About
STACK is a cloud-based takeoff and estimating platform: contractors upload digital plans, measure quantities, and price them into detailed bids. AI-assisted and manual measurement tools (area, linear, arc, pitched, count, volume) work over a searchable plan-and-spec room with OCR, hyperlinking, version overlay and a measurement-level audit trail, while reusable items, assemblies and templates carry pricing across jobs. Finished estimate and cost data pushes out to accounting, ERP and project-management systems, and an open REST API covers projects, plans, takeoff lists, items, assemblies and quantities. STACK's construction-phase field tools ship separately as Build & Operate.
How teams use it
By audience
- Estimator
- Runs quantity takeoff directly on uploaded PDF/digital plans — area, linear, arc, pitched, count and volume — instead of scaling paper or marking up in a viewer.
- Converts takeoff quantities into a priced estimate in the same tool, adding labor, equipment, waste, overhead, tax and margin without exporting to a separate estimating package.
- Builds and reuses items, assemblies and takeoff templates so a repeat bid type is priced consistently across estimators.
- Uses Plan Overlay to see what changed between drawing revisions before re-bidding, which is where missed revisions become change orders.
- Sends the finished estimate to accounting/ERP (Sage, Acumatica, QuickBooks) rather than rekeying it into a budget.
- General Contracting
- Centralizes bid-set plans, specs and addenda in a searchable plan room with OCR and sheet hyperlinking so the bid team works off one document set.
- Produces internal budget/conceptual estimates to sanity-check subcontractor pricing before award.
- Pulls bid documents in from plan rooms and bid boards (Dodge, Pantera, Procore) so a pursuit starts without a manual download-and-upload step.
- Uses the measurement-level audit trail to see who changed a scale or a quantity when a bid number looks wrong.
- Specialty Contracting
- Trade subcontractors — concrete, drywall, flooring, electrical, mechanical, plumbing, roofing, steel and others — take off their own scope off the GC's plan set and return a priced proposal.
- Autocount finds repeated plan symbols (devices, fixtures, openings) so device-heavy trades stop hand-counting.
- Aerial imagery takeoff measures exterior scope — roofs, paving, site work — without a site visit.
- Custom assemblies encode a crew's own material-and-labor build-ups, which is how a small sub keeps pricing consistent without a trade cost database.
- Owner/Developer
- Runs independent quantity and cost checks against contractor pricing during bid evaluation.
- Produces early order-of-magnitude budgets from concept drawings before a GC is engaged.
- Keeps the bid-phase document set and its versions in one place for the record.
By phase
- Pre-Construction
- Bid/no-bid evaluation: plans and specs are loaded, organized and searched to scope the opportunity before committing estimating hours.
- Quantity takeoff against the bid set, with version overlay catching addenda and drawing revisions.
- Cost estimating and proposal generation — items, assemblies, labor and margin — ending in the number that goes out with the bid.
- Handoff to accounting/ERP once the job is won, so the winning estimate becomes the job budget and cost codes rather than being retyped.
Integrations (11)
| Integrates with | Connection | Details |
|---|---|---|
| NativeSTACK ERP Connector for Acumatica (certified partner, via Acumatica's API) | ||
| NativeSTACK–ediphi connection (via ediphi's API) | ||
| NativeFollowup CRM–STACK document push | ||
| NativeSTACK ERP connector for Oracle NetSuite (via NetSuite's API) | ||
| NativePremier native STACK integration | ||
| NativeSTACK App Integrations — Procore for Preconstruction | ||
| NativeSTACK–QuickBooks Desktop estimating export | ||
| NativeSTACK–QuickBooks Online estimating export | ||
| NativeSTACK–Sage 300 precon-to-financials integration | ||
| NativeSTACK ERP Connector for Sage Intacct | ||
| NativeSmartBid–STACK takeoff & estimating integration |
Only partners listed on AECi appear here. If one is missing, suggest a correction.
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