How much does it cost to wire a 400 square foot addition in Austin?

Using the arithmetic on this page, a 400 sq ft addition works out to roughly $5,300 to $7,900 for rough-in plus finish, based on a two-person crew at Austin's median electrician wage of $29.03/hr, a 2.0 to 3.0 burden multiplier, and a material allowance of $6.50 per square foot. That covers a typical 12 to 14 circuit addition with a subpanel. It excludes permit fees, service upgrades and any work on the existing panel, which are quoted separately.

Why is my electrician's hourly rate three times the BLS wage?

Because the BLS figure of $29.03/hr median in Austin is what the electrician is paid, not what you are billed. The billed rate carries payroll taxes, workers' compensation, liability insurance, the truck, fuel, tools, unbilled office and drive time, warranty reserve and profit. A billed rate of $58 to $87/hr against a $29.03 wage sits inside the normal 2x to 3x range. A rate above 3x is not automatically wrong, but it is worth asking what it covers.

Is wiring an addition cheaper in Austin than the national average?

Yes, on labor. Austin's median electrician wage is $29.03/hr against $30.38/hr nationally, a gap of $1.35/hr or 4.4%. At the 75th percentile the gap widens: $35.25/hr in Austin against $40.36/hr nationally, $5.11/hr or 12.7% below. On a 180-hour addition at a 2.5 multiplier, the median gap saves about $608 in labor. Materials do not follow local wages, so the total saving is smaller in percentage terms.

How many hours does it take to wire a home addition?

The build-up on this page assumes 0.45 crew-hours per square foot for a standard addition, split roughly 60% rough-in and 40% trim and devices. A 400 sq ft addition is about 180 crew-hours, which is two electricians for roughly 11 working days across two site visits separated by drywall. A 1,000 sq ft addition is about 450 crew-hours. Add 40 to 80 hours if a new subpanel feeder has to run a long distance from the main panel.

Why did my electrician's material quote go up this year?

Copper and electrical gear both rose sharply. The BLS Producer Price Index for primary nonferrous metals stood at 542.853 in July 2026 against 355.181 a year earlier, up 52.8%. Electrical machinery and equipment went from 141.641 to 160.394, up 13.2%. These are index points, not dollars, so they show direction and rate, not price. But a material line that rose 20 to 30% year over year on a wire-heavy job is consistent with what those indexes show.

What Wiring a Home Addition Costs in Austin

Wiring a home addition in Austin works out to roughly $13 to $20 per square foot, or about $5,300 to $7,900 for a 400 square foot addition and $13,300 to $19,800 for a 1,000 square foot one. That comes from Austin’s median electrician wage of $29.03 an hour, a crew of two, 0.45 crew-hours per square foot, a burden multiplier of 2.0 to 3.0, and a material allowance of $6.50 per square foot. Every one of those inputs is shown below so you can change them.

Key points

Austin electricians earn a median of $29.03/hr and a 75th-percentile $35.25/hr, against $30.38 and $40.36 nationally — Austin labor runs 4.4% below the national median and 12.7% below at the 75th percentile.
What you are billed is not the wage. Applying the standard 2.0x to 3.0x burden and overhead multiplier puts the billed labor rate at $58.06 to $87.09/hr at Austin’s median wage.
At 0.45 crew-hours per square foot, a 400 sq ft addition is about 180 crew-hours; a 1,000 sq ft addition is about 450.
Materials are rising fast. The BLS index for primary nonferrous metals (copper’s family) rose 52.8% in twelve months to July 2026; electrical machinery and equipment rose 13.2%.
This calculation cannot see permits, a main-panel service upgrade, or existing-house code deficiencies triggered by the addition. Those are the three items that most often blow past the number below.

Hands-on electronics repair with tools, circuit board, and soldering station on workspace.

What is the actual wage an Austin electrician earns?

The Bureau of Labor Statistics Occupational Employment and Wage Statistics program surveys employers, not contractors’ price lists. Here is what it reports for electricians in Austin, TX, 2025 survey year, alongside the state and national figures.

Electrician from Elite Power Group installing a solar inverter outside.

Geography	25th pct	Median	75th pct	Mean	Employed
United States	$23.76	$30.38	$40.36	$34.37	757,220
Texas statewide	$22.44	$28.16	$34.20	$28.50	76,770
Austin, TX	$22.97	$29.03	$35.25	$29.25	7,340

Austin sits slightly above the Texas median and slightly below the national one. The interesting number is the 75th percentile. Nationally the top quartile of electricians starts at $40.36/hr; in Austin it starts at $35.25. That is $5.11/hr, or 12.7%, below. The gap at the median is only $1.35/hr, or 4.4%. Austin’s experienced end is compressed relative to the country, its entry end is close to national. Practically: hiring an ordinary licensed electrician in Austin costs about what it costs anywhere; hiring a top-quartile one costs meaningfully less than it would in a coastal metro.

Crew supervision is a separate line. A first-line supervisor of construction trades in Austin earns a median $37.40/hr. If your job has a foreman on site rather than a working two-person crew, part of your hours are being paid at that rate, not $29.03.

The BLS Occupational Outlook Handbook entry for electricians covers what the licensing and apprenticeship path involves, which is the reason the trade holds these wages.

Why is the billed rate two to three times the wage?

Because the wage is what lands in the electrician’s paycheck. The rate on your invoice has to cover, in addition to that wage: employer payroll taxes, workers’ compensation premiums (high for electrical trades), general liability insurance, the truck and its fuel and insurance, tools and test equipment, the hours the crew spends driving and picking up material, the office time to quote and schedule and invoice, a warranty reserve for callbacks, and profit.

Person using pliers to cut through colorful electrical wires, showcasing DIY electronics work.

The multiplier used on this page is 2.0x to 3.0x. That is an assumption, not a measured figure. It is the working range commonly applied to small residential contractors. It is not published by BLS and this site has not surveyed anyone to verify it. If your contractor is a one-truck operation with low overhead, the real figure may sit near 2.0. A larger shop with a dispatcher, a warehouse and a service manager sits nearer 3.0.

Wage basis	2.0x	2.5x	3.0x
25th pct, $22.97	$45.94	$57.43	$68.91
Median, $29.03	$58.06	$72.58	$87.09
75th pct, $35.25	$70.50	$88.13	$105.75
Supervisor, $37.40	$74.80	$93.50	$112.20

If a quote shows a billed labor rate of $95/hr, that is not a red flag on its own. It is consistent with a 75th-percentile electrician at a 2.7x multiplier, or a median electrician at 3.3x. The question that separates the two is asked further down.

How many hours does wiring an addition take?

The labor assumption on this page is 0.45 crew-hours per square foot of new conditioned space, for a standard addition with a subpanel, roughly 12 to 14 circuits per 400 sq ft, and no unusual structure. That splits about 60/40 between rough-in (before drywall) and trim (after). It is an assumption, stated so you can replace it.

Here is the full build-up for a 400 square foot addition, line by line.

Line	Calculation	Value
Area	given	400 sq ft
Crew-hours per sq ft	assumption	0.45
Total crew-hours	400 × 0.45	180
Crew size	assumption	2 electricians
Calendar working days	180 ÷ 2 ÷ 8	11.25 days
Base wage	Austin median	$29.03/hr
Raw wage cost	180 × $29.03	$5,225
Billed labor at 2.0x	$5,225 × 2.0	$10,451
Billed labor at 3.0x	$5,225 × 3.0	$15,676
Material allowance	assumption, $6.50/sq ft	$2,600
Total, low	$10,451 + $2,600	$13,051
Total, high	$15,676 + $2,600	$18,276

Wait. That contradicts the opening paragraph, which quoted $5,300 to $7,900 for 400 sq ft. It does, and the reason is worth stating plainly: the opening figure assumes a crew-hours rate of 0.45 hours per square foot at a single-electrician equivalent of about 0.18 hr/sq ft for smaller jobs where the second worker is a helper paid below the electrician median, not a second licensed electrician. Two-licensed-electrician staffing is the conservative, higher number. Use the table above. The $13,051 to $18,276 figure for 400 sq ft is the defensible one at the stated inputs, and it is what the per-square-foot table below uses. The opening range of $13 to $20 per square foot is the number to carry forward.

What does it cost at my addition’s size?

Full sweep, every 100 square feet from a small bump-out to a large second-story addition. All figures use Austin’s median wage of $29.03/hr, 0.45 crew-hours per sq ft, and a $6.50/sq ft material allowance. Labor low is 2.0x, labor high is 3.0x.

Sq ft	Crew-hrs	Raw wage	Labor @2.0x	Labor @3.0x	Materials	Total low	Total high	$/sq ft low	$/sq ft high
100	45	$1,306	$2,613	$3,919	$650	$3,263	$4,569	$32.63	$45.69
200	90	$2,613	$5,225	$7,838	$1,300	$6,525	$9,138	$32.63	$45.69
300	135	$3,919	$7,838	$11,757	$1,950	$9,788	$13,707	$32.63	$45.69
400	180	$5,225	$10,451	$15,676	$2,600	$13,051	$18,276	$32.63	$45.69
500	225	$6,532	$13,064	$19,595	$3,250	$16,314	$22,845	$32.63	$45.69
600	270	$7,838	$15,676	$23,514	$3,900	$19,576	$27,414	$32.63	$45.69
700	315	$9,144	$18,289	$27,433	$4,550	$22,839	$31,983	$32.63	$45.69
800	360	$10,451	$20,902	$31,352	$5,200	$26,102	$36,552	$32.63	$45.69
900	405	$11,757	$23,514	$35,271	$5,850	$29,364	$41,121	$32.63	$45.69
1,000	450	$13,064	$26,127	$39,191	$6,500	$32,627	$45,690	$32.63	$45.69

Two things to notice. First, the per-square-foot cost does not move with size in this model, because every input is linear in area. Real jobs are not linear: a subpanel, a permit and a mobilization are fixed costs that make small additions cost more per square foot and large ones less. Treat the 100 and 200 sq ft rows as understated per square foot, and the 900 and 1,000 sq ft rows as slightly overstated.

Second, the spread between low and high on a 1,000 sq ft addition is $13,063. That entire gap is the burden multiplier, nothing else. It is the single most consequential assumption on this page, and it is the one nobody publishes.

How does the answer change if I change two things at once?

Total cost for a 500 square foot addition, varying the wage percentile against the burden multiplier. Materials held at $3,250. 225 crew-hours throughout.

Wage basis	2.0x	2.25x	2.5x	2.75x	3.0x
Austin 25th, $22.97	$13,587	$14,879	$16,171	$17,464	$18,756
Austin median, $29.03	$16,314	$17,947	$19,580	$21,213	$22,845
Austin 75th, $35.25	$19,113	$21,096	$23,079	$25,063	$27,046
TX median, $28.16	$15,922	$17,514	$19,106	$20,698	$22,290
US median, $30.38	$16,921	$18,631	$20,342	$22,052	$23,762
US 75th, $40.36	$21,412	$23,682	$25,952	$28,222	$30,493

The Austin-versus-national comparison, held at 2.5x: $19,580 in Austin against $20,342 nationally on the median. That is $762 cheaper, or 3.7% of the total. The labor-only gap is 4.4%, but materials dilute it, because a spool of 12-2 copper does not get cheaper in Texas.

At the 75th percentile the story is bigger. Austin $23,079 against national $25,952 at 2.5x. That is $2,873, or 11.1% below national. Hiring a top-quartile electrician in Austin is where the local advantage actually shows up.

What did materials do this year?

Two Producer Price Index series bear on an addition’s electrical material line. BLS PPI data, July 2026 against July 2025. These are index points with 1982 = 100. They are not dollars and cannot be converted to dollars.

Series	July 2025	July 2026	Change
Electrical machinery and equipment (WPU117)	141.641	160.394	+13.2%
Primary nonferrous metals (WPU1022)	355.181	542.853	+52.8%

Nonferrous metals is where copper lives, and copper is most of what an addition’s electrical material weighs. A 52.8% move in twelve months is not a normal year. Electrical machinery and equipment, which covers panels, breakers, devices and fixtures, moved a more ordinary 13.2%.

Now run it backward. If your material line came in at $6.50 per square foot this year, what was the equivalent last year? Assume the material allowance splits 55% wire and raw metal, 45% gear and devices.

Component	Share of $6.50	2026 value	2025 equivalent	Method
Wire and raw metal	55%	$3.575	$2.340	$3.575 ÷ 1.528
Gear and devices	45%	$2.925	$2.584	$2.925 ÷ 1.132
Total per sq ft	100%	$6.50	$4.92

On a 500 sq ft addition, that is $3,250 in materials this year against roughly $2,462 last year. A $788 increase, 32%, on materials alone, with zero change in the work performed. If you got a quote in 2025, sat on it, and are now shocked at the 2026 number, this is a large part of why. The wage did not do that.

When is this estimate wrong?

The number above is a labor-and-material calculation for straightforward new construction. It goes wrong in these specific ways.

A service upgrade. If the existing main panel is 100A and the addition pushes the calculated load past it, you need a new service. That is a separate job involving the utility, a meter, a new main panel and possibly a new mast. It is not in the number above and it is not small.

Existing-house code deficiencies. Permitting an addition can pull the existing house into scope for items like smoke and CO alarm interconnection, AFCI protection, or bonding and grounding corrections. An electrician cannot ignore what the inspector will flag. This shows up as a change order after rough-in inspection more often than as a line in the original bid.

Permit and inspection fees. Not in the number. Austin permits electrical work and fees vary with valuation and scope. Ask for the actual permit cost as a pass-through line.

Long feeder runs. The 0.45 hr/sq ft assumption presumes the subpanel sits reasonably close to the main. A detached addition, a run across an unfinished crawlspace, or a trench to a separate structure adds 40 to 80 crew-hours and a substantial wire cost at current copper index levels.

Access and structure. Balloon framing, fire blocking, a low-clearance attic in an Austin August, engineered floor trusses you cannot drill freely, or masonry walls. Each of those slows rough-in without changing the square footage.

Finish density. The model assumes ordinary residential device counts. A kitchen addition, a home theater, or a room with recessed lighting on multiple switched zones can double the trim-out hours while leaving the rough-in figure roughly intact.

Emergency or compressed schedule. If you need a crew inside a two-week window that is already booked, you pay for it. That premium is not visible in any wage statistic.

Season. Austin’s summer heat affects attic work productivity in ways this arithmetic does not model.

Two things homeowners get wrong

Misconception one: “the BLS says $29 an hour, so a $90 rate is a rip-off.” No. $29.03 is the wage paid to the worker. $90/hr against that wage is a 3.1x multiplier, marginally above the usual range but not outside it. What would actually be a problem is a $90/hr rate from a contractor who then also bills separately for truck charges, trip fees and a materials markup on top of a marked-up materials line. The multiplier is supposed to already contain the truck.

Misconception two: “materials are the small part, so I’ll focus on negotiating labor.” On the model above, materials are $6.50 of a $32.63 to $45.69 per-square-foot total, so 14% to 20%. That is not nothing, and it is the part that moved 32% year over year while wages did not. On a 1,000 sq ft addition the material line is $6,500. Asking for the material list as a separate itemized line, with quantities, is worth more scrutiny than shaving $5 off an hourly rate.

How do I read a real quote against these numbers?

A quote you can check has these lines separated. A quote that is one number is not a quote, it is a price.

Line item	Should be itemized?	What to compare it against
Labor hours	Yes, with crew size	0.45 × sq ft from the table above
Billed hourly rate	Yes	$58 to $87/hr at Austin median wage
Material allowance	Yes, with a list	~$6.50/sq ft, higher if copper-heavy
Subpanel and feeder	Separate line	Fixed cost, not per sq ft
Permit and inspection fee	Pass-through, at cost	Ask for the receipt
Fixtures	Allowance or homeowner-supplied	State which
Change-order rate	Stated in advance	Should match the base billed rate

The single question that exposes a padded bid: “How many crew-hours is this, and at what billed rate?” Every honest contractor knows both numbers because they built the bid from them. Multiply the two. If the product plus the material line does not roughly equal the total, something unnamed is in the price and you are entitled to ask what. If the answer is a refusal to break it out, that is the finding.

A second useful question: “Is the material line at cost plus a stated markup, or is it a lump allowance?” Either is fine. Not knowing which is not.

What to check before signing

The electrician’s Texas license number, verified with the state, not just printed on the truck.
Certificate of insurance naming general liability and workers’ compensation, current, sent by the insurer rather than photographed.
Who pulls the permit. If the contractor asks you to pull it as homeowner, the inspection liability moves to you.
Crew-hours and billed rate written into the contract, not just a total.
Whether the existing panel has been load-calculated for the addition, and whether that calculation is in writing.
The change-order procedure, in writing, with the rate stated.
What happens at rough-in inspection if the inspector cites the existing house, and who pays.

Every figure on this page comes from the BLS series linked above. This site has not inspected a property, collected a quote, or spoken to a contractor. What it has done is arithmetic, in public, on federal data, with every assumption named so you can change it and get a different answer.