Legend-Driven AI Takeoffs for Construction Plans

Setup in minutes. Detection in seconds.

Detect and count thousands of symbols directly from your plan legend — fast, accurate, and fully reviewable.

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Manual symbol counting slows everything down

Estimators spend hours scanning plan sheets and cross‑referencing legends to manually count symbols. Missed items, duplicate counts, and unclear markups create risk, delays, and costly revisions.

Symdex introduces legend‑guided AI detection built specifically for real‑world construction drawings - helping teams move faster with greater confidence.

Upload Plan

Upload your PDF construction drawings in seconds.

Map the Plan Legend

Select symbols from the legend to guide AI detection.

Run Detection

Symdex scans the plan and identifies symbol instances instantly.

Review & Adjust

Quickly validate and adjust detections for full accuracy.