Automated Quantity Take-off | Multi-Level Validation | BIM Takeoff
Automated Quantity Take-off with Multi-Level Validation
Precision Measurement at 10x the Speed
95% faster than manual take-offs.
Triple-validated for complete accuracy.
AI-Powered Extraction - Automated measurement from BIM models
Triple Validation System - AI + Expert + Cross-Reference
99.5% Accuracy - Backed by 20 years experience
Why Traditional Take-offs Cost You Time & Money
Manual Take-off Problems
Traditional measurement methods are slow, error-prone, and expensive:
4-6 weeks for complex projects
Human error in measurements (5-15%)
Missed quantities and elements
Inconsistent measurement standards
Design changes require complete re-measurement
Difficult to verify and audit
The Cost of Errors
“On a £10M project, even a 5% quantity error can result in £500,000 in unexpected costs or contractor claims. Manual take-offs simply cannot deliver the precision modern construction demands.”
Our Automated Solution
Advanced AI-powered extraction with multi-level validation:
2-3 days for complete take-off
99.5% accuracy with triple validation
Complete element capture (no missed items)
ISO 19650 compliant measurement
Instant updates for design changes
Full audit trail and documentation
Our Triple Validation System: Unmatched Accuracy
Why Three Validation Levels?
Construction projects cannot afford measurement errors. Our proprietary triple validation system ensures every quantity is verified through multiple independent processes, catching errors that single-validation systems miss.
Level 1: AI Extraction
Automated BIM Analysis
Our AI algorithms automatically extract quantities from your BIM model:
- Pattern recognition for element identification
- Automated measurement calculations
- Clash detection and resolution
- Duplicate element removal
- Version control tracking
Accuracy: 98%
Duration: 1-2 hours
Level 2: Expert Review
Human Verification
Experienced Quantity Surveyors manually review AI outputs:
- Cross-check against 2D drawings
- Validate measurement methodologies
- Identify missing elements
- Apply construction knowledge
- Verify unit conversions
Accuracy: 99.2%
Duration: 4-8 hours
Level 3: Cross-Reference
Independent Verification
Final validation against multiple sources:
- Compare with historical project data
- Benchmark against industry standards
- Verify with specification documents
- Check material relationships
- Final QA sign-off
Final Accuracy: 99.5%+
Duration: 2-4 hours
Result: Each quantity is verified three times by independent systems, ensuring you receive the most accurate Bill of Quantities in the industry.
Our Proven 4-Step Process
Step 1: Model Ingestion & Preparation
Duration: 4-6 hours
What We Do:
- Receive BIM model (IFC, Revit, ArchiCAD, Tekla)
- Validate model completeness and integrity
- Check element classifications and properties
- Identify any data gaps or inconsistencies
- Configure measurement parameters
What You Receive: Model validation report with any issues flagged
Step 2: Automated Extraction (Validation Level 1)
Duration: 1-2 hours (automated)
What We Do:
- AI-powered quantity extraction from BIM model
- Automated measurement calculations
- Element classification and grouping
- Clash detection and duplicate removal
- Generate preliminary Bill of Quantities
What You Receive: Preliminary BOQ with automated measurements
Step 3: Expert Review (Validation Level 2)
Duration: 4-8 hours
What We Do:
- Quantity Surveyor manual verification
- Cross-check with 2D drawings
- Apply construction industry standards
- Identify and add missing elements
- Validate measurement methodologies
- Apply project-specific requirements
What You Receive: Expert-reviewed BOQ with quality assurance notes
Step 4: Cross-Reference & Final QA (Validation Level 3)
Duration: 2-4 hours
What We Do:
- Compare with historical project data
- Benchmark against industry standards
- Final specification document verification
- Senior QS sign-off
- Generate comprehensive documentation
- Prepare audit trail and commentary
What You Receive: Final validated BOQ with complete documentation and audit trail
Total Timeline: 12-20 working hours
Total Project Duration: 2-3 days from model receipt to final delivery
What’s Included in Your Bill of Quantities
Standard Deliverables
Every automated take-off includes:
Detailed Bill of Quantities (Excel format)
3D Visual Markup showing measured elements
Measurement Commentary explaining methodologies
Validation Reports from all three levels
Complete Audit Trail for verification
Element Schedule with properties and attributes
Assumption Log documenting any assumptions
Optional Add-ons
Enhance your take-off with:
Cost Estimation - Apply rates to quantities
Schedule Integration - Link quantities to program
Tender Documentation - Prepare BOQ for bidding
Value Engineering - Identify cost savings
Material Waste Analysis - Calculate wastage factors
Custom Formatting - Match your template requirements
Ongoing Updates - Track design changes over time
Industries & Project Types We Serve
Commercial Buildings
Office complexes, retail centers, mixed-use developments, hospitality projects
Healthcare Facilities
Hospitals, medical centers, aged care facilities, specialist clinics
Residential Developments
Multi-family housing, apartment complexes, townhouse developments
Industrial & Logistics
Warehouses, distribution centers, manufacturing facilities, cold storage
Education & Institutional
Universities, schools, libraries, government buildings, civic centers
Infrastructure Projects
Transport hubs, utilities, public works, civil engineering projects
Supported File Formats & Software
We Work With Your Existing Workflow
BIM Software
- Autodesk Revit
- ArchiCAD
- Tekla Structures
- Bentley MicroStation
- Vectorworks
File Formats
- IFC 2x3 / IFC 4
- Revit (RVT)
- DWG / DXF
- PDF (with dimensions)
- Point Clouds (if needed)
Export Formats
- Excel (XLSX)
- CSV
- PDF Reports
- BCF (for markups)
- Native BIM formats
Integration
- MS Project
- Primavera P6
- CostX / Vico
- Procore / BIM 360
- Custom APIs
Don’t see your software? We work with virtually any BIM or CAD platform. Contact us to discuss your specific requirements.
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Frequently Asked Questions
Q: What if my project doesn’t have a BIM model?
A: We can work with 2D drawings (DWG, PDF) but timelines will be significantly longer as we’ll need to extract quantities manually. For best results and fastest turnaround, we recommend using BIM models or consider our BIM modeling services to convert your 2D drawings first.
Q: How accurate is your triple validation system?
A: Our triple validation system achieves 99.5%+ accuracy when the source BIM model is complete and accurate. Each quantity is independently verified three times (AI extraction, expert review, cross-reference), ensuring the highest level of precision in the industry. We provide complete audit trails for all measurements.
Q: What happens if the design changes during the project?
A: That’s the beauty of BIM-based take-offs! We can quickly update quantities based on the revised model - typically within 4-8 hours rather than weeks for manual re-measurement. We offer ongoing update services at discounted rates for active projects.
Q: Do you comply with international measurement standards?
A: Yes, we comply with RICS New Rules of Measurement (NRM), ISO 19650 BIM standards, and can adapt to local standards including Polish KNR, Australian AIQS, or any other regional requirements. Our Quantity Surveyors are experienced with international projects.
Q: Can you handle large, complex projects?
A: Absolutely. We’ve successfully completed take-offs for projects ranging from small renovations to 100,000+ sqm developments. Our AI-powered system actually performs better on larger projects where manual take-offs would be prohibitively time-consuming. Complex projects may require 3-4 days instead of 2-3.
Q: What level of detail (LOD) do you need in the BIM model?
A: We can work with LOD 300 and above for most projects. LOD 350-400 is ideal for detailed trade-specific take-offs. If your model is at LOD 200, we can still extract useful quantities but may need to supplement with 2D drawings for detailed measurements.
Q: Do you provide take-offs for specific trades or disciplines?
A: Yes! We can extract quantities for any trade: structural (concrete, steel, masonry), architectural (finishes, doors, windows), MEP (mechanical, electrical, plumbing, fire protection), civil works, and specialized systems. We tailor the BOQ format to match your trade requirements.
Q: How do you handle model inconsistencies or errors?
A: This is exactly why we use triple validation. Our Level 1 AI identifies clashes and duplicates automatically. Level 2 expert review catches model errors and cross-checks with 2D drawings. Level 3 verification ensures logical consistency. We document all assumptions and flag any areas of concern for your review.
Q: What’s your pricing structure?
A: Each project is assessed individually based on project size, complexity, level of detail required, and specific deliverables. Contact us with your project details for an accurate quote within 24 hours.
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99.5% Accuracy Guarantee
Triple Validation System
2-3 Day Turnaround
20 Years International Experience
Need Help Now?
Contact: info@bimtakeoff.com | +44 (0) 20 3239 9967
Office Hours: Monday-Friday, 9:00-17:00 CET
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