USPS ZIP 19801
Wilmington · New Castle County, DE
ZIP Code 19801 Construction Cost Estimating & Crew Wage Index (Wilmington, DE)
Bid-ready CSI MasterFormat Divisions 01–48 material takeoffs and labor cost estimates calibrated directly to postal code 19801 in Wilmington, New Castle County, Delaware. Delivered in unlocked Excel + color PDF takeoff layers within 24–48 hours, flat fee from $80.
ZIP 19801 Calibration Card
- Jurisdiction
- New Castle County
- ZIP Labor Index
- 110.5
- Material Freight Index
- 102
- Composite Multiplier
- 1.07x (106.7)
- Coordinates
- 39.7378, -75.5497
ZIP 19801 (Wilmington, DE) Burdened Trade Labor & CSI Assembly Rates
Calibrated for Mixed Union & Merit-Shop bidding in New Castle County (110.5 labor factor).
| CSI Division | Trade & Benchmark Assembly | ZIP 19801 Crew Rate | ZIP Installed Unit Cost | Flat Takeoff Fee |
|---|---|---|---|---|
| Div 26 | Commercial Electrical Distribution & LED Package | $86.74/hr | $20.91/SF | From $85 |
| Div 23 | Packaged VAV RTU + SMACNA Galvanized Ductwork | $82.65/hr | $23.90/SF | From $85 |
| Div 22 | Cast-Iron DWV + Type L Copper Domestic Plumbing | $84.20/hr | $10.46/SF | From $85 |
| Div 03 | 4,000 PSI Footings & Slab-on-Grade w/ Grade 60 Rebar | $71.71/hr | $253.95/CY | From $80 |
| Div 05 | A992 Wide-Flange Structural Steel + Metal Decking | $87.74/hr | $4535/TON | From $90 |
| Div 09 | Metal Stud Framing, Type X Gypsum & ACT Ceilings | $73.48/hr | $10.94/SF | From $80 |
| Div 31 | 3D GPS Mass Grading, Trenching & Select Structural Fill | $79.67/hr | $36.81/CY | From $95 |
DE Building & NEC Code Notes
County/municipal IBC & IECC adoption across New Castle, Kent, and Sussex counties; statewide Delaware Electrical Inspection.
Site & Environmental Scope Factors
Coastal FEMA VE/AE flood-elevation pilings along Atlantic beaches and Mid-Atlantic freeze-thaw exterior masonry detailing.
Prevailing Wage Rules in ZIP 19801
Delaware Prevailing Wage Law (29 Del. C. §6960) applies to public construction > $500K new or > $45K renovation.
Order a ZIP 19801 Takeoff in Any of Our 22 CSI Trade Divisions
General Construction
Electrical
Mechanical
HVAC
Plumbing
MEP Combined
Fire Protection
Concrete
Masonry
Structural Steel
Carpentry & Wood
Roofing & Siding
Drywall & Insulation
Flooring
Painting & Coatings
Doors, Windows & Glazing
Excavation & Sitework
Civil & Infrastructure
Landscaping & Hardscape
Specialty & Technology
Demolition & Restoration
Industrial & Process