Unibuild compared
with BigChange.
These two are less alike than a feature list suggests. BigChange is built around a mobile workforce and the vehicles it moves in. Unibuild is built around the contract, the site and the money the job owes you.
BigChange facts read from their pricing page on
What each one charges for.
BigChange's pricing page lists what every plan includes and then asks you to request a figure. Unibuild quotes one figure per firm, in writing, and it covers everything.
| BigChange | Unibuild | |
|---|---|---|
| The meter | Licences | The firm. Never per person or per seat |
| Published rate | No. The pricing page asks you to request one | One figure per firm, quoted in writing, usually the same working day. It covers everything |
| Built around | Jobs, scheduling and a mobile workforce, with live vehicle tracking as a core feature | The contract, the subcontract ledger, labour on site and the application for payment |
| Vehicles | The centre of the product. Live tracking across all plans | Held as assets against the job, with inspections, defects and costs |
| CIS and reverse charge | Not published as a feature | Built in. HMRC tax months, labour-element deductions, CIS300 pack |
| Term and setup | Not published | No minimum term, no exit fee, no setup fee. Fee fixed for three years |
| The app your staff install | JobWatch, published by BigChange Ltd on the App Store and Google Play | Published on the App Store and Google Play under your company's own name and icon |
| Changes to fit your process | Described as "customisable to your way of working", with a REST API and accounting integrations | Built around your process. Changes requested after go-live are inside the monthly fee |
The last two rows were read on 23 September 2026 from BigChange's pricing page and its App Store and Google Play listings.
Who owns the van, and who owns the valuation.
The useful question is not which has more features. It is what your week breaks on.
If the answer is that engineers are in the wrong place at the wrong time, and jobs are rescheduled all day, the problem is dispatch. Add needing to know where every vehicle is right now and it is fleet as well. BigChange is built for that, and tracking is in every plan.
If the answer is that Friday goes on chasing hours off sites, the problem is the contract. So is an application for payment assembled from three spreadsheets and a WhatsApp thread. So is a subcontractor invoice that does not agree with the order, and a CIS return rebuilt by hand every month. That is what Unibuild was written inside two contracting businesses to carry.
Where BigChange fits.
| If this is you | Why |
|---|---|
| Live vehicle tracking is a requirement, not a nice-to-have | It is core to BigChange and across all its plans |
| You dispatch reactive jobs all day and reschedule constantly | Scheduling a mobile workforce that changes through the day is the problem BigChange is designed around |
| Your work is service calls rather than contracts and valuations | BigChange is built around jobs, scheduling and the service call |
Your process, and your app.
Unibuild is bespoke construction management software for UK contractors: a platform in daily production since 2016, shaped to the way each firm already works. Anything a firm needs, Unibuild builds for it. Changes asked for after go-live are included in the monthly fee rather than charged at a day rate. That is how bespoke construction software works at Unibuild.
The app on your operatives' phones is yours. Your staff app is published on the App Store and Google Play under your company's own name and icon. Your operatives download your app, not ours. See the staff app under your own name.
BigChange and Unibuild, asked plainly.
How much does BigChange cost?
Is BigChange good for construction?
What is the difference between Unibuild and BigChange?
Does Unibuild track vehicles?
Compared with the rest.
Same axis, same standard of evidence, one page each.
| System | What the bill scales with | Who it suits |
|---|---|---|
| Joblogic | Named users, field engineers included | Field service and maintenance firms billing by job |
| Procore | Annual construction volume | Large main contractors running many projects at scale |
| Eque2 | Not published | Firms whose centre of gravity is Sage and the ledger |
| Causeway | Not published | Large contractors, highways, infrastructure and local authorities |
| COINS | Per user licence | Contractors and homebuilders wanting one ERP with the ledger inside |
| Autodesk Construction Cloud | User, project or account, by product | Model-led projects needing a common data environment |
| Commusoft | A licence per office user, manager and engineer | Heating, plumbing and electrical service firms |
| PlanRadar | Named users, with subcontractors and watchers free | Firms whose work is defects, inspections and handover records |
| Fieldwire | Named users, with unlimited-user options on custom contracts | Teams coordinating field tasks against drawings |
| Every system, side by side | The hub table | Anyone still drawing up a shortlist |