Home addition cost in Oregon
Statewide estimate from BLS wages and BEA prices. Reviewed Nov 4, 2026.
- Statewide range (300 sq ft)
- $43,300 – $87,700
- Per sq ft
- $143 – $285
- before permit
- Versus US midpoint
- +14%
- US $57,500
- Metros covered
- 5
Across Oregon, a home addition costs about $43,300 to $87,700 for 300 sq ft. Statewide, that midpoint is 14% above the US figure of $57,500. Carpenters earn a median $30.23 an hour in Oregon (US: $29.12).
Inside Oregon, the metros we cover range from $59,700 (Medford) to $70,500 (Portland) at the midpoint. Pick your closest city in the table for a tighter number.
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Estimated cost for 300 sq ft in Oregon (statewide), standard level
$56,600 to $74,400
About $185 to $243 per sq ft before permits. Labor is about 69% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $16,400 | $21,500 |
| Labor | $39,200 | $51,300 |
| Permits and fees | $980 | $1,600 |
| Total | $56,600 | $74,400 |
Cost breakdown for 300 sq ft in Oregon
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $12,600 | $18,900 | $25,300 | 29% |
| Labor | $30,200 | $45,200 | $60,300 | 69% |
| Permits and fees | $520 | $1,300 | $2,050 | 2% |
| Total | $43,300 | $65,500 | $87,700 | 100% |
If you are planning more than one job in Oregon
Each project weights the trades differently, so Oregon's wage level does not push every price by the same amount. Compared with the US midpoint, bathroom remodel is +15% and roof replacement +6%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $20,100 – $34,100 | +8% |
| Bathroom remodel | 45 sq ft | $5,400 – $26,800 | +15% |
| Detached garage | 576 sq ft | $31,600 – $63,400 | +9% |
| Roof replacement | 2,000 sq ft of roof | $6,500 – $13,200 | +6% |
How Oregon compares with nearby states
Oregon ranks 8 of 51 (the 50 states plus DC) for home addition, where 1 is the most expensive. The costliest is Hawaii at $76,300 and the cheapest Arkansas at $48,200, both for 300 sq ft at the midpoint. Oregon sits at $65,500. The five states closest by workforce center are listed below.
| State | Distance | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Washington | 170 miles away | $45,200 – $91,400 | $68,300 | +4% |
| Idaho | 350 miles away | $34,700 – $70,300 | $52,500 | −20% |
| Montana | 550 miles away | $38,700 – $78,400 | $58,600 | −11% |
| Utah | 600 miles away | $35,000 – $71,100 | $53,000 | −19% |
| Nevada | 660 miles away | $38,000 – $76,900 | $57,400 | −12% |
Oregon seasons and home addition
Weather decides when digging and ground work can happen, and Oregon is not uniform. The table uses NOAA's 1991-2020 climate normals from the weather station nearest each metro we cover, and counts the months that are neither cold nor hot enough to complicate the job.
Portland has the longest comfortable season of the metros we cover in Oregon at 12 months; Bend has the shortest at 6 (May through October). Rainfall runs from 11 inches a year in Bend to 41 inches in Eugene.
We do not adjust prices by month, because we have no reliable published data on seasonal pricing. Timing is still worth raising when you collect bids.
| Metro | Jan avg low °F | Jul avg high °F | Precip (in/yr) | Comfortable months |
|---|---|---|---|---|
| Portland | 36 | 82 | 37 | 12: all year |
| Salem | 36 | 84 | 40 | 12: all year |
| Eugene | 35 | 84 | 41 | 12: all year |
| Bend | 25 | 84 | 11 | 6: May through October |
| Medford | 33 | 92 | 18 | 10: September through June |
Wages behind the Oregon number
Oregon's labor line is priced from 6 trades, each compared with its US median wage. After weighting by each trade's share of the work, the state comes out at 1.18 times the national level.
Carpenters (47-2031), 50% of the weighting: a median of $30.23 an hour, 4% above the US median of $29.12. The middle half of them earn between $24.26 and $44.89 an hour. About 15,110 work in the state. That is 76.8 per 10,000 jobs, compared with 43.1 nationally, which suggests plenty of local crews to bid.
Cement masons and concrete finishers (47-2051), 10% of the weighting: a median of $32.95 an hour, 20% above the US median of $27.41. The middle half of them earn between $27.85 and $39.84 an hour. About 2,170 work in the state. That is 11.0 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 $48.71 an hour, which is 60% above the national $30.38. The middle half of them earn between $38.03 and $58.50 an hour. BLS counts 10,590 of them working in the state, 53.8 for every 10,000 jobs (US: 48.7), so the local bench is about average.
Plumbers, pipefitters and steamfitters (47-2152), 10% of the weighting: a median of $46.66 an hour, 52% above the US median of $30.67. The middle half of them earn between $36.02 and $60.77 an hour. About 5,370 work in the state. That is 27.3 per 10,000 jobs, compared with 30.0 nationally, so the supply of crews looks typical.
For drywall and ceiling tile installers (47-2081, weighted 10%) the local median is $35.35 an hour, which is 25% above the national $28.33. The middle half of them earn between $24.36 and $50.94 an hour. BLS counts 1,680 of them working in the state, 8.5 for every 10,000 jobs (US: 5.3), so the local bench is deeper than average.
Roofers (47-2181), 10% of the weighting: a median of $28.35 an hour, 6% above the US median of $26.65. The middle half of them earn between $23.42 and $33.22 an hour. About 3,430 work in the state. That is 17.4 per 10,000 jobs, compared with 8.7 nationally, which suggests plenty of local crews to bid.
A crew paid at the 75th percentile for carpenters ($44.89 an hour) would add about $9,650 to the statewide midpoint; one at the 25th percentile ($24.26) would take off about $3,900. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.
BLS counts 1,967,130 jobs across Oregon (May 2025), which is 1.3% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $24.26 | $30.23 | $44.89 | $29.12 | 1.04 | state |
| Cement masons and concrete finishers (47-2051) | 10% | $27.85 | $32.95 | $39.84 | $27.41 | 1.20 | state |
| Electricians (47-2111) | 10% | $38.03 | $48.71 | $58.50 | $30.38 | 1.60 | state |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $36.02 | $46.66 | $60.77 | $30.67 | 1.52 | state |
| Drywall and ceiling tile installers (47-2081) | 10% | $24.36 | $35.35 | $50.94 | $28.33 | 1.25 | state |
| Roofers (47-2181) | 10% | $23.42 | $28.35 | $33.22 | $26.65 | 1.06 | state |
| Blended | 100% | 1.18 | |||||
Basic, standard or premium: Oregon prices
Bands overlap on purpose, since a good standard job can cost as much as a light premium one. Below are the three bands for the default size, then a grid from bump-out (100 sq ft) to large suite (600 sq ft).
Basic
$43,300 to $61,100
Bump-out or simple room without plumbing
Standard
$56,600 to $74,400
Standard room addition with HVAC and electrical
Premium
$69,900 to $87,700
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $14,800 – $21,100 | $19,500 – $25,900 | $24,300 – $30,600 |
| 20x20 room (400 sq ft) | $57,600 – $81,000 | $75,200 – $98,600 | $92,700 – $116,000 |
| large suite (600 sq ft) | $86,100 – $121,000 | $112,000 – $147,000 | $138,500 – $173,000 |
Home addition cost by metro in Oregon
1 of the 5 metros sit above the statewide midpoint of $65,500, and the top-to-bottom gap is 18%. Each row prices the default size with that metro's own BLS wages and BEA price levels, so the gap between rows is real local variation rather than a flat markup.
| Metro | Range (300 sq ft) | Midpoint | vs. state |
|---|---|---|---|
| Portland, OR | $46,600 – $94,300 | $70,500 | +8% |
| Bend, OR | $42,300 – $85,600 | $64,000 | −2% |
| Salem, OR | $41,100 – $83,200 | $62,200 | −5% |
| Eugene, OR | $41,000 – $83,100 | $62,100 | −5% |
| Medford, OR | $39,500 – $79,900 | $59,700 | −9% |
Why two Oregon quotes can differ
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.
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.
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Detailed home addition report for Oregon, $9
Multi-page report for Oregon: low, typical and high cost, a line-item breakdown of materials and labor by trade, permit notes, the best months to schedule, a quote comparison sheet, red flags, questions for contractors, checklists and every source. 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 Oregon: your questions
+How much does it cost to build a home addition in Oregon?
$43,300 to $87,700 for 300 sq ft, using statewide wages and prices. Metro areas inside Oregon can sit above or below that.
+Which city in Oregon is cheapest for home addition?
Medford at about $59,700 (midpoint, 300 sq ft). The priciest is Portland at $70,500.
+Is home addition cheaper in Oregon than the US average?
It is 14% more expensive: $65,500 against $57,500 for 300 sq ft at the midpoint.
+What share of the price is labor in Oregon?
About 69% ($45,200). Materials are 29%. Statewide labor for this job is weighted 1.18x the national wage level.
+What do carpenters earn in Oregon?
The BLS statewide median is $30.23 an hour, against $29.12 for the US. The 25th to 75th percentile range is $24.26 to $44.89.
+Where does Oregon rank for home addition costs?
8th most expensive of 51 (the 50 states plus DC) at the midpoint, $65,500 for 300 sq ft. Rank 1 is the costliest.
+What do basic and premium home addition work cost in Oregon?
For 300 sq ft, basic work runs $43,300 to $61,100 and premium work $69,900 to $87,700. Basic means: bump-out or simple room without plumbing. Premium means: large addition with bath or kitchen and a new foundation.
+Does the season matter for home addition in Oregon?
Yes where winters or summers are hard. Of the Oregon metros we cover, Portland has the most comfortable months (12 of 12) based on NOAA 1991-2020 normals. Our prices do not change by month, so ask contractors whether they charge more or less in busy and slow seasons.
Home addition by city in Oregon
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.