10 Minute Bids
San Juan Islands

The local numbers behind a siding bid.

What the San Juan Islands builds to, and what it means for the takeoff.

San Juan Islands: the numbers a siding bid depends on
WhereDesign wind speedEnergy code climate zone
San Juan County (unincorporated: Orcas / Eastsound, Lopez, San Juan outside Friday Harbor, other islands)110 mph4C
Friday Harbor110 mph4C
  • Design wind speed: 110 mph (San Juan County (unincorporated: Orcas / Eastsound, Lopez, San Juan outside Friday Harbor, other islands)). Siding and trim are nailed to the maker's schedule for the wind speed, which sets the nail size and spacing.
  • Energy code climate zone 4C: any continuous insulation on the outside of the walls moves the siding out, which changes nail length, trim widths and window and door extensions.

Sources: San Juan County (unincorporated: Orcas / Eastsound, Lopez, San Juan outside Friday Harbor, other islands): San Juan County Community Development · Friday Harbor: Town of Friday Harbor. 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 wall, opening and corner, measured.

Your takeoff is built from the model, not a tape measure. Here's what it covers, with the numbers from our example house.

  • Wall area by elevation, with every opening listed and sized
  • Openings left in the wall area, where they cover the waste
  • Outside and inside corners, in linear feet
  • Starter along the bottom, flashing where roof meets wall
  • A supplier order sheet to save as a PDF and email to your supplier. See a sample

See the full siding takeoff on an example house

Same plans, same 3D model

Every trade in the San Juan Islands.

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

Questions

Siding takeoffs in San Juan Islands

Do you do siding takeoffs for houses in Friday Harbor?

Yes. Upload the plan set for a house anywhere in the San Juan Islands (Friday Harbor, Eastsound, Lopez Island, Deer Harbor and Orcas Island), or anywhere else. Nothing has to be built yet: we measure the house on the plans.

What design numbers apply in San Juan County (unincorporated: Orcas / Eastsound, Lopez, San Juan outside Friday Harbor, other islands)?

San Juan County (unincorporated: Orcas / Eastsound, Lopez, San Juan outside Friday Harbor, other islands) publishes design wind speed: 110 mph; 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 San Juan Islands?

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 pony walls and other framing built in the field under the siding line, or walls changed 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.