Construction Estimating & Material Takeoffs in Seattle, WA
Win more residential, commercial, civil, and industrial bids in Seattle, Washington (King County) with CSI Divisions 01–48 quantity takeoffs calibrated to local ZIP 98101 crew wages (112.5 cost index). 24–48 hour delivery, flat fee from $80.
Seattle Bid Metrics
- Primary USPS ZIP
- 98101
- City Labor Index
- 119.3
- Material Index
- 104.1
- Composite Index
- 112.5
- GPS Reference
- 47.611, -122.331
Seattle, WA Calibrated Construction Assembly Benchmarks
Installed commercial cost benchmarks adjusted by Seattle’s 1.12x local composite multiplier.
| CSI Code | Commercial Construction Assembly | Unit | Seattle Installed Rate | Trade Takeoff Link |
|---|---|---|---|---|
| 03 30 53 | 6" Reinforced Industrial Slab-on-Grade (4,000 PSI + Vapor Barrier) | SF | $8.94 / SF | Concrete Takeoff |
| 05 12 23 | ASTM A992 Structural Wide-Flange Framing (Fab + Erected) | TON | $4781 / TON | Steel Takeoff |
| 07 54 23 | 60-Mil TPO Roof System + R-30 Polyiso Tapered Insulation | SQ | $1001 / SQ | Roofing Takeoff |
| 09 29 00 | 1-Hr UL Metal Stud & 5/8" Type X Drywall Partition (Level 4) | SF | $11.53 / SF | Drywall Takeoff |
| 23 31 13 | SMACNA 2" WG Galvanized Rectangular HVAC Ductwork | LB | $8.83 / LB | HVAC Takeoff |
| 26 05 33 | Commercial 480V Power Distribution, EMT Conduit & LED Package | SF | $22.05 / SF | Electrical Takeoff |
Seattle Code & Permitting Context
Washington State Building Code + Washington State Energy Code (WSEC — strictest commercial heat-pump space/water heating rules in the US) + Seattle Director's Rules.
Puget Sound Seismic Category D deep soldier-pile shoring, building-envelope rainscreen air-barrier testing, and Central WA clean-hydro data centers.
King County Labor & Active Sectors
Washington L&I Prevailing Wage (RCW 39.12) applies strictly to ALL public works and public building service maintenance.