Home addition cost in St. George, UT
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $33,200 – $67,300
- Per sq ft
- $109 – $218
- before permit
- Versus US midpoint
- −13%
- US $57,500
- Rank of 300 metros
- #233
- 1 = most expensive
If you want to build a home addition in St. George, plan on $33,200 to $67,300 for 300 sq ft, all in. Per sq ft, that is $109 to $218 for materials and labor, with the permit on top. The local midpoint runs 13% lower than the national one. Carpenters earn a median of $22.63 an hour in the St. George area, 22% below the US median of $29.12.
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Estimated cost for 300 sq ft in St. George, UT, standard level
$43,400 to $57,000
About $142 to $185 per sq ft before permits. Labor is about 63% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $15,000 | $19,700 |
| Labor | $27,400 | $35,900 |
| Permits and fees | $920 | $1,500 |
| Total | $43,400 | $57,000 |
Cost breakdown for 300 sq ft in St. George, UT
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,600 | $17,400 | $23,100 | 35% |
| Labor | $21,100 | $31,600 | $42,200 | 63% |
| Permits and fees | $490 | $1,200 | $1,950 | 2% |
| Total | $33,200 | $50,200 | $67,300 | 100% |
Why St. George prices look the way they do
We price the labor side from BLS wage data for 6 trades: carpenters at 50%, cement masons and concrete finishers at 10%, electricians at 10%, plumbers, pipefitters and steamfitters at 10%, drywall and ceiling tile installers at 10%, roofers at 10%. Weighted together, St. George wages are 0.83 times the national level. Labor makes up about 63% of the midpoint estimate (67% at national prices).
On the materials line, the BEA goods price index for the St. George metro is 96.4 (US = 100). The midpoint materials bill for 300 sq ft comes to $17,400, compared with $18,000 at national prices. Permit and inspection fees are scaled by the broader index (97.3) and land at $490 to $1,950.
Why two St. George quotes can differ
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.
St. George: what basic, standard and premium work costs
Three bands are cut from the same cited range and localized for St. George wages and prices. They overlap on purpose: a good standard job and a modest premium job can cost the same. The grid below prices the same bands at 3 common sizes.
Basic
$33,200 to $46,800
Bump-out or simple room without plumbing
Standard
$43,400 to $57,000
Standard room addition with HVAC and electrical
Premium
$53,600 to $67,300
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $11,400 – $16,300 | $15,100 – $20,000 | $18,800 – $23,700 |
| 20x20 room (400 sq ft) | $44,000 – $62,000 | $57,500 – $75,500 | $71,000 – $89,100 |
| large suite (600 sq ft) | $65,800 – $92,500 | $85,900 – $112,500 | $106,000 – $132,500 |
Related projects, priced for St. George
Because every project leans on different trades, St. George's wage level does not move all prices equally. Against the US midpoint, kitchen remodel runs −6% and bathroom remodel −10%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $17,300 – $29,500 | −6% |
| Bathroom remodel | 45 sq ft | $4,250 – $21,000 | −10% |
| Detached garage | 576 sq ft | $26,300 – $52,700 | −9% |
| Roof replacement | 2,000 sq ft of roof | $5,650 – $11,700 | −7% |
St. George labor market for home addition
Wages are the part of this estimate that changes most from town to town. 6 trades carry the job here, and each is compared with its US median. The weighted result for St. George is 0.83 times the national level.
For carpenters (47-2031, weighted 50%) the local median is $22.63 an hour, which is 22% below the national $29.12. The middle half of them earn between $19.45 and $28.36 an hour. BLS counts 1,110 of them working in the area, 122.7 for every 10,000 jobs (US: 43.1), so the local bench is deeper than average.
For cement masons and concrete finishers (47-2051, weighted 10%) the local median is $23.11 an hour, which is 16% below the national $27.41. The middle half of them earn between $22.22 and $28.78 an hour. BLS counts 520 of them working in the area, 57.5 for every 10,000 jobs (US: 13.3), so the local bench is deeper than average.
Electricians (47-2111), 10% of the weighting: a median of $27.17 an hour, 11% below the US median of $30.38. The middle half of them earn between $22.22 and $35.91 an hour. About 490 work in the metro. That is 54.1 per 10,000 jobs, compared with 48.7 nationally, so the supply of crews looks typical.
For plumbers, pipefitters and steamfitters (47-2152, weighted 10%) the local median is $27.27 an hour, which is 11% below the national $30.67. The middle half of them earn between $21.70 and $33.04 an hour. BLS counts 370 of them working in the area, 40.9 for every 10,000 jobs (US: 30.0), so the local bench is deeper than average.
Drywall and ceiling tile installers (47-2081), 10% of the weighting: a median of $24.47 an hour, 14% below the US median of $28.33. The middle half of them earn between $23.06 and $25.00 an hour. About 380 work in the metro. That is 42.0 per 10,000 jobs, compared with 5.3 nationally, which suggests plenty of local crews to bid.
For roofers (47-2181, weighted 10%) the local median is $23.86 an hour, which is 10% below the national $26.65. The middle half of them earn between $20.75 and $30.31 an hour. BLS counts 260 of them working in the area, 28.7 for every 10,000 jobs (US: 8.7), so the local bench is deeper than average.
Quotes come from real crews, not medians. If the carpenters on your job are paid at the 75th percentile ($28.36 an hour) instead of the median, the labor line grows by about $3,750. At the 25th percentile ($19.45) it shrinks by about $2,100. The total moves by 7.5% or 4.2%, so wages alone rarely explain a quote that is far outside our range.
For context on the local economy, BLS counts 90,500 jobs in the St. George area. That makes it the 219th largest of the 300 metros we cover, with 0.06% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $19.45 | $22.63 | $28.36 | $29.12 | 0.78 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $22.22 | $23.11 | $28.78 | $27.41 | 0.84 | metro |
| Electricians (47-2111) | 10% | $22.22 | $27.17 | $35.91 | $30.38 | 0.89 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $21.70 | $27.27 | $33.04 | $30.67 | 0.89 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $23.06 | $24.47 | $25.00 | $28.33 | 0.86 | metro |
| Roofers (47-2181) | 10% | $20.75 | $23.86 | $30.31 | $26.65 | 0.90 | metro |
| Blended | 100% | 0.83 | |||||
Climate in St. George: timing your home addition job
We use NOAA's 1991-2020 climate normals for St George (5 miles from the city center). These are 30-year monthly averages, not forecasts.
March through May and October through November are the stretches where digging, grading and setting material in the ground runs into the fewest weather problems in St. George (5 of 12 months). January, February and December have an average overnight low at or below freezing (32°F); June, July, August and September have an average daytime high of 90°F or more.
In January, February and December the average low is at or below freezing, which means frozen ground and slower digging, compaction and sod or stone placement. NOAA counts about 63 days a year with a low at or below 32°F at this station.
St. George gets about 9 inches of precipitation in a normal year, including roughly 1 inches of snow. The wettest months are January, February and August (1.4 inches in February). Inside the workable window, April and May are the driest, at 0.7 and 0.3 inches. The station averages about 128 days a year at 90°F or above.
Does the season change the price? Probably, but we do not have a sourced seasonal price curve, so the estimator shows a year-round figure and does not adjust by month. When you collect quotes, ask whether scheduling in a slower month gets a better rate.
| Month | Avg high °F | Avg low °F | Precip (in) | For this job |
|---|---|---|---|---|
| Jan | 54 | 28 | 1.2 | Cold |
| Feb | 59 | 32 | 1.4 | Cold |
| Mar | 68 | 39 | 1.0 | Workable |
| Apr | 75 | 46 | 0.7 | Workable |
| May | 85 | 56 | 0.3 | Workable |
| Jun | 96 | 65 | 0.2 | Hot |
| Jul | 102 | 72 | 0.5 | Hot |
| Aug | 100 | 70 | 1.1 | Hot |
| Sep | 92 | 61 | 0.7 | Hot |
| Oct | 79 | 47 | 0.8 | Workable |
| Nov | 64 | 35 | 0.7 | Workable |
| Dec | 53 | 28 | 0.9 | Cold |
St. George against nearby metros and the rest of Utah
Same job, same size (300 sq ft), priced for the nearest metros. Las Vegas is the priciest of the group at $57,100. Lake Havasu City is the cheapest at $50,000.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| St. George, UTthis page | $33,200 – $67,300 | $50,200 | |
| Lake Havasu City, AZ110 miles | $33,000 – $66,900 | $50,000 | level |
| Las Vegas, NV110 miles | $37,700 – $76,400 | $57,100 | +14% |
| Flagstaff, AZ135 miles | $35,600 – $72,200 | $53,900 | +7% |
| Prescott Valley, AZ190 miles | $35,100 – $71,200 | $53,100 | +6% |
| Provo, UT190 miles | $34,600 – $70,200 | $52,400 | +4% |
| Utah (statewide) | $35,000 – $71,100 | $53,000 | +6% |
| United States | $38,000 – $77,000 | $57,500 | +15% |
Across 300 US metros, St. George comes in at #233 from the top. The priciest is Honolulu, HI at $79,600; the cheapest is Brownsville, TX at $44,300 (midpoints, 300 sq ft). Statewide, St. George is 5% below the Utah figure.
Other Utah metros
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Salt Lake City, UT | 826,210 jobs | $37,100 – $75,300 | $56,200 | +12% |
| Provo, UT | 304,660 jobs | $34,600 – $70,200 | $52,400 | +4% |
| Ogden, UT | 271,370 jobs | $34,400 – $69,800 | $52,100 | +4% |
| Logan, UT | 66,800 jobs | $33,700 – $68,400 | $51,100 | +2% |
Cities with a workforce like St. George's
Big cities and small ones price differently, so here is St. George against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Panama City, FL | 90,610 jobs | $32,900 – $66,700 | $49,800 | −1% |
| Medford, OR | 89,060 jobs | $39,500 – $79,900 | $59,700 | +19% |
| Bellingham, WA | 91,390 jobs | $45,500 – $92,000 | $68,800 | +37% |
| Florence, SC | 89,060 jobs | $33,100 – $67,000 | $50,100 | level |
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Home addition in St. George: your questions
+How much does it cost to build a home addition in St. George?
For 300 sq ft, expect $33,200 to $67,300 in the St. George area. A standard-spec job lands at $43,400 to $57,000. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in St. George?
About $109 to $218 per sq ft for materials and labor, plus $490 to $1,950 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in St. George or Lake Havasu City?
Lake Havasu City is 110 miles away. The midpoint for 300 sq ft there is $50,000, which is 0% less than St. George ($50,200). Wage and materials indexes both feed that gap.
+How much of the bill is labor in St. George?
About 63% at the midpoint, or $31,600 out of $50,200. Materials are 35% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in St. George?
$44,000 to $89,100. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in St. George?
Often, but rules are set by your city or county building office, so call before you hire. Budget $490 to $1,950 for fees in the St. George area (our national range of $500 to $2,000 scaled by the local price level).
+Is St. George expensive for home addition compared with the rest of Utah?
St. George is 5% below the Utah statewide estimate ($53,000 at the midpoint). We cover 5 metros in Utah; see the state page to compare them.
+What do carpenters earn in St. George?
The BLS median is $22.63 an hour in the St. George area, compared with $29.12 nationally. The 25th to 75th percentile range is $19.45 to $28.36.
+What do basic and premium home addition work cost in St. George?
For 300 sq ft, basic work runs $33,200 to $46,800 and premium work $53,600 to $67,300. Basic means: bump-out or simple room without plumbing. Premium means: large addition with bath or kitchen and a new foundation.
+When is the best time to build a home addition in St. George?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are March through May and October through November. April and May are typically the driest of those months. Local contractors' schedules matter as much as the weather, so book early for the busy months.
Home addition near St. George
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.