CSI Code Lookup

Quickly lookup CSI MasterFormat codes and divisions for construction projects.

Streamline Your Construction Estimating with Instant CSI Code Lookups. Stop flipping through massive PDF manuals or searching through endless browser tabs just to find the right MasterFormat code. The CSI Code Lookup extension is the fastest way for General Contractors, Estimators, and Project Managers to find the exact construction division codes they need, right from their browser. Why Install This Extension? * ⚡ Instant Search: Type any keyword (e.g., "Painting", "Concrete", "HVAC") or division number to see results instantly. * 📚 Comprehensive Database: Includes a massive library of updated CSI MasterFormat Level 2 codes and divisions. * 📋 One-Click Copy: Click any result to copy the code directly to your clipboard—perfect for pasting into estimates, bid packages, or Excel sheets. * 🛡️ Privacy-First & Offline: No tracking, no ads, and works 100% offline. It simply does what it says. Who is this for? * General Contractors building budget proposals and scopes of work. * Subcontractors verifying trade-specific codes. * Architects & Engineers writing specifications. * Construction Students learning the MasterFormat system. Powered by Bid Bench This free tool is brought to you by [Bid Bench](https://www.bidbench.com), the simplest way for General Contractors to create budgets, manage subcontractor bids, and store project files in the cloud. We built this tool because we needed it ourselves—we hope it saves you time too!