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Upload IFC or Revit. Every quantity linked to its source element. Compare versions. Detect anomalies. Export anywhere — the connection to the model never breaks.

Try with your model →

▶ Watch 90-sec demo

Trusted by QS teams across UK, Australia & UAE

The problem

BIM models are everywhere Using them for quantities is still manual

50–80%

of all estimation time is spent on quantification alone —
not analysis, not strategy. Just measuring.

The model exists
The QTO doesn't

73% of firms use BIM. Most QS teams still extract quantities manually from 2D drawings — even when the 3D model is available.

Every export breaks
the connection

CostX, ACC Takeoff, Navisworks — all output a static file. Once exported, your quantities have no idea where they came from.

Design revision 4
means QTO revision 4

No tool tracks what changed between model versions and shows you the quantity impact. Every revision is a full re-measurement.

"The gap between your BIM model and a trusted scope decision
is still bridged by hand"

The product

What you see when you open Qolo

Download to Excel, CSV, JSON, or push directly to CostX. Every row includes Element IDs — so any quantity can always be traced back to its source element in the model.

Drag & drop IFC or RVT. Connect from Autodesk Docs or Trimble Connect. Qolo parses model hierarchy, geometry, and parameters. Works with imperfect models — shows you what it found and what it couldn't classify.

Upload any BIM model

Every element in your BIM model is linked to its quantity data. Click in 3D — the table updates. Click the table row — the element highlights in 3D. Compound elements like walls are decomposed into their individual material layers automatically.

Click the element
Read its quantities

Filter by floor level, discipline, category, or any model parameter. Group on the fly. Aggregate quantities across selections. The 3D view updates in sync — see only the elements you're analysing.

Drill into the data

Load two model versions. Qolo shows added, removed, and modified elements — colour-coded in 3D. The delta table gives you quantity differences immediately. No re-measurement. Just a clear, auditable change log.

Design changed
Know exactly what

Export without losing
the context

Capabilities

Everything you need to go from model to decision

Interactive Quantity TakeOff

Quantities permanently linked to model elements. Click in 3D. Click in the table. The connection never breaks — not during filtering, not after export

Compound element decomposition (layers, assemblies)
Real-time grouping by category, level, type
Drill-down from assembly to individual element
Full parameter set accessible per element

Version Comparison & Change Tracking

Compare any two model versions. Added, removed, and modified elements colour-coded in 3D. Quantity delta table ready in minutes — not a re-measurement

Visual diff on 3D model
Quantity delta: what changed and by how much
Exportable change report for client review
Works with IFC snapshots — no live model required

Validation & Anomaly Detection

Qolo analyses your model for quantity-related anomalies before they reach your estimate. Missing parameters, duplicates, outliers, incomplete geometry — surfaced clearly

Missing or null parameter detection
Duplicate element flagging
Outlier quantity detection
Classification coverage report

Flexible Quantity Analysis

Group by floor, discipline, type, or any custom model parameter. Filter on any value. Aggregate on the fly. Not a static spreadsheet — a dynamic model-driven workspace

Multi-level grouping and aggregation
Filter by any IFC parameter
Saved views for team sharing
Side-by-side 3D and table view

Process

Three steps No setup No mapping templates

Explore and analyse

Navigate the 3D model and quantity data simultaneously. Click elements to inspect quantities. Filter by level, category, or parameter. Compare versions. Detect anomalies.

Import IFC or Revit from your device, or connect directly from Autodesk Docs or Trimble Connect. Qolo processes the model hierarchy, geometry, and parameters automatically.

Upload your model

Export anywhere

Export to Excel, CSV, or JSON. Send directly to CostX or your estimating workflow. Every row includes Element IDs — full traceability maintained after export.

No mapping templates required. If Qolo can't classify an element, it tells you — so you decide what to do with it

Built for your role

Every team in the quantity workflow

For Quantity Surveyors

"I need a BOQ from this IFC in 3 days for a tender."

Extract structured quantities from IFC in hours, not weeks
Every number traces back to a model element — fully defensible
Detect what the model doesn't contain before you rely on it
Export output structured for your estimating workflow
Update instantly when design changes — delta, not full re-measure

See QS workflow →

For Cost Engineers

"Design changed again — how long will re-measurement take?"

Know exactly how a design revision impacts scope and quantities
Stop re-measuring from scratch after every design update
Independent quantity validation against sub-contractor proposals
Structured data ready for your cost model or ERP
Auditable change log across all model versions

See CE workflow →

For BIM Managers

"I need a BOQ from this IFC in 3 days for a tender."

Verify the model is QTO-ready before handing to the QS
Identify missing parameters, duplicate elements, unclassified geometry
Deliver models with confidence quantities will extract correctly
Make the BIM deliverable mean something for cost workflows
Classification coverage report: % fully resolved vs. needs review

See BIM Manager workflow →

For Main Contractors

"How do I know the sub's quantities are correct?"

Independent quantity check against tender figures
Early-stage scope validation from partial design models
Track scope changes across all design iterations
Shared quantity views for subcontractors and procurement
No desktop installation — browser-based, shareable by URL

See Contractor workflow →

4 847

BIM models processed

120

QS & cost engineering teams

68 hrs

Saved per project on average

James Mitchell

Senior BIM Manager · Arcadis, London

"We used to condition an IFC for two full days before the QS could even start. Qolo showed us what was in the model and what wasn't — in 20 minutes. That's not a claim, that's last Tuesday."

Sarah Reynolds

Associate QS · Turner & Townsend, Sydney

"The version comparison alone saved us a week of re-measurement on a hospital project. We loaded both IFC issues, got the delta in minutes, and the client had an updated cost plan the same afternoon."

Read case study →

Case study

Commercial Office Tower
18,000 m² · London

14 days
→

Manual
→

0 flags
→

6 hours

Minutes

12 issues

QTO from IFC

Per design revision

Model anomalies caught

Integrations

Works with the tools you already use

Qolo is a quantity intelligence layer — not a replacement for your BIM authoring or estimating tools. IFC support means any BIM tool works with Qolo, not just Autodesk.

BIM Input

RVTAutodesk Revit