Seattle, WA · Updated 2026

How Much Does Septic Repair Cost in Seattle, WA?

Average septic repair costs in Seattle range from $4,740 to $6,414. Get a free, customized estimate below.

30% above national averageFree · No Signup Required

Septic Repair Cost Breakdown — Seattle, WA

ItemUnitQtyUnit PriceTotal
Tank Baffle / Lid Repairlump sum1$585.00$585.00
Drain Field Repairlinear ft60$58.50$3510.00
Labor (excavation)hr12$123.50$1482.00
Estimated Total$5,577.00

* Prices are estimates based on Seattle market rates. Actual costs may vary based on project specifics.

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Labor line 1

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Material line 1

Line total$585

Material line 2

Line total$3,510

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Line total$1,482

Frequently Asked Questions — Septic Repair in Seattle

How much does septic repair cost in Seattle, WA?

The average cost for septic repair in Seattle, WA ranges from $4,740 to $6,414, depending on project scope, materials, and labor rates. Seattle costs are above the national average due to higher labor and material costs in the region.

How do I get a free septic repair estimate in Seattle?

Use Brixor's free online estimate generator above. Enter your project details, customize line items for your specific needs, and download a professional PDF estimate instantly.

What factors affect septic repair costs in Seattle?

Key factors include project size and complexity, material quality, labor rates in Seattle (WA), permit requirements, accessibility of the work area, and seasonal demand. Getting multiple estimates is recommended.