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20 Years of Service and Quality

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Contact us for your excavation and septic system needs.

Seppanen Construction

Contact us for employment opportunities

Areas We Serve

  • Clark County, WA
  • Battle Ground
  • Camas
  • Hazel Dell
  • Orchards
  • Ridgefield
  • Vancouver
  • Cowlitz County, WA
  • Castle Rock
  • Cougar
  • Kalama
  • Kelso
  • Longview
  • Woodland
  • Yale
A pit with several barrels sitting on top of a sunken, large, septic tank

Septic Systems

When city sewer isn't available homeowners turn to onsite septic systems. There are many types of septic system technology and Seppanen Construction can help you find the right one for your site.

Septic System Services

A closeup of the digger of an excavation machine in front of a pile of dirt

Underground Utilities

Providing underground utility services is just one way that Seppanen Construction provides high-quality services to homeowner and contractor alike.

Underground Utility Services

Get a bid!

Seppanen Construction, LLC
La Center, WA
(360) 263-7950
Washington: SEPPACL974JC