The operating system
for construction.
AI built in, not bolted on.
ConstructEther replaces the stack of disconnected tools with one AI-native commercial record, in the office and on site through the app. Built first for main contractors, and for the contractors, QS and PM firms and developers who work alongside them.
Construction output figure: ONS, Construction output in Great Britain. Great Britain, 2025.
Why construction. Why now.
Three structural shifts have landed hardest on main contractors, and on the supply chain behind them. The platforms that answer them now set the standard for the next decade.
Senior talent has become a permanent constraint.
A main contractor's senior QS is the hardest hire in the business. Senior commercial salaries have outpaced fee scales for a decade, and there is no pipeline of replacements coming. AI is the only intervention that scales output without scaling headcount.
The Building Safety Act has rewritten the rules.
The main contractor carries the gateway. On higher-risk buildings the golden thread is mandatory and approvals are personal-liability moments. The firms with the cleanest records will inherit the work, and everyone else will pay the audit cost on every project.
AI capability has crossed the threshold.
Take-off, bills of quantities, scope-gap detection and live cost reconciliation are workable today, not future capability. The first platform to put them on one record for the main contractor, and the supply chain beneath it, sets the standard.
Three ways margin walks off site.
And what each one costs a main contractor.
Pricing in the dark
Pricing off spreadsheets and memory under deadline. A 2% error on a £500k package is £10k of margin, every time you submit.
Cost reporting behind reality
The month-end CVR lands weeks after the month it describes. By then the margin has gone, and the commercial team spends its week reconciling instead of intervening.
Site and office on different numbers
Diaries in a notebook, photos on someone's phone, progress in a spreadsheet. When a variation is disputed, the evidence is scattered across the site team's pockets.
One platform. Five engines.
Each engine is built around a single commercial outcome, and they all write to one project record: what you price becomes the budget, the budget drives the CVR, and the evidence is captured as the work happens.
Tender Engine
Reads the whole pack and flags the gaps as RFIs, measures the drawings, builds the NRM2 bill against your own rates and levels the subcontract quotes, with the working shown.
Partner beta nowCommercial Engine
Cost control and CVR, subcontract orders, applications and pay-less notices, variations and final account, all running from the bill you priced. Margin moves show the moment they happen, not at month end.
Beta Nov 2026Project Management Engine
Programmes, site diaries, progress and site capture on the mobile app, synced with the commercial side so a delay shows up as a forecast, not a surprise.
Beta Nov 2026Document Management Engine
Drawing and document registers, RFIs and instructions under one control, so every revision is traceable to the variation it caused.
Beta Nov 2026Compliance Engine
Building Safety Act golden thread architecture, designed-in. CDM and QA evidence captured as you work, not retrofitted the night before the auditor arrives.
Beta Nov 2026A platform that never stops evolving. The Tender Engine is in beta with our Founding Partners now. The Commercial, Project Management, Document Management and Compliance Engines and the mobile app enter beta in November 2026. New jobs start in ConstructEther and stay there, so you adopt one tender at a time, not in a single weekend.
Site records captured where the work happens, on the phone in your pocket.
The ConstructEther app puts the site side of the job on the phone: diaries, photos, progress and approvals, all landing on the same project record the commercial team works from. No second system, no end-of-week upload, nothing typed twice.
- Site diariesLogged on site each day, against the job, not typed up at the end of the week.
- Photos and site recordsTaken on the phone and filed straight to the project record, where the commercial team can find them.
- Progress against programmeUpdated from the site and seen in the office the same day.
- Approvals and instructionsReviewed and signed off on the phone, with the same audit trail as the desktop.
- Drawings and documentsThe current revision in your pocket, not last month's printout.
- Access by roleEach person on site sees what their role needs, and nothing more.
Illustrative interface
For the firms that turn drawings into buildings.
Built first for main contractors turning over £2m to £50m, and for the contractors, QS and PM firms and developers who work alongside them.
Main Contractors
Tender, deliver and prove compliance from one record, in the office and on site, with margin and programme visible to leadership as they move.
Contractors
Price bigger packages, run leaner sites, and prove compliance on the projects that move your business forward.
Concrete · Light gauge steel · Structural steel · Partitions · Dry lining · M&E · Cladding · Curtain walling · Groundworks · and moreQS & PM Firms
Win more bids in less time. Run accurate cost plans and valuations without juggling four spreadsheets and an inbox.
Developers
One source of truth across consultants and contractors. Know what's costing, what's slipping, and what's at risk before the next board meeting.
From a stack of workarounds to one platform.
On a main contractor's job the commercial picture lives in ten places. ConstructEther puts it in one record, so the board sees cash, margin and variations from the same data the site team updates.
Ten disconnected tools,
re-keyed and out of date.
One record. The numbers your board asks for, live.
Ten disconnected tools, re-keyed and out of date.
- One project record
- AI drafts, people approve
- Office and site, live
One record. The numbers your board asks for, live.
Commercial overview
October CVR draft, Care home
Built from subcontract accounts, variations and site records. Margin down 1.2pp on last month.
Illustrative interface · sample data
Four steps. One workflow.
Shown the way a main contractor runs a job, from the first tender through to handover evidence.
Built by the people who lived the problem.
Forty-five years of UK construction between the commercial founders — and a security-first engineering discipline underneath it. Not a tech team guessing at what a QS needs.
John Ellis
John has spent 25 years in UK construction — starting as a labourer for bricklayers and plasterers, working through the trades, and qualifying as a Quantity Surveyor. Thirteen of those years have been in commercial roles across Mace, Morgan Sindall, Esh Group, Elliott/Modulaire and Lindum, delivering in excess of £275 million of construction works. He practises as a Senior QS today. Twenty-five years in, the conclusion was unavoidable: construction doesn't have a software problem — it has a fragmentation problem. ConstructEther is built to fix it.
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Andrew Elsworth
Andrew brings over twenty years inside UK construction to ConstructEther — from trainee QS at Lovell to Commercial Director, and co-founder of a contracting business he scaled to £5m turnover in three years. He now runs Dawn Consult, most recently delivering PM and QS services on the £5m RAF Leeming hangar refurbishment. At ConstructEther he owns the commercial workflow and the numbers behind it.
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Chris Boyle
Chris builds security into ConstructEther from the codebase up — access control, data protection and secure development practice designed in from the first commit rather than retrofitted before an audit. Data residency is configured to each client's own compliance requirements, not a one-size-fits-all default. It's the discipline that has to be in place before a contractor puts its commercial data on any platform.
See if your firm is a fit.
Two-minute fit assessment, then a thirty-minute demo on a tender already priced in ConstructEther, matched to your type of work. We only onboard firms ready to replace their existing stack, not just trial another tool.