The Best Software for Gas Safe Records and Certificates (UK, 2026)
A 2026 comparison of UK software for generating, storing and renewing Gas Safety Records and CP12 certificates, covering renewal tracking, landlord obligations and offline reliability. Checker, GES, Powered Now, Commusoft, Joblogic, BigChange, Tradify and Fergus are compared on what actually keeps a landlord’s gas compliance current rather than overdue.
The Best Software for Gas Safe Records and Certificates (UK, 2026)
A landlord’s Gas Safety Record, the certificate still widely called a CP12, has to be renewed every 12 months under UK law, and the Health and Safety Executive can ask to see it on request. This guide compares the software UK gas engineers, landlords and letting agents actually shortlist for generating, storing and renewing those records, rather than job management in general, so a missed date or a lost paper copy stops being how compliance quietly breaks down.
By Daniel Sedgwick, Founder of Checker and a former gas engineer
A Gas Safety Record, still commonly called a CP12 after the old CORGI form number, is what a Gas Safe registered engineer issues after checking a property’s gas appliances, flues and pipework. Under the Gas Safety (Installation and Use) Regulations 1998, landlords must have this check carried out at least once every 12 months, keep the record for at least two years, and give tenants a copy within 28 days of the check or before a new tenancy starts.
A lot of that obligation still runs on a carbon-copy pad, a filing cabinet, and a diary note if anyone remembers to write one. That works until a certificate goes missing, a renewal date slips unflagged, or a letting agent asks for several years of records on a property that has changed hands twice. None of that is rare; it is the normal way a paper system fails, and exactly what software built around Gas Safety Records is meant to remove.
No single platform below is right for every gas engineer or landlord portfolio. This is a shortlist of what each tool actually does for generating and renewing Gas Safety Records specifically, because a sole trader with twenty rental properties needs something different from a five-engineer firm working across several letting agents.
Key takeaways
- A landlord’s Gas Safety Record (CP12) must be renewed within 12 months of the last check, kept on file for at least two years, and copied to the tenant within 28 days.
- Most tools here, including Tradify, can now generate a Gas Safety Record digitally. The real difference is whether a renewal reminder counts from the certificate’s actual date, and whether the app works offline.
- Powered Now ties its renewal reminders to CP12, CP2 and gas breakdown record dates. Checker’s Annual Service Reminder fires around eleven months after a customer record is created, worth checking against the certificate’s real date on older records.
- Contract terms vary: Checker, GES and Powered Now run month to month with no lock-in, Commusoft’s standard plans commit to 12 months, and Joblogic’s headline price is billed annually.
On this page
Gas Engineer Software (GES)
Where GES earns its keep is in how directly it maps to a gas engineer’s actual paperwork: oil safety checks, gas tightness testing and the CP12 landlord record itself are each a native output, not a form you have to build yourself.
The reminder side is thinner, described by the vendor as basic and gas-only rather than a renewal system built to span several trades. Expect to pay from around £18 a user monthly on the annual plan, moving up to about £30 once accounting features get added on a Pro tier, a combination that suits a gas-only sole trader wanting CP12s off paper as cheaply and simply as possible.
Checker
Gas Safety Record and CP12 generation sits close to the centre of what Checker does, not tacked on as an afterthought. Dan Sedgwick founded the platform after working as a gas engineer himself, building it for UK gas, electrical, plumbing and heating trades, and close to 19,600 UK trade users have between them logged 6.88 million gas compliance reports through it.
A certificate in Checker sits inside the same job record as the quote and invoice, so appliance details, defect codes and the engineer’s Gas Safe number are captured once, including offline in a basement or plant room with no signal, and synced once a connection returns. Checker’s Annual Service Reminder fires automatically around eleven months after a customer record is created, prompting the next visit before the previous certificate is likely to lapse. That reminder counts from record creation rather than the certificate’s own legal expiry date, so it is worth checking the two line up on an older record. An invoice chaser, quote chaser and appointment reminders run on the same record, sent under the engineer’s own branding.
Checker syncs two-way with Xero, QuickBooks and Sage. Pricing runs per sub-user across three plans, Lite from £10.99, Pro at £19.99 and Pro Plus at £25.99, all plus VAT, with no lock-in contract. It suits engineers who want certificate generation and a renewal prompt built around the same job record. Start at my.checker.app/register.
Powered Now
Powered Now is a UK quoting, invoicing and forms app with certificate templates that specifically include CP12 landlord gas safety records, CP2 and gas breakdown or service records, alongside a wide range of electrical templates.
Its renewal reminders are confirmed directly by the vendor’s own support documentation to be tied to those certificate dates, not just a general job or record timer, which is a genuinely useful detail for a landlord managing several properties. It also confirms real offline working, so a certificate can be completed and signed on site with no signal and synced once a connection returns. Certificates are gated to the Professional plan and above rather than included on the base Business plan, with pricing running roughly £28 to £40 per user a month, ex VAT, depending on tier.
Commusoft
Commusoft is a UK field service platform built for established, multi-engineer businesses rather than sole traders, and its own site states it is designed for businesses with six or more staff.
Gas Safety Record and electrical certificate generation is native on its Go Paperless plan, fields auto-populated from the CRM, signatures captured on mobile. Documentation does not describe a renewal reminder tied to a certificate’s expiry, so the 12-month cycle is more likely to sit with whoever runs the diary. Pricing needs a demo call, and standard plans run on a 12-month contract rather than month to month.
Joblogic
Joblogic bundles certification modules into a wider UK job management platform, and its customer base skews toward larger operations, gas and heating contractors, fire and security firms, running maintenance contracts across a spread of client sites rather than a landlord’s single rental property.
A 30-day free trial is on offer, and the headline price is £45 per user a month on the annual term, with a rolling monthly option alongside it. Joblogic does not document offline mobile behaviour anywhere on its own site, so a gas engineer completing a Gas Safety Record in a signal-dead plant room should ask directly. It suits commercial and multi-site contractors better than a sole trader managing landlord gas checks one property at a time.
BigChange
BigChange is a UK field service platform built around job management alongside vehicle tracking and telematics, with gas certificate generation included natively, though electrical certificate coverage is not confirmed in the same way.
That combination suits larger heating or multi-trade contractors running a fleet of vans, where the certificate is one part of a much bigger operational picture. Pricing is enquiry-only, and vehicle tracking is bundled as standard rather than sold separately, a heavier, costlier proposition than a tool built purely around certificates.
Tradify
Tradify is a widely used job management app among UK plumbers, electricians and gas engineers, and it has added UK-specific certificate templates, including the Landlord Gas Safety Record, the CP42 commercial catering certificate, and EICR and EIC electrical certificates, all generated and signed within the job on web and mobile.
What happens after the certificate is issued is less clear: Tradify’s documentation does not describe a reminder tied to the 12-month expiry, so tracking a due date sits with whoever runs the diary. It also has no offline mode, needing a live connection at all times, which matters in a basement or plant room with poor signal. Pricing runs per user across tiers, roughly £34 to £44 a month.
Fergus
Fergus is a job management platform, originally built for trades in New Zealand and Australia, that now has a genuine UK presence, including a Manchester office and integrations with UK suppliers such as City Plumbing and Wolseley.
Certificate coverage runs through a free add-on covering CP12, PAT, EIC and Minor Works, though EICR is not named in that list, worth checking if that exact document is what a job requires. UK pricing: Essentials from £39 a month, Professional from £45, and a custom quote for Enterprise at 10 or more users. It suits trades wanting job costing alongside CP12 generation more than certificates being the main draw.
Comparison table
| Tool | Gas Safety Record / CP12 | Renewal reminder tied to expiry | Offline certificate capture | Accounting sync | Price and contract | Best suited for |
|---|---|---|---|---|---|---|
 Gas Engineer Software |
Yes: CP12, gas tightness tests, oil records | Basic, gas-focused; not confirmed tied to exact expiry | Not confirmed | Not confirmed | From around £18/user/month annual, £30 for Pro with accounting | Gas-only sole traders wanting the cheapest entry point |
 Checker |
Yes, core to the platform | Yes, fires at around 11 months from record creation, not the certificate’s own expiry | Yes, syncs on reconnect | Xero, QuickBooks, Sage (two-way) | Per sub-user: Lite £10.99, Pro £19.99, Pro Plus £25.99 (+VAT), no lock-in | Gas, electrical, plumbing and heating engineers |
 Powered Now |
Yes: CP12, CP2, gas breakdown record | Yes, confirmed tied to certificate dates | Yes, confirmed by vendor | Xero (two-way) | £28 to £40/user/month ex VAT; certificates need Professional plan+ | Sole traders wanting a confirmed renewal reminder |
 Commusoft |
Yes, native (Go Paperless plan) | Not confirmed as tied to expiry | Yes, confirmed on mobile | Not confirmed | Around £40/licence/month, 12-month contract, 6+ staff design | Established multi-engineer businesses |
 Joblogic |
Yes, certification modules | Not confirmed | Not documented | Sage, Xero, QuickBooks | £45/user/month annual, or monthly rolling | Commercial and multi-site contractors |
 BigChange |
Yes, native | Not confirmed | Not confirmed | Xero and Sage | No self-serve figure; quote required | Larger contractors running a fleet |
 Tradify |
Yes: Landlord Gas Safety Record, CP42, EICR/EIC | Not documented as tied to expiry | No offline mode | Xero, QuickBooks (two-way); Sage (one-way) | Roughly £34 to £44/user/month | Teams comfortable tracking renewal dates themselves |
 Fergus |
Yes, free add-on: CP12, PAT, EIC, Minor Works | Not confirmed | Not confirmed | Not confirmed | Essentials £39/mo, Professional £45/mo, Enterprise custom | Trades wanting job costing alongside CP12 |
Frequently asked questions
What is a CP12 and how often does it need renewing?
CP12 is the common name for a Landlord Gas Safety Record, the certificate a Gas Safe registered engineer issues after checking a property’s gas appliances, flues and pipework. Under the Gas Safety (Installation and Use) Regulations 1998, a landlord must have this check done at least once every 12 months, keep the record for at least two years, and give the tenant a copy within 28 days. A 2018 amendment allows the check up to two months early without resetting that clock.
Is paper enough, or do I need software to store Gas Safety Records legally?
There is no legal requirement to use software specifically, a paper record is valid if it meets the regulations. The real risk is retrieval and renewal tracking, not the certificate’s format: the HSE can ask a landlord or agent to produce records on request, and a late-renewed CP12 is a compliance failure regardless of format. Software reduces that risk by storing records centrally and flagging renewal dates automatically.
Which of these tools actually track when a Gas Safety Record is due for renewal, rather than just producing the certificate?
Powered Now’s renewal reminders are confirmed to be tied specifically to CP12, CP2 and gas breakdown record dates. Checker’s Annual Service Reminder fires around eleven months after a customer record is created, useful but counting from record creation rather than the certificate’s own expiry, so check the two line up on an older record. Commusoft, Joblogic, BigChange and Fergus do not have a certificate-specific renewal reminder clearly documented, so confirm directly if it matters to you.
What should software for managing gas safety compliance across several rental properties actually include?
Beyond generating the certificate, look for a renewal reminder tied to the certificate’s real date rather than a generic record-creation timer, a searchable archive an agent or the HSE can be shown quickly, offline capture for poor-signal properties, and appliance-level detail such as make, model and defect codes instead of a single pass or fail field.
Does Checker connect to accounting software for invoicing gas safety visits?
Yes. Checker syncs two-way with Xero, QuickBooks and Sage. An invoice for a Gas Safety Record visit stays reconciled against the business’s accounts automatically, and because the certificate, the job and the invoice all come from one record, there is nothing to copy across by hand between the compliance paperwork and the books.
Daniel Sedgwick
Daniel Sedgwick, known on the tools as Dan, founded Checker after years working as a gas engineer. He built Checker’s certificate tools around the paperwork he found himself repeating on every landlord gas safety visit, rather than around a generic template library.
Keep every Gas Safety Record on one system
Checker was built by a former gas engineer around the certificates that matter most on site: Gas Safety Records, CP12s, and the renewal dates that keep a landlord compliant. Records sync from job to invoice, work offline in a signal-dead plant room, and the annual reminder helps get the next visit booked before a certificate lapses. A sub-user seat starts at £10.99 a month plus VAT, and there is no contract tying you in.