Yes. All data is encrypted in transit (TLS 1.3) and at rest (AES-256), and we never share your drawings or project data with third parties. You can export or delete your data at any time, in line with UK GDPR.

How accurate are the AI takeoffs?

Every measurement is reviewable and editable before your BoQ is finalised, and every item links back to its source drawing location — nothing is a black box. Accuracy depends on drawing quality and annotation clarity; in beta testing on real UK residential projects, takeoffs have needed only minimal manual adjustment.

Built with UK quantity surveyors

Turn a drawing set into a priced Bill of Quantities, read from your drawing files.

Q: Can I cancel anytime?

Yes. Cancel your subscription at any time with no penalties or exit fees. Your data remains accessible for 30 days after cancellation, giving you time to export any documents you need.

Q: Do builders and architects need separate licences?

No. The Business plan includes multi-role access so your whole project team — quantity surveyor, builder, and architect — can collaborate under one subscription. Each role has appropriate access controls managed from the admin dashboard.

Q: What drawing formats are supported?

QuantiFlow works with PDF drawings — the format most UK practices issue and receive — with no limit on the number of drawings per project. Support for additional CAD formats is in development.

Measured twice. Priced once.

Upload your PDF drawings and QuantiFlow reads the quantities from the geometry inside them, then prices them against a maintained UK rate library. Every figure traces back to a point on the drawing.

Get early access See how it works →

Now in private beta · Free 7-day trial at launch · No credit card

Takeoff · Douglas Road

01 · From the drawing

External wall
12.40 lm · one brick

02 · Measured (lm × storey height)

12.40 lm × 2.70 m = 33.48 m²

03 · Priced from the rate library

14.01.01

Facing brickwork, one brick

m²

33.48

68.00

£2,276

Traceable to the drawing file Drawing-agnostic PDF Every quantity traceable Private & auth-gated uploads

How it works

Three steps, and the surveyor stays in control.

QuantiFlow does the measuring. You keep the judgement — confirming the parameters that drawings alone don't settle.

STEP 01

Upload the drawing set

Drop in your PDF drawings. QuantiFlow reads the geometry, annotations, and schedules — no manual scaling, no digitiser.

— you upload

STEP 02

Confirm the parameters

The AI measures linear metres per floor; you confirm storey heights and specifics in an editable column. Measurement meets judgement.

— you verify

STEP 03

Export the estimate

A priced Bill of Quantities in a structure clients and consultants will recognise. Export to PDF or Excel in a click, every quantity traceable to the drawing it came from.

— quantiflow delivers

Why QuantiFlow

Built around how QS work actually gets done.

Measured from the file, not the image

Quantities are computed from the vector geometry inside your PDF, not estimated from a picture of it. Upload a drawing set and every dimension traces back to a coordinate in your own file.

Eliminate double-counting

The cross-referencing engine tracks every item across revisions and flags discrepancies before they become pricing errors — or contractual disputes.

Current UK rates

Each line is priced against a maintained UK rate library, kept current — so your Bill reflects today's market, not last quarter's spreadsheet.

Features

Everything your practice needs, in one platform.

AI quantity takeoff

Extract quantities straight from your drawings.

Upload your PDF drawings and QuantiFlow reads the geometry, annotations, and schedules automatically. No manual scaling, no digitiser — just measured quantities, referenced back to the drawing.

Drawing intelligence

Floor plan · Level 01PDF · A1

12 zones auto-detected · 3 drawings cross-referenced

Automated BoQ

A surveyor's estimate, ready to work from.

Produce a priced Bill of Quantities laid out the way a surveyor expects, broken down by work element and floor. Export to PDF or Excel with a single click, every measurement traceable back to the drawing.

Traceable measurement

BoQ · SuperstructureBoQ

Ref	Description	Unit	Qty	Rate	Total £
4C.01	Structural steel beams 203×133	t	4.82	1,850	8,917
4C.02	Steel columns 152×152 UC	t	2.14	1,920	4,109
4D.01	Concrete floor slab 150mm	m²	186.4	62.50	11,650
4D.02	Screed to floors 75mm	m²	186.4	18.00	3,355
Section total					£28,031

Drawing cross-referencing

Catch double-counting before it costs you.

QuantiFlow checks every uploaded drawing against the others, identifying overlapping measurement zones and conflicting annotations. Every conflict flagged, every saving logged in the audit trail.

Conflict detection

Cross-reference report2 conflicts

Conflict · Zone 3A · DWG-003 vs DWG-007

Floor slab area measured twice: 24.6 m² overlap between structural and architectural plans.

Estimated saving · £1,538

Conflict · Zone 1B · DWG-001 vs DWG-004

Brickwork elevation measured on two drawings with conflicting window openings.

Estimated saving · £840

✓ 48 items verified — no conflicts

UK rate library

Every item priced against UK market rates.

Each line in your BoQ is priced against a maintained UK materials rate library, kept current. No more manual rate lookups, no more outdated price books — with the final rate always yours to adjust.

Updated regularly

Rate library · UKUpdated recently

Material	Qty	Prev	Live	Δ
Concrete C25/30, foundations	38.4 m³	148.00	151.50	+2.3%
Structural brickwork	284.5 m²	64.00	68.00	+6.3%
Reinforcement bar B500B	2.84 t	820.00	835.00	+1.8%
Timber joist 200×50	186 m	4.20	3.95	−6.0%

The quality gate

“Every measurement pattern is benchmarked against projects I've priced by hand. If it doesn't match a surveyor's own take-off, it doesn't ship.”

Founder

Benefits

What that means for your practice.

Your judgement, not your morning

The measuring and the arithmetic are done for you. Your time goes on the judgement work only a surveyor can do.

Accuracy

Every quantity is measured from the drawing and shows its working. You confirm the parameters drawings alone don't settle.

Fewer disputes

Every quantity traceable to the drawing it came from — so where a figure came from is never a question.

Professional output

A bill laid out in a structure clients and consultants will recognise, with every quantity traceable to its source.

Multi-role collaboration

One platform for QS, builder, and architect. Everyone works from the same data, in the same project.

Audit trail

Every revision logged automatically. Full traceability for disputes, compliance, and professional indemnity.

Pricing

Founding member pricing.

Solo

For independent surveyors and sole practitioners.

Standard price ~~£69/mo~~

£39/mo

£33/mo billed annually

Founding rate held for 12 months from signup. Standard pricing applies from year two.

1 user
Up to 5 active projects
Quantity takeoff from your drawing files
Bill of Quantities generation
Managed UK rate library
PDF & Excel exports
Email support

Business

For QS practices, contractors, and multi-discipline teams.

Standard price ~~£299/mo~~

£149/mo

£124/mo billed annually · 5 seats · extra seats £25/mo

Founding rate held for 12 months from signup. Standard pricing applies from year two.

Everything in Solo
Unlimited projects
Multi-role access (QS + Builder + Architect)
Shared rate library
Your-brand PDF & Excel exports
Admin dashboard & permissions
Full audit trail · Priority support

Enterprise

For large practices and construction businesses at scale.

Custom

Tailored to your organisation

Founding member terms available for organisations registering before launch.

Unlimited users
Dedicated account manager
API access
SSO integration
Custom onboarding & training
SLA guarantee

Founding member rates are held for 12 months from the day your subscription starts. From your second year, standard pricing applies — £69/month for Solo and £299/month for Business. Plans are month-to-month with no lock-in and you can cancel or change tier at any time.

FAQ

Common questions.

Is my data secure?+

Yes. Every upload is authenticated and private to your account — sensitive construction drawings are never publicly accessible. Access is auth-gated by design.

Can I cancel anytime?+

Yes. Plans are month-to-month with no lock-in, and you can cancel or change tier whenever you need to.

Do builders and architects need separate licences?+

On the Business plan, multi-role access is included — QS, builder, and architect can collaborate on the same project without separate subscriptions.

What drawing formats are supported?+

QuantiFlow is drawing-agnostic: upload standard PDF drawing sets and the engine rasterises and reads them directly. No CAD plugin or specific software required.

How are the quantities measured?+

Quantities are computed from the vector geometry inside your PDF drawings, so each one traces back to a point on the drawing it came from. Anything the drawing does not settle — storey heights, scope decisions — is handed to the surveyor rather than assumed, and flagged on the face of the bill.

Private beta

Be among the first QS firms on QuantiFlow.

Measured twice. Priced once.

We're opening access to a small group of UK quantity surveying practices. Leave your email and we'll be in touch when your spot is ready.

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