Upload a floor plan or describe your project in plain text — Constack uses AI to generate complete CSI estimates, CPM schedules, and procurement lists in minutes.
16
CSI Divisions Covered
<5 min
From Floor Plan to Estimate
CPM
Critical Path Scheduling
AI
AI-Powered Platform
How It Works
Four AI-powered steps that take your project from intake to a procurement-ready package — without a single spreadsheet.
Drop in a PDF or image of your floor plan, or simply describe the project in plain text. Our AI extracts square footage, floors, building type, and key spaces automatically.
Receive a fully-itemized cost estimate in CSI MasterFormat 1995 (Divisions 01–16) with quantities, unit costs, and subtotals. Edit any line item directly in the browser.
AI converts your estimate into a Critical Path Method schedule with phases, dependencies, float, and Gantt chart. Edit durations and watch the critical path update in real time.
Get a prioritized procurement schedule with lead times, Order-By dates, and Purchase Order / Subcontractor Contract classifications — so nothing falls through the cracks.
Why Constack
Whether you run a boutique residential firm or manage multi-million-dollar commercial projects, Constack scales with you.
Turn what used to take days of spreadsheet work into a 5-minute AI-powered workflow. Go from floor plan to full CSI estimate before your next coffee.
Every estimate follows the industry-standard CSI Division structure that owners, architects, and lenders already expect — ready to share immediately.
AI builds a full Critical Path Method schedule from your estimate — phases, dependencies, float, and Gantt chart — without a single manual drag.
Never miss a material order again. Constack calculates Order-By dates from schedule activities and flags urgent items before they become critical delays.
Trusted by Industry Leaders
We build alongside the contractors who'll use it every day — not in a vacuum.
Most tools we have evaluated treat preconstruction as a generic data-entry exercise. Constack does not. It generates results that reflect how an experienced general contractor actually thinks about a project.
Calibrated to regional conditions, quality tier, and the specific operational practices of the firm using it — its ability to learn from each completed project is what will set it apart over time.
Purpose-Built for Construction
Join GC firms using Constack to win more bids, reduce cost overruns, and deliver projects on time — backed by AI trained on real construction data.
Start Your First Project — It's Free