STACK Review:
Is It Worth It in 2026?

What Is STACK?

Overview

STACK is a cloud-based construction takeoff and estimating platform that helps contractors, subcontractors, and estimating teams measure quantities from digital drawings and build cost estimates in a collaborative, browser-based workspace. Founded before the current wave of AI construction tools, STACK established itself as a practical digital replacement for paper-based or spreadsheet-based takeoff workflows, with a strong focus on ease of use and team collaboration.

The platform covers the core preconstruction workflow: uploading drawings, performing digital measurements, applying pricing from cost databases or custom assemblies, and organizing completed estimates into bid packages. Its cloud-based architecture makes it particularly useful for teams collaborating across locations or managing bid volume that exceeds what a single estimator can handle alone.

This review evaluates STACK based on its takeoff capabilities, collaboration features, and practical fit for construction estimating workflows in 2026.

Key Features

Digital Takeoff Tools

STACK provides a full set of digital measurement tools — linear, area, count, and volume — applied directly to uploaded PDF drawings in the browser, replacing the manual process of scaling and measuring paper prints with faster, more accurate digital measurement.

Cloud Collaboration

The platform's cloud-based architecture allows multiple estimators to work on the same project simultaneously, share takeoffs with project owners or subcontractors, and maintain a single version of each estimate without managing file versions.

Cost Database Integration

STACK integrates with industry cost databases and allows teams to build custom cost assemblies, enabling a workflow from quantity measurement to fully priced estimate within the same platform.

Bid Management

Beyond individual estimates, STACK includes bid management features for tracking invited subcontractors, managing proposal deadlines, and organizing the full bid package for a project.

Pros & Cons

Pros

• ✅ Cloud-based platform enables real-time collaboration on takeoffs and estimates across teams
• ✅ Digital takeoff tools significantly faster than manual measurement on paper drawings
• ✅ Cost database integrations allow moving from quantity measurement to cost estimate in one workflow
• ✅ Bid management features help track and organize multiple concurrent project bids

Cons

• ❌ AI automation is less advanced than newer AI-first takeoff tools like Kreo or Togal AI
• ❌ Feature depth may exceed what smaller contractors or single-person estimating operations need
• ❌ Pricing can be a barrier for smaller subcontractors who bid a limited number of projects
• ❌ Learning curve for teams transitioning from spreadsheet-based or paper-based estimating

Who Is It Best For?

STACK is the right tool if you:

• Manage multiple concurrent bids and need a shared, cloud-based estimating workspace for your team
• Want to replace paper or spreadsheet takeoff with a purpose-built digital platform
• Need bid management features alongside takeoff — not just measurement, but full bid organization
• Collaborate across locations and need estimators to work on the same project simultaneously

STACK is not the right tool if you:

• Want AI-automated takeoff that reduces measurement time further than digital tools alone
• Are a very small contractor who bids a handful of projects per year where the investment doesn't pay off
• Need deep project management features beyond preconstruction estimating

Alternatives to Consider

• Kreo — AI-powered takeoff with more automation for quantity extraction from drawings
• Togal AI — AI-first takeoff tool focused on automated measurement from 2D drawings
• PlanSwift — established desktop takeoff software with a large contractor user base
• Buildxact — estimating platform targeting smaller construction businesses with simpler pricing
• ProEst — cloud estimating platform with stronger project management integration for larger contractors

Final Verdict

STACK occupies a solid position in the construction estimating software market — more capable and collaborative than spreadsheet-based approaches, more accessible and affordable than heavy enterprise systems. For contractor teams that have outgrown manual workflows but aren't ready for the complexity or cost of enterprise construction software, it's a practical upgrade.

As AI-first takeoff tools mature and close the price gap, STACK's relative lack of AI automation becomes more notable. But for teams whose primary need is digital measurement and collaborative estimating rather than full AI automation, it remains a dependable platform.

Our recommendation: Evaluate STACK alongside one AI-first takeoff tool like Togal AI on the same set of test drawings — the comparison will reveal whether the AI automation savings justify the switch, or whether STACK's broader estimating workflow features better match your team's needs.

Key Features

Best For

Pros & Cons

STACK vs Top Alternatives

Tool	Best For	Price	AI Quality	Features	Support	Ease of Use	Rating
STACK	General contractors managing multiple concurrent bids who need a shared estimating platform	From $2,599/year					8.6/10	Current
Kreo	Construction	Contact for pricing					8.1/10	Read Review →
Togal AI	Construction	Contact for pricing					7.8/10	Read Review →
PlanSwift	Construction	Contact for pricing					7.5/10	Read Review →
B Buildxact	Construction	Contact for pricing					7.2/10	—

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