Maintenance schedules scattered across spreadsheets, a shared inbox, and a clipboard on the workshop wall. PUWER and LOLER records that take a day to assemble when an inspector asks. A team that knows a machine is about to fail but has nowhere to log the warning sign. For a lot of UK operations, the move to a proper Computerised Maintenance Management System gets triggered by exactly this: a costly bit of unplanned downtime, a near-miss on an audit, or a new site that makes central scheduling impossible.
At ByteGears we build CMMS software around how your maintenance team actually works. Not every business needs a custom build - for many, an off-the-shelf tool is the right answer, and we will say so. But where the standard products fight your workflows or your licensing bill keeps climbing, a bespoke system pays off. We are a small UK software team, and we build maintenance systems your technicians will use rather than work around.
Where off-the-shelf CMMS tools fall short
The mainstream CMMS products - the per-user SaaS tools and the heavyweight enterprise platforms alike - are built for an average maintenance operation. They work well for plenty of businesses. They start to creak in fairly predictable places:
- Rigid work order flow. Most platforms enforce a single request-to-completion path. If your approvals branch on asset type, cost threshold, and site all at once, you end up with workarounds rather than rules the system enforces.
- Per-user pricing that punishes growth. Plans commonly run from around £20 to £75 per user per month. Add technicians and the bill climbs with no ceiling. A 30-user team can be paying £20-30k a year, every year.
- Shallow integration. ERP and accounting syncs are often batch-only and lag behind reality. Connecting to an older in-house ERP frequently is not possible at all, so someone rekeys data by hand.
- Generic compliance. They cover ISO 9001 in broad strokes but rarely produce the specific PUWER, LOLER, CQC, or sector report your auditor actually wants without extra work.
- Reporting templates that nearly fit. The dashboard shows MTTR and MTBF but not the KPI your engineering manager actually tracks, and customising it is slow or simply not possible.
- Hidden costs. Data migration, integration setup, training, document storage, and premium support are routinely charged on top - and migration alone can be 40-50% of what you spend getting live.
The result is a frustrated team, a pile of manual workarounds, and an operating cost higher than the quote suggested. The hours spent papering over the gaps tend to cancel out the efficiency the tool promised.
What we build instead
We build a maintenance system that fits your operation - and we are honest about when that is worth doing. A custom CMMS makes sense when one or more of these is true:
- Your approval and escalation logic is genuinely non-standard
- You need real, live integration with a proprietary or legacy ERP
- You manage maintenance for external clients and need multi-tenant separation with your own billing model
- You have specialised compliance - pharma batch traceability, aviation MRO, regulated healthcare - that generic tools do not handle
- You are investing in IoT and want sensor data driving condition-based work orders
- You are large enough that per-user SaaS licensing has become the most expensive line in the budget
When that is you, here is what a ByteGears build gives you.
Software shaped to your process
We map your current maintenance operation first - how work gets requested, who signs off what, how PMs are scheduled - then build software that enforces those rules rather than asking your team to abandon them.
Predictable ownership cost
You make a one-off development investment instead of an open-ended subscription. Hosting and support are predictable and do not climb every time you add a technician. The system, and its source code, are yours.
Integration that holds together
We build live links to your accounting (Xero, QuickBooks, Sage), your ERP (SAP, Oracle, Dynamics, or an in-house system), and IoT sensors over MQTT or REST - so work orders, parts costs, and cost centres stay in one place.
UK compliance built in
UK data residency, GDPR retention and erasure handling, and a tamper-proof audit trail from day one. We build the specific regulatory reports your sector depends on rather than a generic export.
Room to grow
Add asset categories, sites, maintenance protocols, and users without hitting a licence tier or a performance wall. We design the data model and indexing to hold up as your asset count runs into the thousands.
UK-based support
Our team is contactable during UK business hours. No timezone gap, and the people who built the system are the people who support it.
Features and modules
Every build is scoped to what you need, but these are the building blocks we work from.
Asset registry
A single record for every piece of equipment - make, model, serial number, asset tag, location down to room level, OEM manuals, warranty expiry, acquisition cost, and criticality. Parent-child relationships handle nested assets, so an engine sits inside a vehicle and a sub-assembly inside a line.
Work order management
The full lifecycle: request, approval, assignment, scheduling, execution, and closure. Preventive, corrective, inspection, and emergency types, each with the priority and routing logic you need - including conditional approvals where, say, anything over £500 needs a manager sign-off.
Preventive maintenance scheduling
Time-based, usage-based against meter readings, and condition-based against sensor thresholds. Nested PM templates can trigger cascading sub-tasks so a major service spawns the right checklist of smaller jobs.
Mobile work orders for technicians
Field staff pull up assigned jobs, asset history, parts, and digital procedure checklists, capture photos and signatures, and close work out from a phone or tablet. We build offline-first sync where your teams work in places with no signal.
Spare parts and inventory
Track parts, reorder points, safety stock, vendors, and lead times. Stock decrements as parts are consumed on work orders, and reorder alerts fire before you run dry.
Maintenance history and audit trail
A complete, time-stamped, append-only record of every inspection, repair, and replacement - the evidence base for PUWER and LOLER records and ISO 9001 audits.
Reporting and KPI dashboards
The numbers that matter to your team: MTTR, MTBF, downtime percentage, labour and parts cost per asset, technician workload, total cost of ownership. Built to your definitions, with export to Power BI or Tableau where you need it.
Condition-based and predictive maintenance
Ingest live sensor data - vibration, temperature, pressure - and trigger work orders automatically when readings cross a threshold. Where the data supports it, we build failure-prediction models so problems surface before a breakdown.
Multi-site and multi-tenant management
Run maintenance across several locations from one dashboard. For FM and managed-service providers, we build tenant separation so each client sees only their own data, billed your way.
Roles, permissions, and approvals
Role-based access for technicians, supervisors, facilities managers, finance, and procurement, with the sign-off steps that keep safety-critical work properly controlled.
How a project runs
We deliver in phases so you get a working system early rather than waiting on one large go-live.
Discovery and data audit (2-4 weeks)
We work through your maintenance workflows, asset list, and integration points with the people who run them. We also look hard at the state of your existing data, because that shapes everything downstream.
First release (8-12 weeks)
A focused core - asset registry for your critical assets, work order management, mobile completion, time-based preventive maintenance, notifications - built on modern frameworks, with you reviewing progress as it takes shape.
Later phases (3-6 months, as needed)
Full asset and history import, spare parts and inventory, accounting and ERP integration, custom dashboards, condition-based maintenance, and sector compliance reporting - sequenced by what delivers value soonest.
Migration, training, and go-live
We migrate and clean your asset, work history, and parts data before launch so the team trusts what they see. Technicians need a couple of hours on the mobile app; admins need more. We roll out by site or team to keep disruption down, then stay on hand from the UK.
A common failure point on CMMS projects is rushing the data and trying to automate every edge case at once. We keep early scope tight and get the foundations right - it is the difference between a system people adopt and one they quietly bypass.
Cost and ownership
A custom build costs more upfront than a SaaS sign-up. The honest comparison is over years, not months.
- No per-user licence. SaaS plans commonly run £20-£75 per user per month, indefinitely. A 30-user team can spend £20-30k a year on subscriptions alone before migration and integration costs.
- You own it. Source code, data, and roadmap are yours. No vendor lock-in, no forced upgrades that break a workflow mid-shift, no per-tenant fees if you manage clients.
- Predictable running costs. Hosting and support are a known figure that does not climb with headcount.
- Phased investment. A practical first release is typically in the £20-50k range, with later modules added as they prove their worth, rather than one large commitment.
For a small, single-site team with standard needs, SaaS is often genuinely cheaper and we will tell you so. For larger operations, multi-site estates, managed-service providers, or anyone with deep integration needs, a bespoke system usually wins over a five-year horizon. The free consultation gets you a grounded estimate for your situation - not a generic payback promise.
Sector use cases
Maintenance looks different in every industry. A custom build is where those differences get handled properly.
Manufacturing
Preventive and predictive maintenance on production lines, nested asset hierarchies for sub-assemblies, spare parts tied to procurement, and PUWER, LOLER, and ISO 9001 records produced on demand. IoT sensors on critical machinery feed condition-based work orders.
Facilities management
Building systems upkeep - HVAC, electrical, plumbing, security - across multiple properties, a request portal for staff and tenants, and bespoke approval flows for leased estates. For FM providers, multi-tenant separation with your own billing model.
Healthcare and life sciences
Medical equipment maintenance and inspection with the documentation CQC and ISO 27001 audits require, equipment qualification workflows, and the specific validation and approval steps regulated settings depend on.
Energy and utilities
Maintenance on transformers, generators, and transmission assets across wide geographies, complex asset hierarchies, real-time sensor streaming, and field technician coordination with offline-capable mobile.
Food and beverage
Equipment inspection and sanitation verification tied to HACCP and BRC, preventive maintenance on bottling lines, conveyors, and refrigeration, and audit-ready documentation for ISO 22000 and FSSC 22000.
Transport and logistics
Fleet maintenance on a usage-based schedule, driver defect reporting from a mobile app, telematics integration, and multi-depot management against operator licensing requirements.
Education
Campus and teaching-equipment maintenance against Ofsted expectations, a staff request portal, and budget tracking by department and cost centre.
Because each build is custom, we adapt it to the regulatory and operational reality of your industry rather than asking you to fit a generic template.
Common Questions About Custom CMMS Software for UK Maintenance Teams
How does a custom CMMS compare on cost to a SaaS subscription?
A custom build is a larger upfront investment than signing up to a SaaS tool. The maths shifts when per-user licensing stops scaling: at 30 users on a mid-tier plan you can be paying £20-30k a year before migration and integration costs, and that bill never ends. A bespoke system is a one-off development cost plus predictable hosting and support. For larger or multi-site operations it usually works out cheaper over five years, and you own the software outright. We will give you an honest comparison for your numbers rather than a generic ROI claim.
When is off-the-shelf CMMS the better choice?
Often. If you have straightforward asset hierarchies, a standard request-to-completion work order flow, two or three sites, and no unusual compliance or integration needs, a SaaS CMMS is usually the sensible call and we will tell you so. Custom software earns its place when you have complex approval logic, deep integration with a legacy ERP, multi-tenant client work, specialised compliance, or per-user pricing that has become punishing at scale.
What's a realistic development timeline?
A focused first release - asset registry, work orders, mobile completion, time-based preventive maintenance - typically takes 8-12 weeks. Fuller builds with inventory, ERP integration, custom dashboards, and condition-based maintenance run to 4-8 months. We usually ship a working core early and add modules in phases so your team is not waiting on a single big-bang go-live.
Can you integrate with our ERP, accounting, and IoT systems?
Yes. Accounting links to Xero, QuickBooks, or Sage are straightforward. ERP integration with SAP, Oracle, Microsoft Dynamics, or an in-house system takes longer and is where bespoke software earns its keep, because we can sync work orders and cost centres directly rather than rekeying data. We also ingest IoT sensor data over MQTT or REST for condition-based maintenance.
How do you handle data migration from spreadsheets or an old system?
Carefully, because this is where CMMS projects most often go wrong. Cleaning and mapping old asset records, work history, and parts data is usually the largest single piece of the project. We audit your data early, agree what history to keep, and run the migration before go-live so your team trusts what they see on day one.
What about UK compliance and audit trails?
We build UK data residency and GDPR handling in from the start, including retention and archival rules. The system keeps a time-stamped, append-only audit trail of every inspection, repair, and sign-off, which is what PUWER and LOLER records and ISO 9001 audits depend on. For regulated settings such as healthcare under CQC, we build the specific reports and approval steps your inspectors expect.
Do you provide training and support after launch?
Yes. Technicians need a couple of hours on the mobile app; office and admin staff need more. We provide that training plus documentation, and stay on hand from the UK afterwards. Because the system is yours, you decide when it changes - there are no forced updates that break a workflow mid-shift.