SubcontractorOS
AI commercial systems for subcontractors
Tier-1
Commercial
Control.
Now Built for
Subcontractors.
Turn site work into paid work.
SubcontractorOS is the operating system for your commercial team, it captures variations, dayworks, delays and retentions the day they happen, and turns them into proven, paid applications.
8–15%
Recovered per contract
The Problem
The work happened.
The record didn't.
Not captured = not certified
That's where the money was lost. Subcontractors lose 8–15% of contract value on every project, not because the work wasn't done, but because the commercial record wasn't kept. Variations unnoticed. Dayworks unsigned. Delays unrecorded.
The Solution
SubcontractorOS is
the entitlement engine.
It captures the site event, drafts the notice against the contract, and builds the proof of cause, effect and entitlement, so your application is worth what it should be before it's ever submitted.
You build the job. SubcontractorOS runs the commercials alongside you.
See it in action
Watch the platform
work on a live project.
See how a subcontractor captures a variation, logs a delay, and submits a notice, all in under 3 minutes.
The Platform
Built for subcontractors.
Not adapted from something else.
The Profit Protection System
Five steps.
One system. Full commercial control.
01
Identify
Upload your contract. The AI reads it and flags every entitlement.
02
Capture
Foreman logs variations, dayworks, and delays on site, in real time.
03
Prove
The system builds a fully substantiated commercial record automatically.
04
Submit
Contractual notices drafted in 60s. Submitted on time, every time.
05
Get Paid
Track every item from submission through to payment. Nothing lost.
Two types of subcontractor.
One platform.
Owner-Operator · €1m–€10m
The commercial department you couldn't afford to hire.
No QS. Or one QS stretched too thin. You know you're missing variations and dayworks. SubcontractorOS runs your commercial function automatically, so nothing slips through.
AI drafts variation notices, no QS needed
Foreman captures dayworks on site in 2 minutes
Full commercial visibility from one screen
Commercial Team · €10m–€60m+
Your QS can't be on four sites at once.
You have QSs. But your site team isn't capturing commercial events properly. SubcontractorOS means your QS has everything they need, without being on site.
Live visibility across all projects from one screen
Site team captures events properly, no QS on site required
QS spends time on strategy, not chasing paperwork
For the site team
How the foreman uses it.
Three steps. Two minutes.
01
Get the link
A secure link is sent to the foreman's phone. No app download. Works on any smartphone from day one.
02
Log the event
Photos, measurements, and the main contractor's signature, captured on site in under 2 minutes.
03
Done
The commercial record is built automatically.
Nothing forgotten. Nothing argued away at final account.
Mobile Foreman Portal
Your foreman captures it the day it happens.
Works on any phone. No app download. Secure link. Photos, measurements, and signatures, captured on site in real time. Your commercial record is built automatically.
Features
One platform.
Five places you lose money - closed.
Variation Management
Log, price, and submit variations with full substantiation. Minutes, not hours.
Daywork Capture
Digital signature from the main contractor's rep. No more lost daywork sheets.
Delay & EOT Tracker
Log delay events the day they happen. AI drafts the contractual notice.
Interim Valuations
All approved items into a single interim application. Submitted on time.
Retention Tracker
Know exactly what retention is held and when it falls due.
Pipeline Overview
Full commercial position at a glance - submitted, approved, certified, paid.
Mobile Portal
Any phone. No app. Secure link. Site team live on day one.
Multi-Project
3 projects or 15 - manage them all from one screen. Nothing missed.
Case Studies
Real subcontractors.
Real money recovered.
Brennan Civil Engineering Ltd
Civil & Groundworks
Cork, Ireland · €4.2m turnover
23 variations recovered
Delay event substantiated
Final account settled in full
Halligan Mechanical Services
Mechanical Contractor
Manchester, UK · €18m turnover
QS time saved: 8hrs/week
3 projects on platform
Zero missed deadlines
Fitzpatrick Fit-Out Group
Specialist Fit-Out
Dublin, Ireland · €8.5m turnover
Daywork backlog recovered
EOT claim substantiated
Retention released in full
Results verified. Company names used with permission.
What subcontractors say.
"Subcontractor OS transformed how we
handle fit-out variations. We're catching changes we used to miss, submitting airtight back-up, and getting paid faster. It's made a clear difference to our bottom line."
Alan Kearns
Director
AK Facilities Management
"Delays used to kill our margins. Subcontractor OS gave us a clear playbook to notify early and evidence everything. We're now turning lost days into recoverable costs instead of disputes, and our cash flow is steady."
Damien McConville
Director
McConville Drylining & Plastering
"I learned the hard way what a lack of structure costs. Now we work proactively with tight evidence. Issues are resolved sooner, variations are agreed faster, and our monthly cash flow is far more predictable."
Martin Murphy
Managing Director
Roadform Ltd
"The SubcontractorOS AI- powered commercial system is a game-changer.
It drafts notices and trackers in minutes so
nothing slips through the cracks. Approvals are faster, disputes are rarer,
and I've got the confidence that every claim we submit stands up. We've recovered money we would have walked away from."
Kevin Coleman
Director
Coleman Civil & Construction
"A masterclass in change control. We now have less friction and faster approvals. I'm learning every week, and as a result we are delivering projects
on time with far more predictable costs."
Phil Loughran
Owner
P. Loughran Construction
Who delivers this
Built by operators.
Forged in live contracts.
_____
Stephen Duggan
Co-Founder & Head of Delivery
QS and commercial manager with 25+ years on major construction projects across Ireland and the UK. Guest lecturer in Construction Law at Trinity College Dublin. Built SubcontractorOS from €3B+ of live contract management — after seeing firsthand how subcontractors lose entitlement they've already earned.
_____
Martyn Hughes
Co-Founder & Head of Growth
Subcontracting background in specialist trades and owner of Ireland's largest
construction network. Developed a deep interest in AI over the last two years and saw clearly how it could transform commercial control for subcontractors. Leads growth, partnerships, and the SubcontractorOS community.
Ireland
& UK focused
GDPR Compliant
EU data protection standards
EU Data Residency
Your data stays in the EU
Ring-Fenced Accounts
Zero data crossover between clients
Encrypted at Rest
Bank-grade data encryption
See what you're
leaving on site.
Book a 30-minute live demo. We'll walk through SubcontractorOS on a project like
yours — you'll see exactly what gets captured, proved, and paid.
No sales pitch. No commitment. If it's not right for you, we'll tell you.
Common questions.
How long does it take to get set up?
Most subcontractors are fully live within 5 weeks. By week two your foreman is capturing on site. By week five your commercial processes are running on SubcontractorOS.
Do my site team need to download an app?
No. The foreman portal works on any smartphone through a secure link. No app download, no IT setup. Most site teams are using it on day one.
We already have a QS — do we still need this?
Yes. SubcontractorOS doesn't replace your QS — it makes them significantly more effective. Most QSs say it saves them 8–10 hours per week.
What contracts does it work with?
SubcontractorOS works with all standard forms — RIAI, JCT, NEC, FIDIC — as well as bespoke main contractor subcontracts and verbal agreements.
What if we're mid-project when we start?
That's fine and it's common. We'll help you establish your commercial baseline and start capturing from day one on the platform.
Is our data secure?
Yes. Each client has a completely ring-fenced account. No data is shared between clients. GDPR compliant.
15-Min Commercial Review
See SubcontractorOS
on your projects.
15 minutes. No pitch. We'll show you exactly what you're losing right now — and whether SubcontractorOS is the right fit for your business.
Live platform walkthrough
See it running on a project like yours
Commercial Leak Audit
We'll identify where the money is slipping right now
Straight answer
If it's not right for you, we'll tell you — no hard sell
Book your demo
SubcontractorOS
AI-powered commercial management built specifically for subcontractors.
Turn site work into paid work.
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