Home addition cost in Arizona
Statewide estimate from BLS wages and BEA prices. Reviewed Nov 4, 2026.
- Statewide range (300 sq ft)
- $36,200 – $73,400
- Per sq ft
- $119 – $238
- before permit
- Versus US midpoint
- −5%
- US $57,500
- Metros covered
- 6
Across Arizona, a home addition costs about $36,200 to $73,400 for 300 sq ft. Statewide, that midpoint is 5% below the US figure of $57,500. Carpenters earn a median $28.17 an hour in Arizona (US: $29.12).
Inside Arizona, the metros we cover range from $50,000 (Lake Havasu City) to $55,600 (Phoenix) at the midpoint. Pick your closest city in the table for a tighter number.
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Estimated cost for 300 sq ft in Arizona (statewide), standard level
$47,400 to $62,300
About $155 to $202 per sq ft before permits. Labor is about 66% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $14,900 | $19,500 |
| Labor | $31,500 | $41,300 |
| Permits and fees | $960 | $1,550 |
| Total | $47,400 | $62,300 |
Cost breakdown for 300 sq ft in Arizona
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,400 | $17,200 | $22,900 | 31% |
| Labor | $24,300 | $36,400 | $48,500 | 66% |
| Permits and fees | $500 | $1,250 | $2,000 | 2% |
| Total | $36,200 | $54,800 | $73,400 | 100% |
Arizona against its neighbors
Arizona ranks 29 of 51 (the 50 states plus DC) for home addition, where 1 is the most expensive. The costliest is Hawaii at $76,300 and the cheapest Arkansas at $48,200, both for 300 sq ft at the midpoint. Arizona sits at $54,800. The five states closest by workforce center are listed below.
| State | Distance | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Nevada | 340 miles away | $38,000 – $76,900 | $57,400 | +5% |
| New Mexico | 340 miles away | $36,000 – $72,900 | $54,500 | −1% |
| California | 430 miles away | $43,800 – $88,800 | $66,300 | +21% |
| Utah | 500 miles away | $35,000 – $71,100 | $53,000 | −3% |
| Colorado | 590 miles away | $38,400 – $77,800 | $58,100 | +6% |
When Arizona weather lets you build
Weather decides when digging and ground work can happen, and Arizona is not uniform. The table uses NOAA's 1991-2020 climate normals from the weather station nearest each metro we cover, and counts the months that are neither cold nor hot enough to complicate the job.
Phoenix has the longest comfortable season of the metros we cover in Arizona at 7 months (October through April); Flagstaff has the shortest at 5 (May through September). Rainfall runs from 3 inches a year in Yuma to 21 inches in Flagstaff.
We do not adjust prices by month, because we have no reliable published data on seasonal pricing. Timing is still worth raising when you collect bids.
| Metro | Jan avg low °F | Jul avg high °F | Precip (in/yr) | Comfortable months |
|---|---|---|---|---|
| Phoenix | 44 | 104 | 9 | 7: October through April |
| Tucson | 41 | 100 | 11 | 7: October through April |
| Prescott Valley | 26 | 90 | 13 | 7: March through June and August through October |
| Yuma | 48 | 107 | 3 | 6: November through April |
| Flagstaff | 18 | 82 | 21 | 5: May through September |
| Lake Havasu City | 43 | 109 | 4 | 7: October through April |
Other Arizona jobs that often go with home addition
Each project weights the trades differently, so Arizona's wage level does not push every price by the same amount. Compared with the US midpoint, detached garage is −4% and roof replacement −9%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $17,700 – $30,100 | −4% |
| Bathroom remodel | 45 sq ft | $4,500 – $22,200 | −5% |
| Detached garage | 576 sq ft | $27,900 – $55,900 | −4% |
| Roof replacement | 2,000 sq ft of roof | $5,450 – $11,400 | −9% |
Which Arizona city is cheapest for home addition?
1 of the 6 metros sit above the statewide midpoint of $54,800, and the top-to-bottom gap is 11%. Each row prices the default size with that metro's own BLS wages and BEA price levels, so the gap between rows is real local variation rather than a flat markup.
| Metro | Range (300 sq ft) | Midpoint | vs. state |
|---|---|---|---|
| Phoenix, AZ | $36,700 – $74,500 | $55,600 | +1% |
| Flagstaff, AZ | $35,600 – $72,200 | $53,900 | −2% |
| Prescott Valley, AZ | $35,100 – $71,200 | $53,100 | −3% |
| Tucson, AZ | $33,800 – $68,600 | $51,200 | −7% |
| Yuma, AZ | $33,500 – $68,000 | $50,800 | −7% |
| Lake Havasu City, AZ | $33,000 – $66,900 | $50,000 | −9% |
Wages behind the Arizona number
Arizona's labor line is priced from 6 trades, each compared with its US median wage. After weighting by each trade's share of the work, the state comes out at 0.95 times the national level.
Carpenters (47-2031), 50% of the weighting: a median of $28.17 an hour, 3% below the US median of $29.12. The middle half of them earn between $23.02 and $33.57 an hour. About 16,230 work in the state. That is 50.1 per 10,000 jobs, compared with 43.1 nationally, which suggests plenty of local crews to bid.
Cement masons and concrete finishers (47-2051), 10% of the weighting: a median of $28.32 an hour, 3% above the US median of $27.41. The middle half of them earn between $23.76 and $31.43 an hour. About 7,520 work in the state. That is 23.2 per 10,000 jobs, compared with 13.3 nationally, which suggests plenty of local crews to bid.
For electricians (47-2111, weighted 10%) the local median is $29.36 an hour, which is 3% below the national $30.38. The middle half of them earn between $23.25 and $37.05 an hour. BLS counts 21,140 of them working in the state, 65.3 for every 10,000 jobs (US: 48.7), so the local bench is deeper than average.
Plumbers, pipefitters and steamfitters (47-2152), 10% of the weighting: a median of $29.84 an hour, in line with the US median of $30.67. The middle half of them earn between $23.84 and $38.27 an hour. About 11,810 work in the state. That is 36.5 per 10,000 jobs, compared with 30.0 nationally, which suggests plenty of local crews to bid.
For drywall and ceiling tile installers (47-2081, weighted 10%) the local median is $24.18 an hour, which is 15% below the national $28.33. The middle half of them earn between $20.00 and $28.26 an hour. BLS counts 2,590 of them working in the state, 8.0 for every 10,000 jobs (US: 5.3), so the local bench is deeper than average.
Roofers (47-2181), 10% of the weighting: a median of $22.76 an hour, 15% below the US median of $26.65. The middle half of them earn between $19.16 and $28.43 an hour. About 3,420 work in the state. That is 10.6 per 10,000 jobs, compared with 8.7 nationally, which suggests plenty of local crews to bid.
A crew paid at the 75th percentile for carpenters ($33.57 an hour) would add about $3,550 to the statewide midpoint; one at the 25th percentile ($23.02) would take off about $3,400. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.
BLS counts 3,239,430 jobs across Arizona (May 2025), which is 2.1% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $23.02 | $28.17 | $33.57 | $29.12 | 0.97 | state |
| Cement masons and concrete finishers (47-2051) | 10% | $23.76 | $28.32 | $31.43 | $27.41 | 1.03 | state |
| Electricians (47-2111) | 10% | $23.25 | $29.36 | $37.05 | $30.38 | 0.97 | state |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $23.84 | $29.84 | $38.27 | $30.67 | 0.97 | state |
| Drywall and ceiling tile installers (47-2081) | 10% | $20.00 | $24.18 | $28.26 | $28.33 | 0.85 | state |
| Roofers (47-2181) | 10% | $19.16 | $22.76 | $28.43 | $26.65 | 0.85 | state |
| Blended | 100% | 0.95 | |||||
Basic, standard or premium: Arizona prices
Bands overlap on purpose, since a good standard job can cost as much as a light premium one. Below are the three bands for the default size, then a grid from bump-out (100 sq ft) to large suite (600 sq ft).
Basic
$36,200 to $51,100
Bump-out or simple room without plumbing
Standard
$47,400 to $62,300
Standard room addition with HVAC and electrical
Premium
$58,500 to $73,400
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $12,400 – $17,800 | $16,400 – $21,800 | $20,500 – $25,800 |
| 20x20 room (400 sq ft) | $48,100 – $67,800 | $62,900 – $82,500 | $77,600 – $97,200 |
| large suite (600 sq ft) | $71,900 – $101,000 | $93,800 – $123,000 | $115,500 – $145,000 |
Why two Arizona quotes can differ
Type of addition
A new room is $125-$250 per sq ft; a bump-out $85-$200; an attic conversion $50-$150; a garage conversion $50-$200 (HomeGuide).
Plumbing and fixtures
Adding a bathroom or kitchen drives the price up the most.
Permits
Construction permits run $500-$2,000, or $5-$21 per $1,000 of project cost (HomeGuide).
Foundation
A foundation, framing, roofing and matching exterior finishes all have to be built before the interior work starts.
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Home addition in Arizona: your questions
+How much does it cost to build a home addition in Arizona?
$36,200 to $73,400 for 300 sq ft, using statewide wages and prices. Metro areas inside Arizona can sit above or below that.
+Which city in Arizona is cheapest for home addition?
Lake Havasu City at about $50,000 (midpoint, 300 sq ft). The priciest is Phoenix at $55,600.
+Is home addition cheaper in Arizona than the US average?
It is 5% cheaper: $54,800 against $57,500 for 300 sq ft at the midpoint.
+What share of the price is labor in Arizona?
About 66% ($36,400). Materials are 31%. Statewide labor for this job is weighted 0.95x the national wage level.
+What do carpenters earn in Arizona?
The BLS statewide median is $28.17 an hour, against $29.12 for the US. The 25th to 75th percentile range is $23.02 to $33.57.
+Where does Arizona rank for home addition costs?
29th most expensive of 51 (the 50 states plus DC) at the midpoint, $54,800 for 300 sq ft. Rank 1 is the costliest.
+What do basic and premium home addition work cost in Arizona?
For 300 sq ft, basic work runs $36,200 to $51,100 and premium work $58,500 to $73,400. Basic means: bump-out or simple room without plumbing. Premium means: large addition with bath or kitchen and a new foundation.
+Does the season matter for home addition in Arizona?
Yes where winters or summers are hard. Of the Arizona metros we cover, Phoenix has the most comfortable months (7 of 12) based on NOAA 1991-2020 normals. Our prices do not change by month, so ask contractors whether they charge more or less in busy and slow seasons.
Home addition by city in Arizona
Where these numbers come from
Base prices are national ranges from the sources below. We scale labor by local BLS wages, materials by BEA goods prices and permits by the BEA all-items price level. Full method on the methodology page.
- HomeGuide: How Much Does a Home Addition Cost? (2026) (accessed November 4, 2026)
- Cost to Renovate: Renovation Labor Report 2026: Where the Money Goes (accessed November 4, 2026)
- HomeGuide: 2026 Building Permit Costs | Fees & Cost Calculator (accessed November 4, 2026)
- BLS Occupational Employment and Wage Statistics, May 2025
- BEA Regional Price Parities, 2024
- NOAA NCEI U.S. Climate Normals, 1991-2020
Note on derived figures: Materials = 32% of the installed price, from Cost to Renovate's mid-range 'Structural' category split (56% labor, 32% materials, 11% permits and design). It is a category average rather than an addition-specific figure.