STACK is cloud construction software for AI takeoff, estimating, and field management. Pricing starts at $49 per user per month. See features and pros and cons.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
STACK is a cloud-based construction software platform that covers preconstruction and field work in one system. The company describes it as an AI preconstruction platform where estimating teams complete takeoffs faster, build sharper estimates, and track win-rate growth. The workflow is organized into four stages: Evaluate, Takeoff, Estimate, and Build.
STACK is sold as Takeoff & Estimate, Build & Operate, or a combined Full STACK Platform. Its website says thousands of contractors, suppliers, and owners use it, and it lists specialty contractors, general contractors, suppliers and manufacturers, and owners and developers as its main audiences.
Teams upload plans and specs, and STACK AI reads each sheet, auto-names pages, and flags revisions as they arrive. Takeoff tools measure linear, area, count, and volume quantities, while AI auto-counts symbols and suggests scope that might be missed. A version compare feature overlays drawings to show changes.
Quantities flow into live estimates built in a worksheet style from items and assemblies. The company says AI flags risk, gaps, and pricing drift before a bid goes out. In the field, the same scope and budgets carry into RFIs, daily reports, photos, and markup without rekeying data.
On the preconstruction side, STACK offers AI takeoff, trade-specific item and assembly libraries, and regional cost data for material and labor items inside the platform. STACK for Excel, built with Velixo, connects takeoff and estimating data directly in Excel. ERP connectors are also listed under the Estimate area.
The platform is 100% cloud-based with unlimited viewer seats for marking up plans and sharing estimates. Build & Operate adds mobile plan viewing, custom forms and reports, configurable workflows, and punch lists and issues. The STACK Field App supports on-site markup, daily reports, and performance monitoring.
STACK is a cloud-based construction software platform for preconstruction and field work. It combines AI-assisted takeoff, estimating, plan management, and project tools such as daily reports and punch lists. It serves contractors, suppliers, and owners.
STACK lists Takeoff & Estimate from $299 per user per month, Build & Operate from $49 per user per month, and the Full STACK Platform from $348 per user per month. The prices are shown as "as low as" figures, so the final cost may vary.
The company offers a free version of Takeoff & Estimate. For Build & Operate, it offers a two-week free trial. The sources do not state the limits of the free version.
STACK is aimed at specialty contractors, general contractors, suppliers and manufacturers, and owners and developers. It suits teams that want takeoff, estimating, and field management in one platform.
Named integrations include Acumatica, Autodesk Vault, BidCentral, Dodge Data & Analytics PlanRoom, and Velixo, which powers STACK for Excel. STACK also lists categories such as accounting, CRM, cost data, and project management, and offers API access.
Yes. The STACK Field App lets users mark up and share plans on-site, create daily reports, manage workflows, and monitor punch lists. The platform itself is cloud-based and works on any device.
STACK AI reads uploaded sheets, auto-names pages, and flags revisions. It auto-counts symbols, suggests scope, and checks estimates for risk, gaps, and pricing drift. It also helps organize item and assembly libraries.
The company lists a help content library, live and recorded webinars, in-app chat, and phone and email support from an Account Manager. It also has a training video library and a STACK Community.