Home addition cost in Bloomington, IL
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $43,000 – $86,900
- Per sq ft
- $142 – $283
- before permit
- Versus US midpoint
- +13%
- US $57,500
- Rank of 300 metros
- #29
- 1 = most expensive
Local price for a home addition in the Bloomington area: $43,000 to $86,900 for 300 sq ft. The low end is a basic job on easy ground; the high end is a premium spec with harder access. The midpoint runs 13% higher than the US figure. Carpenters earn a median of $36.28 an hour in the Bloomington area, 25% above the US median of $29.12.
Estimate your home addition cost
Pick a size, a quality level and where you live. Prices update as you type.
Estimated cost for 300 sq ft in Bloomington, IL, standard level
$56,100 to $73,700
About $184 to $241 per sq ft before permits. Labor is about 72% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $14,600 | $19,100 |
| Labor | $40,600 | $53,100 |
| Permits and fees | $890 | $1,450 |
| Total | $56,100 | $73,700 |
Cost breakdown for 300 sq ft in Bloomington, IL
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,200 | $16,900 | $22,500 | 26% |
| Labor | $31,300 | $46,900 | $62,500 | 72% |
| Permits and fees | $470 | $1,150 | $1,850 | 2% |
| Total | $43,000 | $64,900 | $86,900 | 100% |
Why Bloomington 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, Bloomington wages are 1.23 times the national level. Labor makes up about 72% of the midpoint estimate (67% at national prices).
Materials are scaled with BEA's regional price parity for goods. Bloomington is at 93.6 against 100 for the US, so a materials line of $18,000 nationally becomes $16,900 here (midpoint, 300 sq ft). Permits follow the all-items index of 93.5: $470 to $1,850.
Data note: 20% of the labor weighting for this project uses a statewide median because BLS has no published metro figure for that trade in Bloomington. The wage table below marks each row.
Home addition: what moves the price in Bloomington
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.
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).
Who does the work: Bloomington trade wages
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 Bloomington the blend is 1.23.
Carpenters (47-2031), 50% of the weighting: a median of $36.28 an hour, 25% above the US median of $29.12. The middle half of them earn between $28.00 and $44.69 an hour. About 170 work in the metro. That is 19.3 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 $29.51 an hour, 8% above the US median of $27.41. The middle half of them earn between $22.66 and $37.88 an hour. About 110 work in the metro. That is 12.5 per 10,000 jobs, compared with 13.3 nationally, so the supply of crews looks typical.
For electricians (47-2111, weighted 10%) the local median is $38.19 an hour, which is 26% above the national $30.38. The middle half of them earn between $28.47 and $46.30 an hour. BLS counts 330 of them working in the area, 37.5 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 $37.36 an hour, 22% above the US median of $30.67. The middle half of them earn between $24.14 and $47.25 an hour. About 180 work in the metro. That is 20.4 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 Bloomington 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.
Roofers (47-2181) carry 10% of the labor weighting. BLS does not publish this trade for the Bloomington metro, so we used the Illinois statewide median: $37.45 an hour against $26.65 for the US. The middle half of them earn between $27.81 and $49.54 an hour.
A quick sensitivity check: moving the lead trade (carpenters) from the median to the 75th percentile wage adds about $5,500 to the midpoint estimate; the 25th percentile takes off about $5,450. That is a swing of roughly 8.4% to 8.5% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Bloomington has 88,110 jobs in total (BLS, May 2025), ranking 222nd 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% | $28.00 | $36.28 | $44.69 | $29.12 | 1.25 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $22.66 | $29.51 | $37.88 | $27.41 | 1.08 | metro |
| Electricians (47-2111) | 10% | $28.47 | $38.19 | $46.30 | $30.38 | 1.26 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $24.14 | $37.36 | $47.25 | $30.67 | 1.22 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $24.78 | $30.38 | $49.27 | $28.33 | 1.07 | state |
| Roofers (47-2181) | 10% | $27.81 | $37.45 | $49.54 | $26.65 | 1.41 | state |
| Blended | 100% | 1.23 | |||||
The best months for home addition in Bloomington
Climate numbers on this page come from NOAA's 1991-2020 U.S. Climate Normals at the nearest suitable station, Normal 4Ne (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 Bloomington are April through October: 7 of 12. Outside them, January, February, March, November and December have an average overnight low at or below freezing (32°F).
In January, February, March, November 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 133 days a year with a low at or below 32°F at this station.
Bloomington gets about 39 inches of precipitation in a normal year, including roughly 20 inches of snow. The wettest months are May, June and July (4.8 inches in May). Inside the workable window, September and October are the driest, at 3.2 and 3.5 inches. The station averages about 26 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 | 33 | 16 | 2.4 | Cold |
| Feb | 38 | 19 | 2.0 | Cold |
| Mar | 50 | 28 | 2.6 | Cold |
| Apr | 63 | 38 | 3.7 | Workable |
| May | 74 | 50 | 4.8 | Workable |
| Jun | 83 | 60 | 4.1 | Workable |
| Jul | 86 | 63 | 4.1 | Workable |
| Aug | 84 | 61 | 3.8 | Workable |
| Sep | 79 | 53 | 3.2 | Workable |
| Oct | 66 | 42 | 3.5 | Workable |
| Nov | 50 | 31 | 2.8 | Cold |
| Dec | 38 | 21 | 2.3 | Cold |
What nearby projects cost in Bloomington
Jobs that often go together with home addition are priced below at their usual sizes, using the same Bloomington wage and price inputs. Compared with national midpoints, roof replacement comes out highest (+21%) and kitchen remodel lowest (−1%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $18,300 – $31,200 | −1% |
| Bathroom remodel | 45 sq ft | $5,000 – $24,900 | +7% |
| Detached garage | 576 sq ft | $31,600 – $63,300 | +9% |
| Roof replacement | 2,000 sq ft of roof | $7,700 – $14,900 | +21% |
Cost by quality level and size in Bloomington
The cited range is split into basic, standard and premium bands, then scaled to Bloomington. 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
$43,000 to $60,500
Bump-out or simple room without plumbing
Standard
$56,100 to $73,700
Standard room addition with HVAC and electrical
Premium
$69,300 to $86,900
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $14,600 – $20,900 | $19,300 – $25,500 | $24,000 – $30,200 |
| 20x20 room (400 sq ft) | $57,100 – $80,400 | $74,600 – $97,800 | $92,000 – $115,000 |
| large suite (600 sq ft) | $85,500 – $120,000 | $111,500 – $146,000 | $137,500 – $172,000 |
Bloomington against nearby metros and the rest of Illinois
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 $56,700 to $74,000 across Bloomington and its five closest metros.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Bloomington, ILthis page | $43,000 – $86,900 | $64,900 | |
| Champaign, IL35 miles | $42,500 – $85,900 | $64,200 | −1% |
| Peoria, IL40 miles | $43,700 – $88,300 | $66,000 | +2% |
| Springfield, IL65 miles | $44,200 – $89,400 | $66,800 | +3% |
| Lafayette, IN95 miles | $37,500 – $75,900 | $56,700 | −13% |
| Chicago, IL100 miles | $49,000 – $99,000 | $74,000 | +14% |
| Illinois (statewide) | $47,400 – $95,800 | $71,600 | +10% |
| United States | $38,000 – $77,000 | $57,500 | −11% |
Out of the 300 metros we cover, Bloomington ranks #29 for the cost of this job (#1 is the most expensive). Statewide, Bloomington is 9% below the Illinois figure.
Elsewhere in Illinois
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Chicago, IL | 4,513,280 jobs | $49,000 – $99,000 | $74,000 | +14% |
| Peoria, IL | 166,020 jobs | $43,700 – $88,300 | $66,000 | +2% |
| Rockford, IL | 137,650 jobs | $43,600 – $88,200 | $65,900 | +2% |
| Champaign, IL | 105,500 jobs | $42,500 – $85,900 | $64,200 | −1% |
| Springfield, IL | 100,810 jobs | $44,200 – $89,400 | $66,800 | +3% |
Metros of a similar size
Big cities and small ones price differently, so here is Bloomington against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Florence, SC | 89,060 jobs | $33,100 – $67,000 | $50,100 | −23% |
| Monroe, LA | 87,500 jobs | $32,700 – $66,300 | $49,500 | −24% |
| Medford, OR | 89,060 jobs | $39,500 – $79,900 | $59,700 | −8% |
| Joplin, MO | 87,190 jobs | $34,300 – $69,400 | $51,900 | −20% |
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 $56,100 to $73,700 for Bloomington, IL is attached.
Detailed home addition report for Bloomington, IL, $9
The report lays out the home addition numbers for Bloomington, 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 Bloomington: your questions
+How much does it cost to build a home addition in Bloomington?
For 300 sq ft, expect $43,000 to $86,900 in the Bloomington area. A standard-spec job lands at $56,100 to $73,700. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in Bloomington?
About $142 to $283 per sq ft for materials and labor, plus $470 to $1,850 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in Bloomington or Champaign?
Champaign is 35 miles away. The midpoint for 300 sq ft there is $64,200, which is 1% less than Bloomington ($64,900). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Bloomington?
About 72% at the midpoint, or $46,900 out of $64,900. Materials are 26% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in Bloomington?
$57,100 to $115,000. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in Bloomington?
Often, but rules are set by your city or county building office, so call before you hire. Budget $470 to $1,850 for fees in the Bloomington area (our national range of $500 to $2,000 scaled by the local price level).
+Is Bloomington expensive for home addition compared with the rest of Illinois?
Bloomington is 9% 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 Bloomington?
The BLS median is $36.28 an hour in the Bloomington area, compared with $29.12 nationally. The 25th to 75th percentile range is $28.00 to $44.69.
+What do basic and premium home addition work cost in Bloomington?
For 300 sq ft, basic work runs $43,000 to $60,500 and premium work $69,300 to $86,900. 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 Bloomington?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are April through October. September and October 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 Bloomington
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.