Septic Tank Replacement Cost in Portland, OR
In Portland, OR, septic tank replacement costs about $8,400 for one tank and drain field work, with most jobs from $3,920 to $16,800. That is 12% above the national typical price of $7,500.
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Septic Tank Replacement price range in Portland
| Low | Typical | High | |
|---|---|---|---|
| Price in Portland | $3,920 | $8,400 | $16,800 |
| US national price | $3,500 | $7,500 | $15,000 |
| Difference | +$420 | +$900 | +$1,800 |
Prices in Portland also shift with the season; busy months cost more. Local cost index used: 1.12 (1.00 is the US average).
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What affects the price in Portland
- House or job size
- Material and quality grade
- Local labor rates
- Permits and inspections
The price covers one tank and drain field work. Typical project time is 2 to 5 days. Expected life: 20 to 40 years.
How to get a fair price in Portland
- Collect at least three written quotes from licensed and insured Oregon contractors.
- Ask for the price split into labor, materials and permits.
- Check licenses with the Oregon state licensing board.
- Pay in stages tied to finished work, not all up front.
Frequently asked questions
How much does septic tank replacement cost in Portland?
About $8,400, with a typical range of $3,920 to $16,800 for one tank and drain field work.
Is septic tank replacement more expensive in Portland than average?
It is 12% above the national typical price.
Does the price include permits?
Sometimes. Ask your contractor whether permits, disposal and cleanup are in the quote.
Sources and method
- Bureau of Economic Analysis: regional price parities
- U.S. Bureau of Labor Statistics: Occupational Outlook Handbook
- Prices are modelled estimates, not quotes
Page last updated November 2026. See our editorial policy and disclaimer.