Home addition cost in Spartanburg, SC
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $33,600 – $68,100
- Per sq ft
- $111 – $221
- before permit
- Versus US midpoint
- −12%
- US $57,500
- Rank of 300 metros
- #214
- 1 = most expensive
A home addition in Spartanburg, SC usually costs $33,600 to $68,100 for 300 sq ft. That works out to about $111 to $221 per sq ft before permits. Compared with the national midpoint that is $6,600 less. Carpenters earn a median of $24.88 an hour in the Spartanburg area, 15% below the US median of $29.12.
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Estimated cost for 300 sq ft in Spartanburg, SC, standard level
$44,000 to $57,800
About $144 to $188 per sq ft before permits. Labor is about 64% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $15,000 | $19,700 |
| Labor | $28,100 | $36,700 |
| Permits and fees | $860 | $1,400 |
| Total | $44,000 | $57,800 |
Cost breakdown for 300 sq ft in Spartanburg, SC
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,600 | $17,300 | $23,100 | 34% |
| Labor | $21,600 | $32,400 | $43,200 | 64% |
| Permits and fees | $460 | $1,150 | $1,800 | 2% |
| Total | $33,600 | $50,900 | $68,100 | 100% |
Where the Spartanburg price comes from
The wage side of the estimate leans on carpenters, who do 50% of the hours on a typical job. Their local median is $24.88 an hour. Add the other trades involved and the blended wage index for Spartanburg is 0.85 (US = 1.00), which puts labor at 64% of the total.
Materials are scaled with BEA's regional price parity for goods. Spartanburg is at 96.3 against 100 for the US, so a materials line of $18,000 nationally becomes $17,300 here (midpoint, 300 sq ft). Permits follow the all-items index of 91.1: $460 to $1,800.
Data note: 10% of the labor weighting for this project uses a statewide median because BLS has no published metro figure for that trade in Spartanburg. The wage table below marks each row.
What nearby projects cost in Spartanburg
Jobs that often go together with home addition are priced below at their usual sizes, using the same Spartanburg wage and price inputs. Compared with national midpoints, kitchen remodel comes out highest (−6%) and roof replacement lowest (−14%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $17,400 – $29,600 | −6% |
| Bathroom remodel | 45 sq ft | $4,200 – $20,700 | −11% |
| Detached garage | 576 sq ft | $26,500 – $53,100 | −9% |
| Roof replacement | 2,000 sq ft of roof | $5,150 – $10,800 | −14% |
Spartanburg weather and the home addition calendar
Climate numbers on this page come from NOAA's 1991-2020 U.S. Climate Normals at the nearest suitable station, Spartanburg 3 Sse (5 miles from the city center). They are 30-year averages, so any one year can run hotter, colder or wetter.
For digging, grading and setting material in the ground, the comfortable months in Spartanburg are February through June and August through December: 10 of 12. Outside them, January has an average overnight low at or below freezing (32°F), and July has an average daytime high of 90°F or more.
In January the average low is at or below freezing, which means frozen ground and slower digging, compaction and sod or stone placement. NOAA counts about 76 days a year with a low at or below 32°F at this station.
Spartanburg gets about 50 inches of precipitation in a normal year. The wettest months are March, June and December (4.8 inches in March). Inside the workable window, September and November are the driest, at 3.6 and 3.7 inches. The station averages about 57 days a year at 90°F or above.
We do not adjust the estimate by month, because we have no reliable published data on seasonal pricing. It is still worth asking contractors whether an off-peak start date changes their bid.
| Month | Avg high °F | Avg low °F | Precip (in) | For this job |
|---|---|---|---|---|
| Jan | 54 | 32 | 4.3 | Cold |
| Feb | 59 | 34 | 3.8 | Workable |
| Mar | 66 | 40 | 4.8 | Workable |
| Apr | 75 | 47 | 4.3 | Workable |
| May | 81 | 56 | 3.9 | Workable |
| Jun | 87 | 65 | 4.6 | Workable |
| Jul | 90 | 69 | 4.0 | Hot |
| Aug | 88 | 68 | 4.6 | Workable |
| Sep | 83 | 62 | 3.6 | Workable |
| Oct | 74 | 49 | 3.9 | Workable |
| Nov | 64 | 38 | 3.7 | Workable |
| Dec | 56 | 34 | 4.7 | Workable |
Spartanburg against nearby metros and the rest of South Carolina
Contractors rarely work more than an hour or two from home, so the neighboring metros set a rough ceiling and floor for your quotes. Midpoints for 300 sq ft range from $49,200 to $51,300 across Spartanburg and its five closest metros.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Spartanburg, SCthis page | $33,600 – $68,100 | $50,900 | |
| Greenville, SC35 miles | $33,400 – $67,700 | $50,600 | −1% |
| Charlotte, NC65 miles | $33,900 – $68,800 | $51,300 | +1% |
| Asheville, NC70 miles | $33,700 – $68,400 | $51,100 | level |
| Columbia, SC70 miles | $32,900 – $66,800 | $49,900 | −2% |
| Hickory, NC70 miles | $32,500 – $65,900 | $49,200 | −3% |
| South Carolina (statewide) | $33,500 – $67,900 | $50,700 | level |
| United States | $38,000 – $77,000 | $57,500 | +13% |
Out of the 300 metros we cover, Spartanburg ranks #214 for the cost of this job (#1 is the most expensive). Statewide, Spartanburg is 0% above the South Carolina figure.
Elsewhere in South Carolina
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Greenville, SC | 434,900 jobs | $33,400 – $67,700 | $50,600 | −1% |
| Columbia, SC | 394,200 jobs | $32,900 – $66,800 | $49,900 | −2% |
| Charleston, SC | 394,170 jobs | $33,600 – $68,200 | $50,900 | level |
| Myrtle Beach, SC | 146,260 jobs | $32,200 – $65,400 | $48,800 | −4% |
| Florence, SC | 89,060 jobs | $33,100 – $67,000 | $50,100 | −2% |
| Hilton Head, SC | 81,920 jobs | $33,300 – $67,600 | $50,500 | −1% |
Metros of a similar size
Big cities and small ones price differently, so here is Spartanburg against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Montgomery, AL | 165,550 jobs | $32,500 – $65,800 | $49,200 | −3% |
| Beaumont, TX | 163,220 jobs | $35,300 – $71,400 | $53,400 | +5% |
| Peoria, IL | 166,020 jobs | $43,700 – $88,300 | $66,000 | +30% |
| Canton, OH | 163,080 jobs | $36,600 – $74,200 | $55,400 | +9% |
What local crews earn in Spartanburg
The labor line is built from BLS wage data, one trade at a time. This job draws on 6 trades. We compare each trade's local median with the US median, weight the ratios by how much of the job each trade does, and apply the blend to the national labor cost. For Spartanburg the blend is 0.85.
Carpenters (47-2031), 50% of the weighting: a median of $24.88 an hour, 15% below the US median of $29.12. The middle half of them earn between $22.32 and $29.04 an hour. About 300 work in the metro. That is 18.2 per 10,000 jobs, compared with 43.1 nationally, so expect fewer local crews to bid.
Cement masons and concrete finishers (47-2051), 10% of the weighting: a median of $23.14 an hour, 16% below the US median of $27.41. The middle half of them earn between $22.89 and $29.24 an hour. About 110 work in the metro. That is 6.7 per 10,000 jobs, compared with 13.3 nationally, so expect fewer local crews to bid.
For electricians (47-2111, weighted 10%) the local median is $29.83 an hour, which is in line with the national $30.38. The middle half of them earn between $26.92 and $34.41 an hour. BLS counts 600 of them working in the area, 36.3 for every 10,000 jobs (US: 48.7), so the local bench is thinner than average.
Plumbers, pipefitters and steamfitters (47-2152), 10% of the weighting: a median of $25.31 an hour, 17% below the US median of $30.67. The middle half of them earn between $22.52 and $29.99 an hour. About 310 work in the metro. That is 18.8 per 10,000 jobs, compared with 30.0 nationally, so expect fewer local crews to bid.
Drywall and ceiling tile installers (47-2081) carry 10% of the labor weighting. BLS does not publish this trade for the Spartanburg metro, so we used the South Carolina statewide median: $21.80 an hour against $28.33 for the US. The middle half of them earn between $18.36 and $25.56 an hour.
Roofers (47-2181), 10% of the weighting: a median of $20.70 an hour, 22% below the US median of $26.65. The middle half of them earn between $18.36 and $23.31 an hour. About 130 work in the metro. That is 7.9 per 10,000 jobs, compared with 8.7 nationally, so the supply of crews looks typical.
A quick sensitivity check: moving the lead trade (carpenters) from the median to the 75th percentile wage adds about $2,750 to the midpoint estimate; the 25th percentile takes off about $1,700. That is a swing of roughly 3.3% to 5.4% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Spartanburg has 165,150 jobs in total (BLS, May 2025), ranking 143rd by size among the 300 metros on this site.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $22.32 | $24.88 | $29.04 | $29.12 | 0.85 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $22.89 | $23.14 | $29.24 | $27.41 | 0.84 | metro |
| Electricians (47-2111) | 10% | $26.92 | $29.83 | $34.41 | $30.38 | 0.98 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $22.52 | $25.31 | $29.99 | $30.67 | 0.83 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $18.36 | $21.80 | $25.56 | $28.33 | 0.77 | state |
| Roofers (47-2181) | 10% | $18.36 | $20.70 | $23.31 | $26.65 | 0.78 | metro |
| Blended | 100% | 0.85 | |||||
Pick a size, pick a tier: home addition pricing in Spartanburg
The cited range is split into basic, standard and premium bands, then scaled to Spartanburg. Bands overlap, because plenty of standard jobs cost as much as a light premium one. Sizes run from bump-out (100 sq ft) to large suite (600 sq ft).
Basic
$33,600 to $47,400
Bump-out or simple room without plumbing
Standard
$44,000 to $57,800
Standard room addition with HVAC and electrical
Premium
$54,300 to $68,100
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $11,500 – $16,500 | $15,200 – $20,200 | $19,000 – $23,900 |
| 20x20 room (400 sq ft) | $44,700 – $62,900 | $58,300 – $76,600 | $72,000 – $90,200 |
| large suite (600 sq ft) | $66,800 – $93,800 | $87,100 – $114,000 | $107,500 – $134,500 |
Specs and site conditions that change a Spartanburg bid
Foundation
A foundation, framing, roofing and matching exterior finishes all have to be built before the interior work starts.
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.
Get 3 local quotes
Tell us about the job and we will try to connect you with up to three local contractors for written quotes. It is free and you are under no obligation to hire. Your estimate of $44,000 to $57,800 for Spartanburg, SC is attached.
Detailed home addition report for Spartanburg, SC, $9
The report lays out the home addition numbers for Spartanburg, SC line by line, with the local wage and price inputs, permit and timing notes, a quote comparison sheet and the full method. Save your estimate above, preview page 1 free, and unlock the full report for $9 one-time, or get every report with CostLocal Pro.
Home addition in Spartanburg: your questions
+How much does it cost to build a home addition in Spartanburg?
For 300 sq ft, expect $33,600 to $68,100 in the Spartanburg area. A standard-spec job lands at $44,000 to $57,800. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in Spartanburg?
About $111 to $221 per sq ft for materials and labor, plus $460 to $1,800 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in Spartanburg or Greenville?
Greenville is 35 miles away. The midpoint for 300 sq ft there is $50,600, which is 1% less than Spartanburg ($50,900). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Spartanburg?
About 64% at the midpoint, or $32,400 out of $50,900. Materials are 34% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in Spartanburg?
$44,700 to $90,200. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in Spartanburg?
Often, but rules are set by your city or county building office, so call before you hire. Budget $460 to $1,800 for fees in the Spartanburg area (our national range of $500 to $2,000 scaled by the local price level).
+Is Spartanburg expensive for home addition compared with the rest of South Carolina?
Spartanburg is 0% above the South Carolina statewide estimate ($50,700 at the midpoint). We cover 7 metros in South Carolina; see the state page to compare them.
+What do carpenters earn in Spartanburg?
The BLS median is $24.88 an hour in the Spartanburg area, compared with $29.12 nationally. The 25th to 75th percentile range is $22.32 to $29.04.
+What do basic and premium home addition work cost in Spartanburg?
For 300 sq ft, basic work runs $33,600 to $47,400 and premium work $54,300 to $68,100. 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 Spartanburg?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are February through June and August through December. September and November 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 Spartanburg
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.