Field Mowing

We now provide field mowing in Clark and Cowlitz County! Give us a call to get your field mowed for the summer.

What is a perc test?

Test pits (commonly called perc holes) are needed to determine what type of soils are at your property and to determine the depth to the restrictive layer. We do not provide the soils analysis aka “perc testing”, but we can…

Where do I get a Septic System Design?

In order to get a bid from us, you’ll need to have a septic system design. If you’re looking for good septic system designer, please visit the links below, or contact us for referrals. Clark County (PDF). Cowlitz County.

Do you do Septic System pumping?

Does your septic tank need to be pumped? Seppanen Construction, LLC does not offer septic tank pumping. We’re happy to offer a recommendation for this task. Visit the county of your residence below for more information. Clark County (PDF). Cowlitz…

The county said I need a septic system inspection. Do you inspect septic systems?

Seppanen Construction, LLC is certified to install septic systems and does not currently offer inspection services. Please contact us if you need help finding someone to inspect your septic system, or visit the site for the county of your residence…

New Construction Site

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Rod Installing

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Complete Sites

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Unique design

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Underground

Here in the Northwest, having good and reliable underground utilities is critical. Seppanen Construction will look to accomplish that for you, whether it be through gas trenching, installing a water line, or any of our many underground services. There are…

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