning about the NAHB figure before you budget with it. Its sample averages 2,647 square feet on a $665,298 sales price, which is a bigger and more expensive house than the national median. If your build is smaller or plainer, the dollar total drops, but the cost per square foot usually goes the other way, for reasons the next few sections work through.

How much wire for a 1500 sq ft house? (animated)

Seven house sizes, cable split by size. Notice the slope of the right-hand figure: feet per square foot falls from 2.19 at 1,000 square feet to 1.59 at 3,000. Small houses carry the same kitchen, the same laundry and the same three heavy appliance runs as big ones, spread over less floor.

How much wire does a 1,500 sq ft house need?

A 1,500 square foot single story house needs about 2,800 feet of NM-B cable, split roughly 1,350 feet of 12-2, 1,050 feet of 14-2, 270 feet of 14-3 and 160 feet of heavier cable for the range, dryer and water heater. That works out to 1.9 feet of cable per square foot of floor area. At the Home Depot prices listed on November 4 2026 the copper alone is about $2,000 cut to length, or $3,400 if you buy whole rolls and eat the leftovers.

That number is not a guess and it is not a rule of thumb borrowed from somebody's forum post. I built it from the code requirements that decide how many boxes go in a house, then put cable between them. Here is the whole method, so you can argue with it or adapt it to your own plan.

1. Count the wall space. NEC 210.52(A)(1) says no point along the floor line of any wall space may be more than 6 feet from a receptacle, which means 12 feet between receptacles. Model a 1,500 square foot house as six habitable rooms covering 75% of the floor area and the room perimeters add up to about 329 feet of wall, so 28 general receptacles.
2. Add the receptacles the code names directly. Kitchen countertops under 210.52(C), where no point along the counter wall may be more than 24 inches from a receptacle. One within 3 feet of each bathroom basin under 210.52(D). Front and back outdoors under 210.52(E). Laundry under 210.52(F), one per vehicle space in the garage under 210.52(G), and one in any hallway 10 feet or longer under 210.52(H). That brings the receptacle count to 41.
3. Add lighting outlets and switches. NEC 210.70(A) wants at least one wall-switched lighting outlet in every habitable room, every bathroom, hallways, stairways, the attached garage and the outdoor entrances. That is a floor, not a plan: a real 1,500 square foot house lands near 34 lighting outlets once the kitchen gets recessed cans, with 21 single pole switches and 8 three-way pairs.
4. Add the smoke and carbon monoxide alarms. These come from the IRC, not the NEC. IRC R314.3 wants one in each sleeping room, one outside each separate sleeping area and one on each story, so four on a three bedroom single story, interconnected with 14-3.
5. Allow cable per box, then add the home runs. Electricians on the Mike Holt forum use about 15 feet of cable per device box, which covers the run to the next box plus the drop and the slack at each end. The panel sits in a corner, so the average home run on a 45 by 34 foot footprint is about 56 feet once you add the climb into the attic and 10% for routing.

Total: 108 boxes at 15 feet, plus 20 circuits at 56 feet. That is 2,829 feet. The electricians in that same forum thread quote between 1.2 and 2.1 feet of cable per square foot from real jobs, and one poster's figure for a 2,000 square foot house works out to exactly 2.0, so the model lands where practice lands. If anything it is on the lean side for a modern open-plan house with a lot of cans.

If you want to sanity check a specific circuit instead of the whole house, the wire size calculator handles the gauge and the wire weight calculator tells you what a reel of it weighs before you order it.

How many feet of wire by house size

Same model, seven house sizes. The one to two story split matters: a two story house has a shorter run across each floor but adds a vertical climb to every home run, and the two effects nearly cancel.

Boxes, circuits and footage computed for this article from the NEC sections named above. Cable cost uses Home Depot listed prices read on November 4 2026 at the cheapest available roll size, with no waste allowance. Buy whole rolls and the 1,500 square foot figure goes from $1,998 to $3,396, almost all of it leftover 10-2, 10-3 and 6-3 you bought a 125 or 250 foot roll of to run 40 feet.

Why the cost guides say $4 to $9 and the builder survey says $10.34

This gap confuses people, and the resolution is not that one side is lying. The two figures measure different things.

NAHB counts the whole electrical subcontract. Its line reads "Electrical (except fixtures)" and it sits in the major systems rough-ins group alongside plumbing at $27,180 and HVAC at $26,938, three trades that come out within $450 of each other. A builder's electrical subcontract covers the service entrance, the meter base, the panel and every breaker in it, the grounding electrode system, every branch circuit, every device, the exterior receptacles and lighting, the low voltage rough for data and television, the smoke and carbon monoxide system, and the electrician's share of the permits and inspection visits. It is the number a builder writes a check for.

The cost guides price the wiring work a homeowner asks about. When HomeGuide quotes $4 to $9 per square foot split as $2 to $4 materials and $2 to $5 labor, it is pricing cable, boxes, devices and the labor to install them. The service, the panel upgrade and the permit are priced separately on the same page, at $850 to $2,500 for a panel and $50 to $350 plus for a permit. Add those back and the gap narrows a lot.

The sample is different too. NAHB's 2024 respondents averaged 2,647 square feet on a $665,298 sales price. The Census Bureau puts the median new single family house completed in 2025 at 2,142 square feet. NAHB is describing a somewhat larger, somewhat better finished house than the median, and better finished shows up fastest in electrical: more cans, more switch legs, more dedicated circuits, more exterior lighting.

So use them for different jobs. If you are a builder benchmarking a bid, $10.34 per square foot plus $2.04 for fixtures is the number to compare against. If you are a homeowner asking an electrician what the wiring will cost, $4 to $9 per square foot is the right starting range, with the service and panel quoted on top.

Cost per square foot by house size, three ways

The same three anchors applied across house sizes. None of these is a quote. They are what each published figure implies if you simply multiply, which is exactly what a cost per square foot calculator does under the hood.

Straight multiplication of a published per square foot figure. Real electrical cost does not scale cleanly with floor area, because the service, panel, meter, grounding and permits cost the same on a 1,200 square foot house as on a 2,500 square foot one. That is why the small-house rows in the right-hand column are the most expensive per square foot and the large-house rows the cheapest, and why a per square foot multiplier always overprices a big simple house and underprices a small complicated one.

What a 1,500 sq ft take-off looks like, cable by cable

The shopping list for the house in the model, with both pricing scenarios. Cut to length is what you would pay at a counter that sells by the foot. Whole rolls is what you would pay buying the standard pack sizes off the shelf.

Two things jump out of that table. The first is that the four heavy cables are 161 feet out of 2,829, about 6% of the length, and $1,479 out of $3,396 in the whole-roll column, about 44% of the money. Buying 6-3 by the foot instead of by the 125 foot roll is the single biggest saving available to a homeowner doing their own material purchase.

The second is that 12-2 and 14-2 together are 85% of the footage. If your jurisdiction or your electrician runs 12-2 for lighting as well as receptacles, which some do for voltage drop headroom on long runs, swap the 1,050 feet of 14-2 for 12-2 and the cut-to-length total moves from $1,998 to $2,238. Whether that is worth $240 depends on run length, and the voltage drop calculator answers it in about ten seconds.

Retail listings are the ceiling, not the floor. An electrician buying on a supply house account pays less than the Home Depot shelf price, and wire prices move with copper, which closed at $6.35 per pound on COMEX on November 3 2026. A 20% move in copper is a real move in the wire line of your budget.

How many circuits does a new house need?

Circuit count drives home run count, which drives a surprising share of the footage, so it is worth doing properly rather than guessing. The code gives you a floor in two pieces.

General lighting and receptacle circuits come from a volt-amp per square foot figure. Under NEC 2023 that is 3 VA per square foot in Section 220.41. Under the 2020 edition it was 220.14(J), and in 2017 and earlier it lived in the dwelling row of Table 220.12. Same 3 VA, three different section numbers, which is why quoting the number without the edition is useless.

Specific circuits come from 210.11(C): at least two 20 amp small appliance branch circuits for the kitchen, pantry and dining area, at least one 20 amp laundry circuit with no other outlets, at least one 20 amp bathroom circuit, and at least one 20 amp circuit for the garage receptacles. That is five before you have powered a single light.

Worked for 1,500 square feet under NEC 2023: 1,500 x 3 VA = 4,500 VA. Divide by 120 V x 15 A = 1,800 VA and you get 2.5, so three 15 amp circuits. Divide by 120 V x 20 A = 2,400 VA and you get 1.875, so two 20 amp circuits. Add the five from 210.11(C) and the code minimum is eight general purpose circuits.

Nobody builds to that. A real 1,500 square foot house lands near 20 circuits once you add the dedicated runs almost every build has: range, dryer, water heater, dishwasher, disposal, microwave, refrigerator, furnace or air handler, and the outdoor condenser. The breaker size calculator settles each of those, and how to size a breaker walks the rules. If you are trying to work out how many outlets you can put on one circuit before adding another, that question has its own article.

Does the 2026 NEC change the answer?

Yes, and in a direction nobody expected. The 2026 edition moved the whole of Article 220 into a new Article 120, so the dwelling unit calculation that was Section 220.41 in 2023 is now Section 120.41. More importantly, the general lighting and receptacle load for feeder and service calculations dropped from 3 VA per square foot to 2 VA per square foot. For a 1,500 square foot house that is 4,500 VA down to 3,000 VA in the service calculation.

The branch circuit count did not follow it down. New Section 120.13 still counts minimum branch circuits at 3 VA per square foot via 120.5(C), so the number of general purpose circuits you must provide is unchanged. The 2 VA figure only makes the calculated service load smaller. Writing in EC&M in May 2026, NFPA electrical specialist Dean Austin worked a 5,000 square foot example where the minimum calculated load falls from 62.5 A to 42 A between the two editions.

None of this lowers the floor on the service itself. Section 230.79(C) still requires the service disconnecting means for a one family dwelling to be rated at least 100 amperes, 3 wire, in both editions. Our companion article on how many amps a 1,500 square foot house needs runs the full calculation; the electrical load calculator does it with your own appliance list.

General lighting and receptacle load only. This is one line of the service calculation, not the service size: the range, dryer, water heater, HVAC and the two small appliance circuits all get added on top before any demand factor is applied.

Which NEC edition applies to your build?

This matters more than usual right now, because the country is split three ways while the 2026 edition rolls out. Two independent adoption trackers read on November 4 2026 put roughly 8 to 10 states on the 2026 NEC, 18 to 20 states on 2023, 11 to 14 states on 2020, a handful on 2017 or older, and 5 or 6 states with no statewide electrical code at all, leaving adoption to cities and counties. The two trackers disagree by a state or two in each bucket, which is normal: adoptions land on different effective dates and the lists update at different speeds.

What that means in practice: ask your inspector which edition they are enforcing before you plan circuits, and never assume the newest rule applies. A 2 VA per square foot service calculation submitted in a 2020 NEC jurisdiction will come back marked up.

The parts of this article that decide wire footage, which is 210.52 receptacle spacing, 210.70 lighting outlets and 210.11(C) required circuits, are stable across 2020, 2023 and 2026. The part that moved is the load calculation, and that is the part to check locally.

What pushes electrical cost per square foot up

From the same data, in rough order of how much they move the number on a normal house.

• Small floor area. The service, panel, meter base, grounding electrode system, permit and inspections cost the same on a 1,100 square foot house as on a 2,600 square foot one. Spread over less floor, they push the per square foot figure up. This is the single biggest reason a cost per square foot multiplier misleads at the small end.
• Recessed lighting count. Every can is a box, a length of 14-2 and a few minutes of labor. A kitchen with 10 cans instead of 2 surface fixtures adds 8 boxes and over 100 feet of cable by itself. Electricians on the Mike Holt forum peg the difference between a plain older-style house and a modern one with open foyers and a lot of cans at roughly 1.0 against 1.5 feet of 14-2 per square foot, which is a 50% swing on the biggest line.
• All-electric against gas. A gas range, gas dryer and gas water heater remove the 6-3, the 10-3 and the 10-2 from the take-off, roughly $270 of cable cut to length and three breakers, and they shrink the calculated service load enough to matter on a 100 amp panel.
• Ceiling height and stories. Nine and ten foot ceilings add vertical feet to every drop. A second story adds a climb to every home run. Neither is dramatic on its own and together they are worth maybe 10% of footage.
• EV charger, solar, heat pump, generator interlock. Each is a dedicated circuit, often a heavy one, and the EV circuit in particular is becoming standard rough-in. A 60 amp EV circuit in 6-3 across a 1,500 square foot house is another 40 to 60 feet of the most expensive cable in the building.
• Labor market. The BLS puts the electrician median at $30.38 an hour on May 2025 data, with employment growing 9% from 2025 to 2035, much faster than average. Billed rough-in rates run $50 to $130 an hour. In a tight market the labor half of your per square foot figure is the half that moves.

Two cost lines sit just outside this article and both can dwarf the wiring. Getting power to the lot in the first place is covered in cost to connect electricity to a new house, and adding a single heavy circuit later costs far more than running it during rough-in, as cost to run a 240V line sets out. If your plans include a shop or anything three phase, cost to get three phase power covers that case.

New construction electrical cost per square foot calculator: how to run it yourself

There is no single calculator that spits out a trustworthy electrical cost for a new house, and any page that claims one is multiplying your floor area by a number somebody guessed. What works is a four step estimate you can do in ten minutes with the figures above.

1. Start from floor area times a rate. Use $4 to $9 per square foot for the wiring work alone, or $10.34 per square foot if you want the full builder subcontract benchmark. For 1,500 square feet that is $6,000 to $13,500, or $15,518 on the NAHB rate.
2. Correct for size. Below about 1,400 square feet, move toward the top of the range because the fixed costs dominate. Above about 2,600, move toward the bottom.
3. Add or subtract the specifics. Count your recessed cans against a baseline of two fixtures per room and add roughly $120 to $200 per extra can installed. Subtract about $270 of cable plus three breakers if the range, dryer and water heater are gas. Add a dedicated circuit for each of EV charging, a hot tub, a workshop subpanel or a well pump.
4. Price the service separately. The panel is $850 to $2,500 and the permit $50 to $350 plus on the HomeGuide ranges. Getting power to the lot is a separate utility bill again, and that one can run from under $1,000 to well past $8,000.

Then check the answer from the other direction. Take the material cost from the cable table, roughly $2,000 for a 1,500 square foot house, and the labor. A two person crew roughing in 108 boxes and 20 circuits is typically four to six days, so 64 to 96 crew hours at a billed $50 to $130 an hour gives $3,200 to $12,500, with trim out on top. The electrician rate calculator lets you put your own local rate in. If the top-down and bottom-up numbers land in the same neighbourhood, your estimate is probably sound. If they do not, one of your assumptions is wrong and it is worth finding out which before you sign anything.

One last check worth doing on a long house: run the furthest circuit through the voltage drop calculator. The NEC's 3% branch circuit figure is a recommendation rather than a requirement, but a 100 foot 14 AWG run at 12 amps is already past it, and the fix is cheaper decided now than discovered later.

Five mistakes that cost real money on a new build

• Pricing the house per square foot and stopping there. The service, panel and permit do not scale with floor area, and a flat multiplier gets small houses badly wrong in the expensive direction.
• Not roughing in the circuits you will obviously want. Pulling a 6-3 to the garage during rough-in costs maybe $200 in cable. Adding it to a finished house, with drywall and a trench, is a job priced in thousands.
• Confusing the rough-in price with the finished price. Rough-in at $2 to $4 per square foot does not include devices, plates, fixtures or the trim out visit. Ask every quote which of those it contains.
• Buying wire by the roll for the short heavy runs. A 250 foot roll of 10-3 to run 42 feet is $400 for $67 of cable. Buy the big two sizes by the roll and the rest by the foot.
• Assuming the newest code edition applies. Roughly half the country is still on the 2020 or 2023 NEC. Design to the edition your inspector enforces, not the one the internet is discussing.

Tools for the rest of this job

Related reading: how many amps a 1,500 sq ft house needs, cost to run a 240V line, cost to connect electricity to a new house, the NEC wire size chart and knob and tube replacement cost if you are rewiring rather than building.

Frequently asked questions

Written by Munir Afridi. Reviewed against NEC 2023 Article 210 (210.11(C) required branch circuits, 210.52 receptacle outlets, 210.70 lighting outlets) and Article 230 (230.79(C) minimum one-family dwelling service), with the 2026 edition changes to Article 120 checked separately, on November 4 2026. More on how this site works is on the about page.

Safety and code note. This article references NEC 2023 and flags the 2026 changes where they apply. Many jurisdictions operate under earlier editions or local amendments: adoption trackers read on November 4 2026 show roughly 8 to 10 states on the 2026 NEC, 18 to 20 on 2023, 11 to 14 on 2020, a handful on 2017 or older and 5 or 6 states with no statewide code at all. Verify with your local authority having jurisdiction before you plan circuits or submit a load calculation. Cost figures are benchmarks for budgeting, not quotes, and the cable take-off here is a model, not a substitute for a take-off from your own plans. Electrical work carries safety and legal risk. Verify any calculations with a licensed electrician familiar with your local code before performing work.

Data sources: National Association of Home Builders, "Cost of Constructing a Home 2024", special study by Eric Lynch published January 20 2025 (average lot size 20,907 sq ft, average finished area 2,647 sq ft, total construction cost $428,215 at 64.4% of a $665,298 average sales price, major systems rough-ins $82,319 at 19.2%, plumbing $27,180, electrical except fixtures $27,383, HVAC $26,938, lighting $5,392 under interior finishes, building permit fees $7,640). NAHB Economics blog, September 8 2026, confirming the next edition of that survey was still collecting responses, so the 2024 edition is the latest published. US Census Bureau Characteristics of New Housing, 2025 data (median floor area of new single family houses completed, 2,142 sq ft). NEC section requirements cross-checked against two independent authority documents: the New York State Electrical Inspection Agency "2023 NEC Residential Requirements at a Glance" (posted October 2025) and the City of Saint Paul DSI residential dwelling unit rough-in checklist for the 2020 NEC, which agree on 210.52(A), 210.52(C), 210.52(D), 210.52(E), 210.52(H), 210.52(I), 210.70(A) and 210.11(C). 2026 NEC load calculation changes from Dean Austin, NFPA electrical specialist, "Changes to Dwelling Unit Calculations in the 2026 NEC", EC&M, published May 19 2026, cross-checked against a second independent reference giving the same 3 VA to 2 VA change and the same 220.41 to 120.41 renumbering. NEC adoption status from two independent trackers read November 4 2026, one dated as of November 1 2026 and one undated; they differ by a state or two per edition and both are reported as a range above. International Residential Code Section R314.3 for smoke alarm locations. US Bureau of Labor Statistics Occupational Outlook Handbook, Electricians, May 2025 median wage data ($30.38 per hour, $63,190 per year, 821,000 jobs, 9% growth 2025 to 2035), page modified August 27 2026. Cable prices from Home Depot product listings read November 4 2026 (Southwire 14-2 250 ft $125.00 and 1,000 ft $452.00; Southwire 12-2 250 ft $182.00 and 1,000 ft $646.00; Cerrowire 14-3 250 ft $165.00; Cerrowire 12-3 250 ft $230.00, against Southwire 12-3 250 ft at $366.54, a brand spread of 55 cents a foot on the same size; Southwire 10-2 250 ft $314.00; Southwire 10-3 250 ft $400.00; Southwire 6-3 125 ft $535.00). Copper at $6.35 per pound, COMEX HG futures quote dated November 3 2026. Contractor typical ranges, which are quoted ranges rather than averages, from HomeGuide's electrical wiring cost guide and HomeAdvisor's wiring and panel cost page, both checked November 4 2026 and neither carrying a stated review date. Practitioner cable-per-square-foot figures from an electricians' discussion thread on the Mike Holt forum, used as a sanity check on the computed model and labelled as practitioner reports rather than measured data. Box counts, circuit counts, cable footage and cable cost in every table were computed for this article from the NEC sections named above and the prices named here, and recalculated on November 4 2026.