STACK

Summary

STACK is a cloud-based construction software suite that spans preconstruction, estimating, document control, field collaboration, and project closeout. The product is built around a bid-to-build workflow: teams can organize plans, run takeoff and estimating, then hand the work into a field and office collaboration layer for issues, punch lists, daily reports, and change orders. That makes it a strong fit for specialty contractors and general contractors that want one construction platform rather than a service-dispatch FSM tool.

The company positions STACK around fast bids and profitable projects, and the site now shows unusually clear public pricing for the category. STACK’s takeoff suite starts at $249/user/mo billed annually, while the Build & Operate suite starts at $599/user/year, with custom Build Your Own subscriptions also available.

Pricing & Plans

STACK publishes multiple pricing paths rather than one flat list price.

• Takeoff & Estimate: Premium starts at $249/user/mo billed annually; Pro starts at $299/user/mo billed annually.
• Build & Operate: Essential starts at $599/user/year; Pro starts at $699/user/year.
• Build Your Own: custom subscription built around the team’s needs.
• Billing toggle: annual billing is shown as the default on the takeoff pricing page, with a 20% savings note for annual billing.

That structure is clearer than most enterprise construction vendors, but it still forces buyers to choose the right suite before they know their final spend. Teams that only need takeoff and estimating can stay in the lower-priced track, while teams that need office-field collaboration, issue tracking, and project workflows need to budget for the higher Build & Operate plans.

Key Features

• Cloud takeoff with linear, arc, area, count, 2D/3D volumes, pitched-area, and cutout tools.
• AI plan helpers: symbol search, automatic plan organization, automatic plan naming, and STACK Assist chat.
• Integrated estimating with item and assembly libraries plus exportable proposals.
• Unlimited projects, documents, sheets, and viewer seats in the takeoff suite.
• Document control with folder organization, version compare, hyperlinks, search, thumbnails, and concurrent viewing.
• Build & Operate workflows for ASIs, PCOs, change orders, issues, punch lists, QA/QC, daily reports, and meetings.
• Mobile access on iOS, Android, and Windows Mobile for field markup, sharing, and collaboration.
• Enterprise controls: roles-based security, SSO, MFA, SOC 2 Type 2, API access, and real-time collaboration.
• STACK for Excel / Velixo integration for estimating workflows.

Integrations

STACK is lighter on named native integrations than some platforms, but the official site does confirm two important paths: API access and STACK for Excel / Velixo. That makes it a better fit for teams that want to extend the platform or connect it into an existing estimating workflow than for buyers looking for a giant app marketplace.

Industries Served

STACK says it serves:

• Specialty contractors across trades like concrete, drywall, painting, mechanical, and electrical
• General contractors
• Material manufacturers
• Project owners and developers

That mix reinforces STACK’s position as a construction operations platform rather than a single-trade or service-dispatch tool.

Pros

• Published pricing is more transparent than most construction suites.
• Strong preconstruction tools: takeoff, estimating, plan organization, compare, and markup.
• Broad bid-to-build coverage includes field collaboration and closeout tools.
• Enterprise-ready controls such as SSO, MFA, SOC 2 Type 2, and API access.
• A real Excel integration path via STACK for Excel / Velixo helps teams that live in spreadsheets.

Cons

• The fuller Build & Operate suite still needs sales-led scoping for larger teams.
• STACK is not a service-dispatch FSM tool, so it is a poor fit for recurring-service HVAC/plumbing shops.
• Costs can rise quickly when a team moves beyond takeoff-only use into the collaboration suite.
• Some of the most advanced AI takeoff capabilities appear as higher-tier features or add-ons.

Sources/References

• STACK homepage
• STACK about us
• STACK pricing
• STACK takeoff and estimate pricing
• STACK build and operate pricing
• STACK build your subscription
• STACK developers / API access
• STACK FAQ
• STACK on LinkedIn