AI-Powered Takeoffs
Verified by Experts
Upload your construction drawings and get accurate, verified measurements with a complete Bill of Quantities. AI speed meets human precision.
AI Processing
80% faster extraction
Expert Verification
Certified QS review
Guaranteed Accuracy
Or your money back
100% Payment Protection — Your money is held securely in escrow until you approve the work
AI + Human = Perfect Takeoffs
The best of both worlds: AI speed with human accuracy. No more choosing between fast and accurate.
AI-Assisted Takeoff Service
With Human Verification
Upload construction drawings and receive accurate, verified measurements with a complete Bill of Quantities in 48 hours. Our hybrid approach combines AI speed with expert human verification for guaranteed accuracy.
Human verification included
Built on Trust & Security
Your money and projects are protected at every step
Escrow Protection
Your payment is held securely until you approve the work. No risk, no surprises.
Verified Consultants
Every consultant is vetted, verified, and approved before joining our platform.
Dispute Resolution
Fair, transparent dispute process protects both businesses and consultants.
More Services Coming Soon
We're building a complete construction office automation platform
RAMS Creation
Professional Risk Assessment and Method Statements written by experienced construction professionals.
Tender Templates
Professional tender document templates designed to win construction contracts.
Expert Consultants
Book experienced construction consultants for site visits and compliance audits.
Why UK Construction Businesses Choose Constrat.io
Save 10+ Hours Weekly
AI processes drawings 80% faster than manual methods, while human experts ensure accuracy.
Escrow Protection
Your payment is held securely until you approve the work. No risk, complete peace of mind.
Transparent Pricing
No hidden costs or surprise fees. From £50 per drawing with human verification included.
Why AI + Human Wins Every Time
Industry professionals confirm: pure AI isn't accurate enough for construction. Our hybrid approach delivers the speed of automation with the precision of expert verification.
The Best of Both Worlds
Why hybrid takeoffs outperform pure AI or manual methods
Speed
AI processes drawings 76% faster than manual methods, handling repetitive measurements in minutes not hours.
Scalability
Handle multiple projects simultaneously. AI scales infinitely while human QS focus on verification, not data entry.
Accuracy
Human QS catch what AI misses: irregular geometries, complex MEP, and jurisdiction-specific requirements.
"AI acts as a partner, not a replacement. It excels at mundane tasks but struggles with irregular geometries and jurisdiction-specific rules."— 2025 Construction Tech Industry Consensus
"We tested pure AI takeoff tools and found they missed infill walls and complex furred-out columns. Constrat's hybrid approach catches what AI misses. The 98% accuracy claim is real because a human QS actually verifies every output."
Based on industry feedback from Togal.AI & PlanSwift users
David Hartley
Senior Estimator, Hartley Construction Group
Leeds
"I've used Bluebeam and PlanSwift for years. They're fast but require me to click every point. Constrat's AI does the heavy lifting in minutes, then I verify the complex areas. It's genuinely the best of both worlds - AI speed with human precision."
Reflects University of Kansas study on AI vs manual takeoff
Emma Whitfield
Quantity Surveyor, Whitfield & Partners
Bristol
"We completed a 30-storey high-rise takeoff in 48 hours. Previously that was a two-week job. The AI handles the repetitive measurements while the QS focuses on irregular geometries and jurisdiction-specific rules. Scalability without sacrificing accuracy."
Inspired by Total Flooring Contractors case study
Robert Chen
Director, Chen Building Services Ltd
Manchester
"Pure AI tools struggle with MEP and HVAC scopes - that's industry consensus. Constrat's human verification layer means I can trust the BOQ for complex mechanical works. We've reduced budget overruns by 60% since switching."
Reflects 2025 industry reports on AI takeoff limitations
Sophie Anderson
Commercial Manager, Anderson Developments
Birmingham
"The industry consensus in 2025 is clear: AI is a partner, not a replacement. Constrat understands this. Their AI excels at counting doors and measuring walls, but the human QS catches the nuances that win tenders. That's why we recommend them."
Based on expert consensus from construction tech reports
Thomas Wright
Founder, Wright Estimating Services
London
"We tried fully automated platforms - the accuracy gap was less than 1% on simple plans but catastrophic on complex geometries. Constrat's hybrid model gives us confidence. The escrow protection means we only pay when the takeoff is verified accurate."
Reflects accuracy comparisons from 2025 AI takeoff studies
Lisa Morgan
Operations Director, Morgan & Co Contractors
Glasgow
Backed by Industry Research
Our hybrid approach is validated by real-world results from leading construction technology studies:
Hear It Directly From Our Clients
Real construction professionals sharing their experience with our hybrid AI + human verification takeoff process. No scripts, no actors — just genuine results.
45+
Video Reviews
4.9/5
Avg. Rating
We switched from manual takeoffs to Constrat's hybrid model and cut our estimating time by 70%. The AI handles the grunt work, our QS verifies the complex bits. It's transformed how we bid for projects.
James Thornton
Managing Director, Thornton Construction Group
Pure AI tools missed critical MEP details on our hospital project. Constrat's human verification caught every discrepancy. We avoided what could have been a £200K budget overrun. The escrow protection gave us total confidence.
Sarah Mitchell
Head of Estimating, Mitchell & Webb Contractors
I've been a QS for 18 years. Constrat doesn't replace my expertise, it amplifies it. I can now handle three times the project volume with better accuracy. The hybrid approach is the future of quantity surveying.
Marcus O'Brien
Senior Quantity Surveyor, O'Brien Cost Consultants
Our 30-storey mixed-use project was quoted at two weeks for takeoff. Constrat delivered in 48 hours with 98.5% accuracy. The transparent pricing meant no surprises. This is how construction tech should work.
Priya Kapoor
Commercial Director, Kapoor Infrastructure Ltd
Escrow Protected
Projects Completed
Verified Accuracy
UK Regions Served
No Hidden Costs. No Surprises.
Every Constrat.io service has clear, upfront pricing. Know exactly what you'll pay before you commit.
AI Takeoff
Upload drawings, get accurate measurements and BoQ in 48 hours
RAMS Creation
Professional Risk Assessments & Method Statements by humans
Tender Templates
Professional tender documents that win work
Expert Consultants
Book experienced construction professionals by the hour
100% Satisfaction Guarantee
Not happy with the takeoff accuracy? RAMS don't meet your standards? We'll revise it for free or refund you in full. No questions asked. That's the Constrat.io promise.
Why We Built Constrat.io
Twenty years in construction. Started on the tools, ended up running operations for companies with 50+ lads on the books.
I've done more takeoffs than I can count. Sat in the office until 10pm measuring drawings while everyone else went home. Missed dinners, missed weekends, missed my kids growing up — all because someone had to do the bloody paperwork.
The thing is, I know loads of directors just like me. Blokes who came up through the trades, know how to run a job, know how to manage a team — but the office stuff? That's what holds them back. They're brilliant at building, but they're drowning in admin.
So I built Constrat.io. Not some fancy tech startup nonsense. Just a tool that does the office side of the business for you, so you can get on with actually running your business.
Upload your drawing, get your quantities back, price your job, go home on time. That's it. That's all it does. And that's all it needs to do.
The Founder
20 years in construction
Common Questions About Constrat.io
Everything you need to know about our construction office services
Constrat.io delivers AI-powered construction takeoffs within 48 hours. Upload your drawings and receive accurate measurements and a complete Bill of Quantities ready for pricing. For urgent jobs, we offer a 24-hour rush service for an additional fee.
Ready to Save 10+ Hours Every Week?
Join 127+ UK construction businesses already using Constrat.io for faster, more accurate takeoffs with complete payment protection.
Escrow Protected
Funds held securely
Human Verified
Expert QS review
48hr Turnaround
Fast delivery
From £50
Per drawing
Platform Stats
Real results from real businesses
100% Payment Protection
Your money is safe until you approve the work