10 Minute Bids
Whatcom County

The local numbers behind a plumbing bid.

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

Whatcom County: the numbers a plumbing bid depends on
WhereFrost depthWinter design temp.Energy code climate zone
Whatcom County18 in19 °F4C
Bellingham12 in—4C
  • Frost depth: 18 in (Whatcom County). The water service and any outdoor lines run below it.
  • Winter design temperature: 19 °F (Whatcom County). 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: Whatcom County: Whatcom County Ordinance 2024-019 · Bellingham: City of Bellingham Permit Center, BSD #114 'Adopted Codes, Effective M. 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

Same plans, same 3D model

Every trade in Whatcom County.

Add another trade to the same order: each one after the first in the same order is half price. All of Whatcom County · Every area

Questions

Plumbing takeoffs in Whatcom County

Do you do plumbing takeoffs for houses in Bellingham?

Yes. Upload the plan set for a house anywhere in Whatcom County (Bellingham, Ferndale, Lynden, Blaine, Everson and Sumas), or anywhere else. Nothing has to be built yet: we measure the house on the plans.

What design numbers apply in Whatcom County?

Whatcom County publishes frost depth: 18 in; winter design temp.: 19 °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 Whatcom 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.