STACK Construction Technologies — AI for Construction & Civil Engineering Excellence

STACK covers more of the project than takeoff alone. The vendor lists four areas: Evaluate, where you upload plans and specs and AI reads sheets, auto-names pages and flags revisions; Takeoff for linear, area, count and volume quantities with AI auto-counting of symbols and scope suggestions; Estimate, where quantities flow into live estimates with AI pricing checks, item and assembly libraries and regional cost data; and Build, with RFIs, daily reports, photos, markup, punch lists and custom forms. It works in the cloud from any device and has a mobile field app, version comparison and plan markup. Pricing is per user per month and shown only as starting prices: Takeoff & Estimate from $299, Build & Operate from $49 with a two-week free trial, and the Full STACK Platform from $348 through a Build Your Price configurator. The Takeoff & Estimate option mentions a free version, but the page did not state its limits, so check them with the vendor. STACK lists ERP connectors, a STACK for Excel integration with Velixo, an API and a partner network, though the page gives no full integration list. It says thousands of contractors, suppliers and owners use it but gives no exact count. It suits contractors who want estimating and field management under one login; if you only need quick takeoff, the starting price is high.