Areas We Serve

• Clark County, WA
• Battle Ground
• Camas
• Hazel Dell
• Orchards
• Ridgefield
• Vancouver
• Wahkiakum County, WA
• Cathlamet
• Grays River
• Puget Island

• Cowlitz County, WA
• Castle Rock
• Cougar
• Kalama
• Kelso
• Longview
• Ryder
• Woodland
• Yale
• Skamania County, WA
• North Bonnevile
• Stevenson

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

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

Excavation

Whether it's a new house, an inground pool or a drainage ditch, we've got the equipment to do the job and do it well. Our experience and expertise combine to provide professional services to you.

Excavation/Site Work Services