Home addition cost in Springfield, IL
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $44,200 – $89,400
- Per sq ft
- $146 – $292
- before permit
- Versus US midpoint
- +16%
- US $57,500
- Rank of 300 metros
- #17
- 1 = most expensive
If you want to build a home addition in Springfield, plan on $44,200 to $89,400 for 300 sq ft, all in. Per sq ft, that is $146 to $292 for materials and labor, with the permit on top. The local midpoint runs 16% higher than the national one. Carpenters earn a median of $37.01 an hour in the Springfield area, 27% above the US median of $29.12.
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Estimated cost for 300 sq ft in Springfield, IL, standard level
$57,800 to $75,900
About $190 to $248 per sq ft before permits. Labor is about 73% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $14,600 | $19,100 |
| Labor | $42,300 | $55,300 |
| Permits and fees | $880 | $1,450 |
| Total | $57,800 | $75,900 |
Cost breakdown for 300 sq ft in Springfield, IL
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,200 | $16,900 | $22,500 | 25% |
| Labor | $32,500 | $48,800 | $65,100 | 73% |
| Permits and fees | $460 | $1,150 | $1,850 | 2% |
| Total | $44,200 | $66,800 | $89,400 | 100% |
Why Springfield prices look the way they do
Labor is 73% of the midpoint bill here, against 67% nationally. The mix of trades behind this job is carpenters (50%), cement masons and concrete finishers (10%), electricians (10%), plumbers, pipefitters and steamfitters (10%), drywall and ceiling tile installers (10%), roofers (10%). We weight each trade's local median wage by that share and compare it with the national median. In Springfield the blended ratio comes out at 1.28.
On the materials line, the BEA goods price index for the Springfield metro is 93.6 (US = 100). The midpoint materials bill for 300 sq ft comes to $16,900, compared with $18,000 at national prices. Permit and inspection fees are scaled by the broader index (92.7) and land at $460 to $1,850.
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 Springfield. The wage table below marks each row.
Specs and site conditions that change a Springfield bid
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.
Climate in Springfield: timing your home addition job
We use NOAA's 1991-2020 climate normals for Springfield #2 (5 miles from the city center). These are 30-year monthly averages, not forecasts.
April through November is the stretch where digging, grading and setting material in the ground runs into the fewest weather problems in Springfield (8 of 12 months). January, February, March and December have an average overnight low at or below freezing (32°F).
In January, February, March 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 114 days a year with a low at or below 32°F at this station.
Springfield gets about 40 inches of precipitation in a normal year. The wettest months are May, June and July (5.1 inches in May). Inside the workable window, August and September are the driest, at 2.9 and 3.1 inches. The station averages about 23 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 | 36 | 19 | 2.2 | Cold |
| Feb | 41 | 22 | 2.2 | Cold |
| Mar | 52 | 31 | 3.0 | Cold |
| Apr | 65 | 41 | 4.1 | Workable |
| May | 74 | 53 | 5.1 | Workable |
| Jun | 83 | 63 | 5.0 | Workable |
| Jul | 86 | 66 | 4.4 | Workable |
| Aug | 84 | 64 | 2.9 | Workable |
| Sep | 78 | 56 | 3.1 | Workable |
| Oct | 66 | 44 | 3.1 | Workable |
| Nov | 53 | 33 | 3.1 | Workable |
| Dec | 41 | 24 | 2.3 | Cold |
Cost by quality level and size in Springfield
Three bands are cut from the same cited range and localized for Springfield 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
$44,200 to $62,300
Bump-out or simple room without plumbing
Standard
$57,800 to $75,900
Standard room addition with HVAC and electrical
Premium
$71,400 to $89,400
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $15,100 – $21,500 | $19,900 – $26,200 | $24,700 – $31,000 |
| 20x20 room (400 sq ft) | $58,800 – $82,800 | $76,800 – $100,500 | $94,700 – $118,500 |
| large suite (600 sq ft) | $88,000 – $123,500 | $114,500 – $150,500 | $141,500 – $177,000 |
Springfield 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 Springfield is 1.28 times the national level.
For carpenters (47-2031, weighted 50%) the local median is $37.01 an hour, which is 27% above the national $29.12. The middle half of them earn between $26.51 and $39.67 an hour. BLS counts 290 of them working in the area, 28.8 for every 10,000 jobs (US: 43.1), so the local bench is thinner than average.
For cement masons and concrete finishers (47-2051, weighted 10%) the local median is $30.44 an hour, which is 11% above the national $27.41. The middle half of them earn between $24.31 and $39.88 an hour. BLS counts 100 of them working in the area, 9.9 for every 10,000 jobs (US: 13.3), so the local bench is thinner than average.
Electricians (47-2111), 10% of the weighting: a median of $40.76 an hour, 34% above the US median of $30.38. The middle half of them earn between $30.03 and $50.49 an hour. About 330 work in the metro. That is 32.7 per 10,000 jobs, compared with 48.7 nationally, so expect fewer local crews to bid.
For plumbers, pipefitters and steamfitters (47-2152, weighted 10%) the local median is $45.37 an hour, which is 48% above the national $30.67. The middle half of them earn between $30.86 and $49.79 an hour. BLS counts 220 of them working in the area, 21.8 for every 10,000 jobs (US: 30.0), so the local bench is thinner than average.
Drywall and ceiling tile installers (47-2081) carry 10% of the labor weighting. BLS does not publish this trade for the Springfield metro, so we used the Illinois statewide median: $30.38 an hour against $28.33 for the US. The middle half of them earn between $24.78 and $49.27 an hour.
For roofers (47-2181, weighted 10%) the local median is $37.45 an hour, which is 41% above the national $26.65. The middle half of them earn between $28.37 and $47.68 an hour. BLS counts 270 of them working in the area, 26.8 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 ($39.67 an hour) instead of the median, the labor line grows by about $1,750. At the 25th percentile ($26.51) it shrinks by about $6,900. The total moves by 2.6% or 10.3%, so wages alone rarely explain a quote that is far outside our range.
For context on the local economy, BLS counts 100,810 jobs in the Springfield area. That makes it the 203rd 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% | $26.51 | $37.01 | $39.67 | $29.12 | 1.27 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $24.31 | $30.44 | $39.88 | $27.41 | 1.11 | metro |
| Electricians (47-2111) | 10% | $30.03 | $40.76 | $50.49 | $30.38 | 1.34 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $30.86 | $45.37 | $49.79 | $30.67 | 1.48 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $24.78 | $30.38 | $49.27 | $28.33 | 1.07 | state |
| Roofers (47-2181) | 10% | $28.37 | $37.45 | $47.68 | $26.65 | 1.41 | metro |
| Blended | 100% | 1.28 | |||||
Is Springfield cheap or dear? The local comparison
Same job, same size (300 sq ft), priced for the nearest metros. Springfield is the priciest of the group. Davenport is the cheapest at $57,500.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Springfield, ILthis page | $44,200 – $89,400 | $66,800 | |
| Bloomington, IL65 miles | $43,000 – $86,900 | $64,900 | −3% |
| Peoria, IL65 miles | $43,700 – $88,300 | $66,000 | −1% |
| Champaign, IL80 miles | $42,500 – $85,900 | $64,200 | −4% |
| St. Louis, MO85 miles | $41,800 – $84,600 | $63,200 | −5% |
| Davenport, IA115 miles | $38,000 – $77,000 | $57,500 | −14% |
| Illinois (statewide) | $47,400 – $95,800 | $71,600 | +7% |
| United States | $38,000 – $77,000 | $57,500 | −14% |
Across 300 US metros, Springfield comes in at #17 from the top. The priciest is Honolulu, HI at $79,600; the cheapest is Brownsville, TX at $44,300 (midpoints, 300 sq ft). Statewide, Springfield is 7% below the Illinois figure.
Other Illinois metros
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Chicago, IL | 4,513,280 jobs | $49,000 – $99,000 | $74,000 | +11% |
| Peoria, IL | 166,020 jobs | $43,700 – $88,300 | $66,000 | −1% |
| Rockford, IL | 137,650 jobs | $43,600 – $88,200 | $65,900 | −1% |
| Champaign, IL | 105,500 jobs | $42,500 – $85,900 | $64,200 | −4% |
| Bloomington, IL | 88,110 jobs | $43,000 – $86,900 | $64,900 | −3% |
Cities with a workforce like Springfield's
Big cities and small ones price differently, so here is Springfield against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Lake Charles, LA | 101,690 jobs | $33,100 – $67,100 | $50,100 | −25% |
| Santa Cruz, CA | 98,500 jobs | $44,100 – $89,300 | $66,700 | level |
| Lafayette, IN | 102,200 jobs | $37,500 – $75,900 | $56,700 | −15% |
| Slidell, LA | 98,240 jobs | $33,000 – $66,900 | $50,000 | −25% |
Related projects, priced for Springfield
Because every project leans on different trades, Springfield's wage level does not move all prices equally. Against the US midpoint, roof replacement runs +21% and kitchen remodel +1%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $18,600 – $31,700 | +1% |
| Bathroom remodel | 45 sq ft | $5,300 – $26,300 | +13% |
| Detached garage | 576 sq ft | $32,000 – $64,100 | +10% |
| Roof replacement | 2,000 sq ft of roof | $7,700 – $14,900 | +21% |
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 $57,800 to $75,900 for Springfield, IL is attached.
Detailed home addition report for Springfield, IL, $9
The report lays out the home addition numbers for Springfield, IL 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 Springfield: your questions
+How much does it cost to build a home addition in Springfield?
For 300 sq ft, expect $44,200 to $89,400 in the Springfield area. A standard-spec job lands at $57,800 to $75,900. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in Springfield?
About $146 to $292 per sq ft for materials and labor, plus $460 to $1,850 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in Springfield or Bloomington?
Bloomington is 65 miles away. The midpoint for 300 sq ft there is $64,900, which is 3% less than Springfield ($66,800). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Springfield?
About 73% at the midpoint, or $48,800 out of $66,800. Materials are 25% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in Springfield?
$58,800 to $118,500. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in Springfield?
Often, but rules are set by your city or county building office, so call before you hire. Budget $460 to $1,850 for fees in the Springfield area (our national range of $500 to $2,000 scaled by the local price level).
+Is Springfield expensive for home addition compared with the rest of Illinois?
Springfield is 7% below the Illinois statewide estimate ($71,600 at the midpoint). We cover 6 metros in Illinois; see the state page to compare them.
+What do carpenters earn in Springfield?
The BLS median is $37.01 an hour in the Springfield area, compared with $29.12 nationally. The 25th to 75th percentile range is $26.51 to $39.67.
+What do basic and premium home addition work cost in Springfield?
For 300 sq ft, basic work runs $44,200 to $62,300 and premium work $71,400 to $89,400. 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 Springfield?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are April through November. August and September 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 Springfield
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.