--- title: "Gas Safety Inspections & CP12 Darlington | Greencore Solutions LTD" description: "Landlord CP12 gas safety certificates and homeowner inspections across Darlington, Teesside & Durham. 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Multi-appliance, HMOs and commercial premises take longer; we'll confirm in the quote." } }, { "@type": "Question", "name": "When will I get the certificate?", "acceptedAnswer": { "@type": "Answer", "text": "Most certificates are issued digitally before the engineer leaves site, or by close of business the same day. PDF emailed to landlord, tenant and letting agent simultaneously." } }, { "@type": "Question", "name": "What if you find a fault?", "acceptedAnswer": { "@type": "Answer", "text": "Faults are categorised in writing (Immediately Dangerous, At Risk, Not to Current Standards). You receive a fixed quote to remediate. No pressure — we'll also accept your own engineer's repair and reissue the certificate once safe." } }, { "@type": "Question", "name": "Do I have to be there for a tenanted property?", "acceptedAnswer": { "@type": "Answer", "text": "No. We co-ordinate access directly with your tenant. 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Letting agents can hold a key safe code — we work with all the major North Yorkshire agencies." } }, { "@type": "Question", "name": "Is a CP12 the same as a gas safety certificate?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. 'CP12' is the historic Corgi form number; the current legal name is Landlord Gas Safety Record. They are the same document." } }, { "@type": "Question", "name": "What appliances are covered?", "acceptedAnswer": { "@type": "Answer", "text": "Every gas appliance owned by the landlord: boiler, hob, oven, gas fire, water heater, gas tumble dryer. Tenant-owned appliances are not covered but should be noted on the record." } }, { "@type": "Question", "name": "Do you do commercial gas safety?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — we hold commercial Gas-Safe categories for catering, light commercial and small industrial. Get in touch for a tailored quote." } }, { "@type": "Question", "name": "What's a CO alarm requirement?", "acceptedAnswer": { "@type": "Answer", "text": "Since October 2022 every rented property in England must have a working carbon monoxide alarm in every room with a fixed combustion appliance (excluding gas cookers). We install BSI-compliant alarms during the inspection if needed." } }, { "@type": "Question", "name": "What happens if I let my CP12 lapse?", "acceptedAnswer": { "@type": "Answer", "text": "You're in breach of the Gas Safety (Installation and Use) Regulations 1998 and your insurance is likely invalid. Book us as soon as possible — we prioritise lapsed certificates." } } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://greencoresolutions.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Services", "item": "https://greencoresolutions.co.uk/services" }, { "@type": "ListItem", "position": 3, "name": "Gas Safety Inspections", "item": "https://greencoresolutions.co.uk/services/gas-safety-inspections" } ] } ] --- Darlington & North Yorkshire Open 8am–8pm, 7 days [info@greencoresolutions.co.uk](mailto:info@greencoresolutions.co.uk)[07414 209357](tel:07414209357) [![Greencore Solutions LTD](/__l5e/assets-v1/cbf4e0fe-69d5-4aea-a5b7-20297e56d38b/greencore-logo.png)](/) Services Service Areas [About](/about)[Our Work](/our-work)[Reviews](/reviews)[Contact](/contact) [07414 209357 ](tel:07414209357)[Request Estimate](/contact) ![Flue gas analyser and Landlord Gas Safety Record on a Gas-Safe boiler inspection](/assets/gas-safety-hero-D9mmF9Uq.jpg) 1. [Home](/) 2. [Services](/services) 3. Gas Safety Inspections Service · North Yorkshire # Gas Safety Inspections & CP12 Certificates in Darlington & North Yorkshire issued by Gas-Safe engineers 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. [Request Fixed-Price Quote](/contact) [07414 209357](tel:07414209357) Gas-Safe registered · Same-day digital certificate · Landlord-portal compatible Gas Safe Registered (No. 214402) Same-day Digital CP12 emailed 45–60 min Typical on-site visit £0 Hidden extras — fixed price 12 mo Free reminder before renewal Service Overview ## What you need to know What it is 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. Who it's for 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. When you need it 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. Why professional matters 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. What it costs to delay ## The real consequences of putting it off Most landlords and homeowners don't think about gas safety until something goes wrong. By then, the cost is no longer £90: ### Criminal prosecution for landlords 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. ### Voided landlord insurance Every major landlord insurer requires an in-date CP12. A claim without one — even an unrelated water-damage claim — can be refused outright. ### Carbon monoxide poisoning 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. ### Failed house sale Buyers' solicitors now routinely request a recent gas safety certificate. Without one, sales stall in conveyancing and discounts get negotiated against you. ### Compounding repair costs Inspections catch worn seals, blocked condensate traps and degrading flues before they become £600 scheduled repairs. ### Common mistakes we fix #### Booking the inspection on the day the old one expires If the engineer can't access an appliance — or finds a fault — you've already lapsed. Always book 4 weeks before the expiry date. #### Assuming the gas hob doesn't count CP12 covers every gas appliance: boiler, hob, oven, fire, water heater. Missing one invalidates the certificate. #### Accepting a paper-only cert with no flue-gas data A valid CP12 records combustion analysis readings. If your engineer can't produce those numbers, the certificate is worthless. Our Process ## A predictable, engineered process 1. STEP 01 ### Book online or by phone Tell us the address, the number of gas appliances and your renewal date. We confirm a 1-hour arrival window by text. 2. STEP 02 ### Engineer attends DBS-checked, Gas-Safe carded, fully insured (£5m public liability). We work tidily and politely around tenants. 3. STEP 03 ### Full appliance & system check Visual inspection, operational test, flue and ventilation check, combustion analysis on every gas burner, tightness test on the gas installation. 4. STEP 04 ### Issue digital certificate CP12 issued in PDF and emailed to landlord, tenant and (if requested) letting agent — usually before we leave site. 5. STEP 05 ### 12-month reminder We log the renewal date and email you 30 days before expiry. You never get caught lapsed. Why it pays off ## Outcomes you can measure ### Legal protection in writing An auditable digital record, time-stamped and shareable with insurers, agents and HSE if ever needed. ### Fast turnaround Most inspections completed within 45–60 minutes; certificate in your inbox the same day. ### Tenant-friendly engineers DBS-checked, ID-carded, dust-sheeted and polite. We protect your tenant relationship. ### Bundle and save Combine boiler service + CP12 in one visit and save on a second appointment. ### Multi-property pricing Portfolio landlords get tiered pricing and consolidated invoicing — book 5+ properties on one day and prices drop. ### Reminder service included 30-day renewal reminder by email. Free, automatic, never a lapsed cert. The Engineering Detail ## Under the bonnet A genuine gas safety inspection is not a quick walk-around. Here is exactly what a CP12 from Greencore covers: ### What the inspection physically tests 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. ### Landlord CP12 — the legal requirements 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). ### Homeowner inspection — when it pays for itself 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). ### What 'not satisfactory' actually means 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. ### Multi-property and HMO inspections We service portfolio landlords across North Yorkshire 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. ### Combining with annual service 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. Related Services - [Boiler Installation & Servicing](/services/boiler-installation-servicing) - [Heating Engineer](/services/heating-engineer) - [Solid Fuel Installer](/services/solid-fuel-installer) - [Contact Greencore](/contact) Service Areas - [Landlord gas safety in Darlington](/areas/darlington) - [CP12 inspections in Middlesbrough](/areas/middlesbrough) - [Landlord certificates in Sunderland](/areas/sunderland) - [Gas inspections in Durham City](/areas/durham-city) - [Back to homepage](/) FAQ ## Honest answers to the questions we hear most Can't see your question? Call [07414 209357](tel:07414209357). How much does a CP12 cost in Darlington? How long does a gas safety inspection take? When will I get the certificate? What if you find a fault? Do I have to be there for a tenanted property? Is a CP12 the same as a gas safety certificate? What appliances are covered? Do you do commercial gas safety? What's a CO alarm requirement? What happens if I let my CP12 lapse? ## Book your gas safety inspection — same-day certificate Fixed price. No hidden extras. Digital CP12 emailed before we leave site. Gas-Safe registered (214402), DBS-checked engineers, fully insured (£5m public liability). [Request Fixed-Price Quote](/contact) [07414 209357](tel:07414209357) Gas-Safe registered (214402) · Fully insured (£5m public liability) · 12-month workmanship guarantee ![Greencore Solutions LTD](/__l5e/assets-v1/cbf4e0fe-69d5-4aea-a5b7-20297e56d38b/greencore-logo.png) Gas-Safe heating, renewables and bathroom specialists for homes across Darlington & North Yorkshire. 30 years on the tools. [07414 209357](tel:07414209357) [07789 505532](tel:07789505532) [info@greencoresolutionsltd.co.uk](mailto:info@greencoresolutionsltd.co.uk) 11 Chelsea Court, Marlborough Drive, Darlington, DL1 5YE Services - [Boiler Installation & Servicing](/services/boiler-installation-servicing) - [Air Source Heat Pumps](/services/air-source-heat-pumps) - [Gas Safety Inspections](/services/gas-safety-inspections) - [Underfloor Heating](/services/underfloor-heating) - [Bathroom Installation](/services/bathroom-installation) - [Renewables Installer](/services/renewables-installer) Service Areas - [Heating engineer Darlington](/areas/darlington) - [Boiler installer Middlesbrough](/areas/middlesbrough) - [Heating engineer Stockton-on-Tees](/areas/stockton-on-tees) - [Gas Safe engineer Durham City](/areas/durham-city) - [Heating engineer Hartlepool](/areas/hartlepool) - [All North Yorkshire service areas](/areas) Company - [All services](/services) - [Our work gallery](/our-work) - [Customer reviews](/reviews) - [About Greencore](/about) - [Contact us](/contact) - [Privacy policy](/privacy-policy) - [Terms & conditions](/terms-conditions) Looking for a trusted [Gas-Safe boiler installer in Darlington](/services/boiler-installation-servicing), an [MCS air source heat pump installer in North Yorkshire](/services/air-source-heat-pumps) or a [complete bathroom fitter in Teesside](/services/bathroom-installation)? Greencore Solutions LTD covers the whole region from a single accountable engineer. © 2026 Greencore Solutions LTD. All rights reserved. Gas Safe Registered HETAS Registered MCS Renewables [Call now](tel:07414209357) [Request Estimate](/contact)