10 Minute Bids
Design criteria

What Spokane and eastern Washington builds to.

The design numbers each jurisdiction publishes, the ones the trusses, bracing, roofing and plumbing on your plans are drawn to.

Spokane & eastern Washington: published design criteria
WhereSnow loadDesign wind speedSeismic design categoryFrost depthIce barrier requiredWinter design temp.Energy code climate zone
Spokane County39 psf (ground)110 mph—24 inYes10 °F5B
Spokane39 psf (ground)110 mphC24 inYes10 °F5B

Sources: Spokane County: Spokane County Building Dept · Spokane: Spokane Municipal Code 17F.040.105 Design Criteria. 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.

Where

Spokane & eastern Washington towns.

Spokane, Spokane Valley, Liberty Lake, Deer Park, Cheney, Colville. Every area

Questions

Takeoffs in Spokane & eastern Washington

Do you do takeoffs for houses in Spokane?

Yes: any house in Spokane and eastern Washington (Spokane, Spokane Valley, Liberty Lake, Deer Park, Cheney and Colville), and anywhere else. You upload the plan set; nothing has to be built yet.

Which trades can I order?

Metal and shingle roofing, siding, framing, electrical, plumbing, exterior and interior painting, flooring and finish carpentry, one trade or the whole house, all measured off the same 3D model.

Does it cost more in Spokane & eastern Washington?

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.