Meet David — The Plumber Behind Timberline Plumbing

From Apprentice to Owner

I'm David Rumpel, owner of Timberline Plumbing. If you call or fill out a form on this site, I'm the one who actually sees it — not a dispatcher, not a call center.


I started in this trade from the bottom, as an apprentice on a 256-unit, 55-and-over apartment complex in Smokey Point, Arlington. I learned by paying attention — listening to the plumbers around me who'd been doing this far longer than I had, and applying what I picked up every day on the job. That's still how I run things now: pay attention, do it right, and don't cut a corner just because no one would notice right away.



Timberline Plumbing is the new name for what was Seattle's Plumbing LLC — same license, same standards, and a brand built around how I actually want to run this business: quality over quantity, not volume over care.

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Where you'll find us:

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Seattle — every neighborhood, not just the ones nearest to us

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Bothell & Brier — home turf

Kirkland & Bellevue

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Kenmore & Lynnwood

Redmond & Sammamish

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Edmonds & Mukilteo

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Issaquah

If your address falls anywhere on that map, you're not a stretch for us — you're exactly who we built this for.

Licensed, Certified, and Held to a Higher Standard

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Commercial Plumbing License

Qualifies me to work on large-scale commercial projects, restaurants, and public works, not just residential homes — even though residential is where Timberline Plumbing focuses.

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Certified Navien Tankless Technician

A manufacturer-specific certification for tankless water heater installation and repair. (Worth cross-referencing on the Water Heater Installation page too — it's a concrete credential that page currently doesn't name.)

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Ongoing Code Education

Regular continuing-education and code-update courses alongside local and state inspectors, so the work reflects current Washington plumbing code — not just "up to code when it was installed."

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Quick Facts

  • Who owns Timberline Plumbing?

    Timberline Plumbing is owned and personally operated by David Rumpel, a licensed plumber based in Brier, Washington.

  • Is Timberline Plumbing licensed?

    Yes. David holds a commercial plumbing license, which also covers residential work, along with manufacturer certification as a Navien tankless technician.

  • Was Timberline Plumbing previously known by another name?

    Yes. Timberline Plumbing was formerly Seattle's Plumbing LLC, operating under the same license and ownership.

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Have a plumbing project or a question before you book one? I'd rather hear about it directly.