ZIP Code 02138 Construction Cost Estimating & Crew Wage Index (Cambridge, MA)
Bid-ready CSI MasterFormat Divisions 01–48 material takeoffs and labor cost estimates calibrated directly to postal code 02138 in Cambridge, Middlesex County, Massachusetts. Delivered in unlocked Excel + color PDF takeoff layers within 24–48 hours, flat fee from $80.
ZIP 02138 Calibration Card
- Jurisdiction
- Middlesex County
- ZIP Labor Index
- 125.1
- Material Freight Index
- 103.5
- Composite Multiplier
- 1.15x (115.4)
- Coordinates
- 42.3770, -71.1256
ZIP 02138 (Cambridge, MA) Burdened Trade Labor & CSI Assembly Rates
Calibrated for Strong Union / Prevailing Wage bidding in Middlesex County (125.1 labor factor).
| CSI Division | Trade & Benchmark Assembly | ZIP 02138 Crew Rate | ZIP Installed Unit Cost | Flat Takeoff Fee |
|---|---|---|---|---|
| Div 26 | Commercial Electrical Distribution & LED Package | $98.20/hr | $22.62/SF | From $85 |
| Div 23 | Packaged VAV RTU + SMACNA Galvanized Ductwork | $93.57/hr | $25.85/SF | From $85 |
| Div 22 | Cast-Iron DWV + Type L Copper Domestic Plumbing | $95.33/hr | $11.31/SF | From $85 |
| Div 03 | 4,000 PSI Footings & Slab-on-Grade w/ Grade 60 Rebar | $81.19/hr | $274.65/CY | From $80 |
| Div 05 | A992 Wide-Flange Structural Steel + Metal Decking | $99.33/hr | $4905/TON | From $90 |
| Div 09 | Metal Stud Framing, Type X Gypsum & ACT Ceilings | $83.19/hr | $11.83/SF | From $80 |
| Div 31 | 3D GPS Mass Grading, Trenching & Select Structural Fill | $90.20/hr | $39.81/CY | From $95 |
MA Building & NEC Code Notes
Massachusetts State Building Code (780 CMR), 527 CMR Electrical Code, 248 CMR Massachusetts Uniform Plumbing Code, and Specialized Stretch Energy Code.
Site & Environmental Scope Factors
48-inch frost lines, Back Bay/Seaport slurry-wall & tieback excavation, lab 100% OA heat-recovery systems, and Passive House stretch envelopes.
Prevailing Wage Rules in ZIP 02138
Massachusetts Prevailing Wage Law (M.G.L. c. 149, §§26–27) strictly covers all municipal and state public construction.