ZIP Code 55803 Construction Cost Estimating & Crew Wage Index (Duluth, MN)
Bid-ready CSI MasterFormat Divisions 01–48 material takeoffs and labor cost estimates calibrated directly to postal code 55803 in Duluth, St. Louis County, Minnesota. Delivered in unlocked Excel + color PDF takeoff layers within 24–48 hours, flat fee from $80.
ZIP 55803 Calibration Card
- Jurisdiction
- St. Louis County
- ZIP Labor Index
- 117.8
- Material Freight Index
- 101.6
- Composite Multiplier
- 1.10x (110.5)
- Coordinates
- 46.8749, -92.0941
ZIP 55803 (Duluth, MN) Burdened Trade Labor & CSI Assembly Rates
Calibrated for Strong Union / Prevailing Wage bidding in St. Louis County (117.8 labor factor).
| CSI Division | Trade & Benchmark Assembly | ZIP 55803 Crew Rate | ZIP Installed Unit Cost | Flat Takeoff Fee |
|---|---|---|---|---|
| Div 26 | Commercial Electrical Distribution & LED Package | $92.47/hr | $21.66/SF | From $85 |
| Div 23 | Packaged VAV RTU + SMACNA Galvanized Ductwork | $88.11/hr | $24.75/SF | From $85 |
| Div 22 | Cast-Iron DWV + Type L Copper Domestic Plumbing | $89.76/hr | $10.83/SF | From $85 |
| Div 03 | 4,000 PSI Footings & Slab-on-Grade w/ Grade 60 Rebar | $76.45/hr | $262.99/CY | From $80 |
| Div 05 | A992 Wide-Flange Structural Steel + Metal Decking | $93.53/hr | $4696/TON | From $90 |
| Div 09 | Metal Stud Framing, Type X Gypsum & ACT Ceilings | $78.34/hr | $11.33/SF | From $80 |
| Div 31 | 3D GPS Mass Grading, Trenching & Select Structural Fill | $84.93/hr | $38.12/CY | From $95 |
MN Building & NEC Code Notes
Minnesota State Building Code (DLI — 2020/2026 MBC, Minnesota Plumbing Code Ch. 4714, strict Climate Zone 6/7 Energy Code).
Site & Environmental Scope Factors
60–84 inch extreme frost footings, hydronic snow-melt aprons, triple-pane/continuous vapor-barrier thermal envelopes, and winter heat costs.
Prevailing Wage Rules in ZIP 55803
Minnesota Prevailing Wage Law (Minn. Stat. §§177.41–44) enforced on state-funded projects >= $2,500 (single trade) / $25,000 (multi-trade).