Landlord CP12 certificates and homeowner gas safety checks — usually completed in 45–60 minutes, with the certificate emailed the same day, every appliance tested, and your legal obligation closed for another 12 months.
Gas-Safe registered · Same-day digital certificate · Landlord-portal compatible
A gas safety inspection is a structured check of every gas appliance, pipework run, flue and ventilation in the property. For landlords it's issued as a Landlord Gas Safety Record (commonly called a CP12) and is a legal requirement. For homeowners it's the same check, issued as a Gas Safety Certificate for peace of mind, insurance or sale.
Landlords (legally required every 12 months, before a new tenancy and within 28 days of a new appliance), letting agents, holiday-let owners, homeowners selling a property, buyers commissioning a pre-purchase check, and anyone who's smelled gas, heard a boiler 'lock out' or noticed scorch marks around a flue.
Landlord CP12: every 12 months — no exceptions. Homeowner: at point of sale, after any gas works, after moving in, or if any appliance is over 10 years old and has never been inspected.
The Gas Safety (Installation and Use) Regulations 1998 make landlords criminally liable for unsafe appliances. Fines start at £6,000 per offence and can include imprisonment. Beyond the law, faulty gas appliances cause around 30 carbon monoxide deaths in the UK every year — a £90 inspection demonstrably prevents them.
Most landlords and homeowners don't think about gas safety until something goes wrong. By then, the cost is no longer £90:
An expired CP12 is a HSE-prosecutable offence. Recent cases include £8,000 fines for a single missed inspection and unlimited fines plus prison where tenants were harmed.
Every major landlord insurer requires an in-date CP12. A claim without one — even an unrelated water-damage claim — can be refused outright.
CO is colourless and odourless. Early symptoms mimic flu and are routinely misdiagnosed. A faulty boiler or blocked flue can poison a sleeping family within hours.
Buyers' solicitors now routinely request a recent gas safety certificate. Without one, sales stall in conveyancing and discounts get negotiated against you.
Inspections catch worn seals, blocked condensate traps and degrading flues before they become £600 scheduled repairs.
If the engineer can't access an appliance — or finds a fault — you've already lapsed. Always book 4 weeks before the expiry date.
CP12 covers every gas appliance: boiler, hob, oven, fire, water heater. Missing one invalidates the certificate.
A valid CP12 records combustion analysis readings. If your engineer can't produce those numbers, the certificate is worthless.
Tell us the address, the number of gas appliances and your renewal date. We confirm a 1-hour arrival window by text.
DBS-checked, Gas-Safe carded, fully insured (£5m public liability). We work tidily and politely around tenants.
Visual inspection, operational test, flue and ventilation check, combustion analysis on every gas burner, tightness test on the gas installation.
CP12 issued in PDF and emailed to landlord, tenant and (if requested) letting agent — usually before we leave site.
We log the renewal date and email you 30 days before expiry. You never get caught lapsed.
An auditable digital record, time-stamped and shareable with insurers, agents and HSE if ever needed.
Most inspections completed within 45–60 minutes; certificate in your inbox the same day.
DBS-checked, ID-carded, dust-sheeted and polite. We protect your tenant relationship.
Combine boiler service + CP12 in one visit and save on a second appointment.
Portfolio landlords get tiered pricing and consolidated invoicing — book 5+ properties on one day and prices drop.
30-day renewal reminder by email. Free, automatic, never a lapsed cert.
A genuine gas safety inspection is not a quick walk-around. Here is exactly what a CP12 from Greencore covers:
On every gas appliance: operating pressure, gas rate (kW input), combustion ratio (CO/CO₂), flue performance under spillage test, ventilation adequacy, flame picture, stability of installation. On the installation itself: tightness test (let-by and standing pressure), pipework condition, emergency control valve accessibility, meter regulator condition.
Must be renewed every 12 months. A copy must be given to existing tenants within 28 days of the inspection. A copy must be given to new tenants before they move in. Records must be retained for 2 years. From October 2022, every rented property must also have a CO alarm in every room with a fixed combustion appliance (excluding cookers).
Pre-sale (smooths conveyancing), pre-purchase (negotiation leverage if faults found), post-renovation (essential after any extension or kitchen refit), after a near-miss (CO alarm sounded, smell of gas, pilot keeps going out).
If we find a fault we classify it as Immediately Dangerous (ID — disconnected on the spot with permission), At Risk (AR — disconnected with permission, recommended for repair) or Not to Current Standards (NCS — safe to use, advised for upgrade). Every category is explained in writing with a quote to remediate.
We service portfolio landlords across the North East with co-ordinated tenant access, bulk-booked visits and consolidated monthly invoicing. HMOs and bedsits require additional fire-safety considerations around appliance siting — we handle the lot.
A CP12 confirms safety; an annual service maintains efficiency and warranty. We strongly recommend bundling both in one visit — same engineer, one access, one invoice, one certificate.
Fixed price. No hidden extras. Digital CP12 emailed before we leave site. Gas-Safe registered (932261), DBS-checked engineers, fully insured (£5m public liability).
Gas-Safe registered (932261) · Fully insured (£5m public liability) · 12-month workmanship guarantee
