10 Minute Bids
South King County

The local numbers behind a plumbing bid.

What south King County builds to, and what it means for the takeoff.

South King County: the numbers a plumbing bid depends on
WhereFrost depthWinter design temp.Energy code climate zone
Auburn12 in26 °F4C
Federal Way12 in24 °F4C
  • Frost depth: 12 in (Auburn). The water service and any outdoor lines run below it.
  • Winter design temperature: 26 °F (Auburn). Frost-free hose bibbs, and protection for any pipe in an outside wall or a crawl space.
  • Washington plumbing follows the 2021 Uniform Plumbing Code, not the International Plumbing Code.

Sources: Auburn: City of Auburn · Federal Way: City of Federal Way Community Development, Building Division. Read 2026-09-28. Climate zones: Washington State Energy Code, Table R301.1. Every number is as the jurisdiction publishes it (its design criteria for houses, IRC Table R301.2(1)); a dash means it isn't published. Your lot can differ with elevation and exposure, so confirm it with the building department before you order.

What you get

Every fixture and every run.

The takeoff is built from the model, run by run. Here's what it covers, with the numbers from our example house.

  • Every fixture, read off the plans
  • Drain, waste and vent runs
  • PEX hot and cold runs to each fixture
  • Water service and building sewer
  • A supplier order sheet to save as a PDF and email to your supplier. See a sample

See the full plumbing takeoff on an example house

Questions

Plumbing takeoffs in South King County

Do you do plumbing takeoffs for houses in Renton?

Yes. Upload the plan set for a house anywhere in south King County (Renton, Kent, Auburn, Federal Way, Burien and Tukwila), or anywhere else. Nothing has to be built yet: we measure the house on the plans.

What design numbers apply in Auburn?

Auburn publishes frost depth: 12 in; winter design temp.: 26 °F; energy code climate zone: 4C. The design on your plans should match them, and the takeoff follows your plans. Elevation and exposure can change them for your lot, so confirm with the building department.

Does a takeoff cost more in South King County?

No. The price is the same everywhere, and you see it before you pay. The 3D model is included, and each trade after the first in the same order is half price.

Is this an exact price?

No. It's an estimate built from your plans. Plans don't show code or inspector changes, the existing water and sewer service, or fixtures moved during construction. Anything built differently from the drawings won't be in the bid. We recommend a site visit to confirm measurements and conditions before you sign a contract or order materials.