Home addition cost in Eugene, OR
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $41,000 – $83,100
- Per sq ft
- $135 – $270
- before permit
- Versus US midpoint
- +8%
- US $57,500
- Rank of 300 metros
- #54
- 1 = most expensive
If you want to build a home addition in Eugene, plan on $41,000 to $83,100 for 300 sq ft, all in. Per sq ft, that is $135 to $270 for materials and labor, with the permit on top. The local midpoint runs 8% higher than the national one. Carpenters earn a median of $30.09 an hour in the Eugene area, 3% 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 Eugene, OR, standard level
$53,600 to $70,500
About $176 to $230 per sq ft before permits. Labor is about 67% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $16,400 | $21,500 |
| Labor | $36,300 | $47,400 |
| Permits and fees | $960 | $1,550 |
| Total | $53,600 | $70,500 |
Cost breakdown for 300 sq ft in Eugene, OR
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $12,600 | $18,900 | $25,300 | 31% |
| Labor | $27,900 | $41,800 | $55,800 | 67% |
| Permits and fees | $510 | $1,250 | $2,050 | 2% |
| Total | $41,000 | $62,100 | $83,100 | 100% |
Why Eugene prices look the way they do
The wage side of the estimate leans on carpenters, who do 50% of the hours on a typical job. Their local median is $30.09 an hour. Add the other trades involved and the blended wage index for Eugene is 1.09 (US = 1.00), which puts labor at 67% of the total.
On the materials line, the BEA goods price index for the Eugene metro is 105.3 (US = 100). The midpoint materials bill for 300 sq ft comes to $18,900, compared with $18,000 at national prices. Permit and inspection fees are scaled by the broader index (101.6) and land at $510 to $2,050.
Climate in Eugene: timing your home addition job
We use NOAA's 1991-2020 climate normals for Eugene Mahlon Sweet Ap (5 miles from the city center). These are 30-year monthly averages, not forecasts.
Weather is not a serious constraint for digging, grading and setting material in the ground in Eugene: no month in the averages is cold enough (an average overnight low at or below freezing (32°F)) or hot enough (an average daytime high of 90°F or more) to rule it out, so the workable window is all year.
Eugene gets about 41 inches of precipitation in a normal year. The wettest months are January, November and December (7.2 inches in December). The station averages about 18 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 | 48 | 35 | 6.0 | Workable |
| Feb | 52 | 35 | 4.7 | Workable |
| Mar | 57 | 37 | 4.6 | Workable |
| Apr | 61 | 40 | 3.3 | Workable |
| May | 68 | 44 | 2.5 | Workable |
| Jun | 74 | 48 | 1.2 | Workable |
| Jul | 84 | 52 | 0.3 | Workable |
| Aug | 84 | 52 | 0.4 | Workable |
| Sep | 78 | 48 | 1.4 | Workable |
| Oct | 65 | 42 | 3.2 | Workable |
| Nov | 53 | 38 | 6.0 | Workable |
| Dec | 47 | 34 | 7.2 | Workable |
Cost by quality level and size in Eugene
Three bands are cut from the same cited range and localized for Eugene 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
$41,000 to $57,900
Bump-out or simple room without plumbing
Standard
$53,600 to $70,500
Standard room addition with HVAC and electrical
Premium
$66,300 to $83,100
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $14,000 – $20,000 | $18,500 – $24,500 | $23,000 – $29,000 |
| 20x20 room (400 sq ft) | $54,500 – $76,800 | $71,200 – $93,400 | $87,900 – $110,000 |
| large suite (600 sq ft) | $81,600 – $114,500 | $106,500 – $139,500 | $131,000 – $164,000 |
Home addition: what moves the price in Eugene
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.
Planning more than one job in Eugene?
Because every project leans on different trades, Eugene's wage level does not move all prices equally. Against the US midpoint, bathroom remodel runs +11% and roof replacement −5%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $19,800 – $33,700 | +7% |
| Bathroom remodel | 45 sq ft | $5,200 – $25,800 | +11% |
| Detached garage | 576 sq ft | $30,600 – $61,500 | +6% |
| Roof replacement | 2,000 sq ft of roof | $5,700 – $12,000 | −5% |
Eugene 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 Eugene is 1.09 times the national level.
For carpenters (47-2031, weighted 50%) the local median is $30.09 an hour, which is 3% above the national $29.12. The middle half of them earn between $24.10 and $35.05 an hour. BLS counts 710 of them working in the area, 45.0 for every 10,000 jobs (US: 43.1), so the local bench is about average.
For cement masons and concrete finishers (47-2051, weighted 10%) the local median is $29.46 an hour, which is 7% above the national $27.41. The middle half of them earn between $26.83 and $39.43 an hour. BLS counts 210 of them working in the area, 13.3 for every 10,000 jobs (US: 13.3), so the local bench is about average.
Electricians (47-2111), 10% of the weighting: a median of $45.52 an hour, 50% above the US median of $30.38. The middle half of them earn between $36.61 and $51.00 an hour. About 750 work in the metro. That is 47.6 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 $40.82 an hour, which is 33% above the national $30.67. The middle half of them earn between $28.25 and $46.22 an hour. BLS counts 210 of them working in the area, 13.3 for every 10,000 jobs (US: 30.0), so the local bench is thinner than average.
Drywall and ceiling tile installers (47-2081), 10% of the weighting: a median of $28.48 an hour, in line with the US median of $28.33. The middle half of them earn between $22.59 and $35.48 an hour. About 70 work in the metro. That is 4.4 per 10,000 jobs, compared with 5.3 nationally, so expect fewer local crews to bid.
For roofers (47-2181, weighted 10%) the local median is $23.00 an hour, which is 14% below the national $26.65. The middle half of them earn between $22.03 and $28.83 an hour. BLS counts 280 of them working in the area, 17.8 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 ($35.05 an hour) instead of the median, the labor line grows by about $3,250. At the 25th percentile ($24.10) it shrinks by about $3,950. The total moves by 5.2% or 6.3%, so wages alone rarely explain a quote that is far outside our range.
For context on the local economy, BLS counts 157,710 jobs in the Eugene-Springfield area. That makes it the 150th largest of the 300 metros we cover, with 0.10% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $24.10 | $30.09 | $35.05 | $29.12 | 1.03 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $26.83 | $29.46 | $39.43 | $27.41 | 1.07 | metro |
| Electricians (47-2111) | 10% | $36.61 | $45.52 | $51.00 | $30.38 | 1.50 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $28.25 | $40.82 | $46.22 | $30.67 | 1.33 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $22.59 | $28.48 | $35.48 | $28.33 | 1.01 | metro |
| Roofers (47-2181) | 10% | $22.03 | $23.00 | $28.83 | $26.65 | 0.86 | metro |
| Blended | 100% | 1.09 | |||||
Eugene against nearby metros and the rest of Oregon
Of the five closest metros, 1 is cheaper than Eugene. Medford is the lowest at about $59,700 (midpoint, 300 sq ft), 105 miles away.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Eugene, ORthis page | $41,000 – $83,100 | $62,100 | |
| Salem, OR65 miles | $41,100 – $83,200 | $62,200 | level |
| Bend, OR100 miles | $42,300 – $85,600 | $64,000 | +3% |
| Medford, OR105 miles | $39,500 – $79,900 | $59,700 | −4% |
| Portland, OR115 miles | $46,600 – $94,300 | $70,500 | +14% |
| Yakima, WA205 miles | $41,100 – $83,200 | $62,100 | level |
| Oregon (statewide) | $43,300 – $87,700 | $65,500 | +6% |
| United States | $38,000 – $77,000 | $57,500 | −7% |
Across 300 US metros, Eugene comes in at #54 from the top. The priciest is Honolulu, HI at $79,600; the cheapest is Brownsville, TX at $44,300 (midpoints, 300 sq ft). Statewide, Eugene is 5% below the Oregon figure.
Other Oregon metros
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Portland, OR | 1,208,410 jobs | $46,600 – $94,300 | $70,500 | +14% |
| Salem, OR | 188,620 jobs | $41,100 – $83,200 | $62,200 | level |
| Bend, OR | 108,240 jobs | $42,300 – $85,600 | $64,000 | +3% |
| Medford, OR | 89,060 jobs | $39,500 – $79,900 | $59,700 | −4% |
Cities with a workforce like Eugene's
Big cities and small ones price differently, so here is Eugene against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Gulfport, MS | 158,310 jobs | $32,800 – $66,600 | $49,700 | −20% |
| Brownsville, TX | 157,450 jobs | $29,200 – $59,300 | $44,300 | −29% |
| Youngstown, OH | 160,160 jobs | $36,000 – $72,800 | $54,400 | −12% |
| Hickory, NC | 154,090 jobs | $32,500 – $65,900 | $49,200 | −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 $53,600 to $70,500 for Eugene, OR is attached.
A detailed PDF report of this estimate, $9
The report lays out the home addition numbers for Eugene, OR 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 Eugene: your questions
+How much does it cost to build a home addition in Eugene?
For 300 sq ft, expect $41,000 to $83,100 in the Eugene area. A standard-spec job lands at $53,600 to $70,500. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in Eugene?
About $135 to $270 per sq ft for materials and labor, plus $510 to $2,050 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in Eugene or Salem?
Salem is 65 miles away. The midpoint for 300 sq ft there is $62,200, which is 0% more than Eugene ($62,100). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Eugene?
About 67% at the midpoint, or $41,800 out of $62,100. Materials are 31% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in Eugene?
$54,500 to $110,000. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in Eugene?
Often, but rules are set by your city or county building office, so call before you hire. Budget $510 to $2,050 for fees in the Eugene area (our national range of $500 to $2,000 scaled by the local price level).
+Is Eugene expensive for home addition compared with the rest of Oregon?
Eugene is 5% below the Oregon statewide estimate ($65,500 at the midpoint). We cover 5 metros in Oregon; see the state page to compare them.
+What do carpenters earn in Eugene?
The BLS median is $30.09 an hour in the Eugene area, compared with $29.12 nationally. The 25th to 75th percentile range is $24.10 to $35.05.
+What do basic and premium home addition work cost in Eugene?
For 300 sq ft, basic work runs $41,000 to $57,900 and premium work $66,300 to $83,100. Basic means: bump-out or simple room without plumbing. Premium means: large addition with bath or kitchen and a new foundation.
+Is there a bad season to build a home addition in Eugene?
Not from a temperature point of view. NOAA's 1991-2020 normals show no month with a freezing-level overnight low or a 90°F-plus average high, so timing is mostly about contractor availability and rain.
Home addition near Eugene
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.