--- title: "Gas Safety Certificate (CP12) Scunthorpe & North Lincs | A T Plumbing & Heating" description: "Landlord Gas Safety Certificates (CP12) issued across Scunthorpe, Hull, Grimsby and Doncaster by a Gas Safe registered engineer. 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Fixed price, digital copy." }, { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How much is a Gas Safety Certificate?", "acceptedAnswer": { "@type": "Answer", "text": "Fixed price fixed-price in core North Lincolnshire (Scunthorpe, Brigg, Messingham, Scotter, Kirton Lindsey, Barton-upon-Humber). Slightly more for Hull, Grimsby and Doncaster. Discounts on portfolios of 3+ properties." } }, { "@type": "Question", "name": "How long is a CP12 valid for?", "acceptedAnswer": { "@type": "Answer", "text": "12 months from the date of inspection. You can renew up to two months early without losing time off your renewal date — the new certificate runs from the original anniversary." } }, { "@type": "Question", "name": "How quickly can you do one?", "acceptedAnswer": { "@type": "Answer", "text": "Booked Mon–Fri across North Lincs. Hull, Grimsby and Doncaster covered during the same working week — call as early in the day as possible." } }, { "@type": "Question", "name": "Do you arrange access with the tenant?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — provide the tenant's contact details and we'll co-ordinate the appointment directly. You don't need to be involved unless you want to be." } }, { "@type": "Question", "name": "Can I bundle a service with the CP12?", "acceptedAnswer": { "@type": "Answer", "text": "Yes — CP12 + annual boiler service as a fixed-price package keeps the manufacturer warranty active and saves on a second visit." } }, { "@type": "Question", "name": "What if you find a fault?", "acceptedAnswer": { "@type": "Answer", "text": "We'll explain what it is, classify it (Immediately Dangerous, At Risk, Not to Current Standards) and quote in writing for the remedy. You decide whether we do it or someone else does." } }, { "@type": "Question", "name": "Do you cover commercial properties?", "acceptedAnswer": { "@type": "Answer", "text": "We do small commercial — domestic-style boilers in offices, salons, shops. Industrial gas (above 70kW input or 35bar) is outside our certification." } }, { "@type": "Question", "name": "Will you remind me when it's due?", "acceptedAnswer": { "@type": "Answer", "text": "Yes, automatically. Free email reminder 30 days before renewal, then again 7 days before. You won't lapse." } } ] } ] --- [info@atplumbing.co.uk ](mailto:info@atplumbing.co.uk)Winteringham, North Lincolnshire — covering Scunthorpe, Hull, Grimsby & surrounds Mon–Fri 8am–5pm · Family-run · Gas Safe registered 556262 [07576 593045 ](tel:07576593045) [![A T Plumbing & Heating (Lincs) Limited](/__l5e/assets-v1/4b011dd3-2dc4-4e91-b5f8-70b484305ad1/at-plumbing-heating-logo.png)](/) [Home](/)[About](/about) [Services](/services) [Service Areas](/service-areas) [Our Work](/our-work)[Reviews](/reviews)[Contact](/contact) [07576 593045 ](tel:07576593045)[Request Estimate](/contact) 1. [Home](/) 2. [Services](/services) 3. Gas Safety Certificates CP12 Gas Safety Certificates · Landlords # Landlord Gas Safety Certificate (CP12) issued in Scunthorpe — by a Gas Safe registered engineer. Legally compliant CP12 inspections for landlords and letting agents across North Lincolnshire and the Humber. Digital certificate emailed within hours, hard copy posted on request. [Request a Free Estimate](#enquiry) [07576 593045](tel:07576593045) ★★★★★ Booked Mon–Fri appointments · Fixed price, no add-on charges · Digital certificate within hours. ## Get a Free Quote Tell us about the job — we'll reply fast with a no-obligation estimate. 18 years in plumbing & heating Gas Safe Registered — every gas job certified G3 Certified Unvented hot water qualified Mon–Fri 8am–5pm Fixed price Quote in writing before work starts Service overview ## A legal requirement, handled properly Every landlord renting out a property with a gas appliance must hold a current Landlord Gas Safety Record (CP12) — annually, with a copy given to the tenant within 28 days. We make that the easy part of being a landlord, not the worry. ### What it is A full annual gas safety inspection covering every gas appliance, flue and pipework in the property — tested for tightness, soundness, ventilation, combustion and safe operation. Certificate issued in digital format with hard copy on request. ### Who it's for Landlords, letting agents, social housing providers, holiday let owners and managing agents across Scunthorpe, Brigg, Kirton Lindsey, Messingham, Scotter, Barton-upon-Humber, Hull, Grimsby and Doncaster. ### When it's needed Annually, before the existing certificate expires (we can let you know when renewal is due). Before a new tenancy begins. After any new gas appliance is installed. After any flue or chimney alteration. ### Why a professional matters Failure to provide a current CP12 is a criminal offence, voids most landlord insurance, and prevents you from serving a Section 21 notice. More importantly, it's the single check most likely to catch a carbon monoxide hazard before it kills someone. What goes wrong ## What goes wrong without a current certificate The penalties are severe — and that's before anything actually happens to the property. ### Section 21 invalidated You cannot serve a valid Section 21 notice without proof you supplied the tenant with a current CP12. Many landlord eviction cases collapse on this point alone. ### Unlimited fines & criminal record The Gas Safety (Installation and Use) Regulations 1998 carry unlimited fines and possible imprisonment for non-compliance. Local authorities prosecute regularly. ### Insurance void Almost every landlord buildings and contents policy makes a current CP12 a condition of cover. Without it, you'll get nothing on a fire or gas-related claim. ### Selective licensing breach Many Hull and Doncaster boroughs operate selective licensing schemes that require an in-date CP12 as a licence condition. Breach = further fines. ### Carbon monoxide The reason the certificate exists. A faulty appliance or blocked flue can kill a sleeping family in hours. Annual inspection is the single most effective check. ### Mortgage breach for BTL Buy-to-let mortgage conditions typically require gas compliance. Lender breaches can trigger early repayment demands. Our process ## Our CP12 inspection process Roughly 45 minutes per property for a typical one-boiler home. Longer if there are multiple gas appliances. 1. 01 ### Booking Booked Mon–Fri appointment slots. We liaise with the tenant directly on your behalf if you prefer. 2. 02 ### Appliance Inspection Visual check, ventilation, flueing, location, stability and operating pressure on every gas appliance in the property. 3. 03 ### Tightness Test Gas tightness test from the meter to verify no leaks anywhere on the supply pipework. 4. 04 ### Flue Gas Analysis FGA on the boiler — combustion ratio recorded, fault flagged if outside manufacturer spec. 5. 05 ### Documentation CP12 completed digitally on the day, signed and dated, tenant copy left at the property. 6. 06 ### Digital Delivery & Reminders Certificate emailed to landlord and agent within hours. Automatic reminder 30 days before next renewal. Benefits ## Why landlords stick with us ### Digital certificate CP12 emailed once issued — no waiting two weeks for paperwork. ### Tenant-friendly engineer Azim handles tenant access politely, on time, in identifiable clothing. Tenants don't complain — they recommend us to other landlords. ### Multi-property scheduling Multi-property landlords get co-ordinated visits, batched invoicing and a single renewal calendar across the portfolio. ### Honest fault flagging If we find a fault, we tell you what it costs to fix in writing — no auto-condemn to push a sale. ### Trusted by local agents Regular work for several letting agents across Scunthorpe and Doncaster. Invoiced clearly for agency accounts. Recent work ## Real jobs, real installs. A few recent gas safety certificates jobs completed across North Lincolnshire. ![Kane K458 flue gas analyser testing a Baxi combi boiler for a Gas Safe certificate, North Lincolnshire](/__l5e/assets-v1/2dd40a29-6b28-4360-a23a-027fff938354/work-02.jpeg) In detail ## Inside a CP12 inspection What we check, what gets recorded, and what happens if something fails. [Get a fixed quote](#enquiry) ### Appliance checks Every gas appliance: boiler, hob, oven, fire, water heater. We inspect for safe operation, ventilation, flueing, stability, suitability of location, manufacturer instructions, evidence of CO and operating pressure. ### Flue & combustion checks Visual inspection of the flue route, terminal clearances and condition. Flue gas analyser on the boiler measures CO/CO₂ ratio — anything outside spec is recorded on the certificate. ### Tightness testing Gas leak test from the gas meter through the supply pipework — required on every CP12, regardless of how many appliances are present. ### What 'At Risk', 'Immediately Dangerous' and 'Not to Current Standards' mean ID appliances are isolated and capped — gas supply turned off, certificate marked. AR appliances are usable but flagged for remedy. NCS issues are recorded for awareness. We always explain in plain language what's needed. ### CO alarms England requires a CO alarm in any room containing a fixed combustion appliance (other than gas cookers) in a rented property. We check presence and operation as part of every CP12. ### Service vs Certificate A CP12 is a safety inspection — it isn't a service. Many landlords bundle the two (a CP12 + boiler service) to keep the manufacturer warranty active. We offer that as a fixed-price package. ### What lands on the certificate Landlord and tenant addresses, engineer's Gas Safe number, every appliance tested, results of every test, defects, remedial action recommended and next inspection due date. ### Holiday lets & HMOs We cover holiday lets and HMOs across the Humber. HMO inspections often include additional fire safety touchpoints around the gas installation — fully documented in the CP12 record. Frequently asked ## Straight answers, in plain English. Can't see your question? Ring Azim directly on [07576 593045](tel:07576593045). ### How much is a Gas Safety Certificate? Fixed price fixed-price in core North Lincolnshire (Scunthorpe, Brigg, Messingham, Scotter, Kirton Lindsey, Barton-upon-Humber). Slightly more for Hull, Grimsby and Doncaster. Discounts on portfolios of 3+ properties. ### How long is a CP12 valid for? 12 months from the date of inspection. You can renew up to two months early without losing time off your renewal date — the new certificate runs from the original anniversary. ### How quickly can you do one? Booked Mon–Fri across North Lincs. Hull, Grimsby and Doncaster covered during the same working week — call as early in the day as possible. ### Do you arrange access with the tenant? Yes — provide the tenant's contact details and we'll co-ordinate the appointment directly. You don't need to be involved unless you want to be. ### Can I bundle a service with the CP12? Yes — CP12 + annual boiler service as a fixed-price package keeps the manufacturer warranty active and saves on a second visit. ### What if you find a fault? We'll explain what it is, classify it (Immediately Dangerous, At Risk, Not to Current Standards) and quote in writing for the remedy. You decide whether we do it or someone else does. ### Do you cover commercial properties? We do small commercial — domestic-style boilers in offices, salons, shops. Industrial gas (above 70kW input or 35bar) is outside our certification. ### Will you remind me when it's due? Yes, automatically. Free email reminder 30 days before renewal, then again 7 days before. You won't lapse. Related services ## More from A T Plumbing & Heating [View all services](/services) [Boiler Servicing & Repairs ](/services/heating)[Boiler Fault Finding ](/services/fault-finding)[Boiler Installations ](/services/boiler-installations) Next step ## Book a Landlord Gas Safety Certificate. Digital CP12 issued within hours. Fixed price, no add-ons, . [Request a Free Estimate](/contact) [07576 593045](tel:07576593045) - Gas Safe registered - G3 certified - Fully insured - Family-run · Gas Safe registered 556262 Phone [07576 593045](tel:07576593045) Email [info@atplumbing.co.uk](mailto:info@atplumbing.co.uk) Based 17 High Burgage, Winteringham, DN15 9NE Hours Mon–Fri 8am–5pm · Sat/Sun closed [![A T Plumbing & Heating (Lincs) Limited](/__l5e/assets-v1/4b011dd3-2dc4-4e91-b5f8-70b484305ad1/at-plumbing-heating-logo.png)](/) Gas Safe registered plumbing & heating engineers based in Winteringham, North Lincolnshire. Family-run · Gas Safe registered 556262 across Scunthorpe, Hull, Grimsby, Doncaster and the wider Humber region. [](https://www.facebook.com/ATPlumbingandHeating556262) ## Services - [Plumbing](/services/plumbing) - [Heating](/services/heating) - [Boiler Installations](/services/boiler-installations) - [Fault Finding](/services/fault-finding) - [Full Central Heating Installation](/services/central-heating-installation) - [Bathroom Fitting](/services/bathroom-fitting) - [Gas Safety Certificates](/services/gas-safety-certificates) - [Underfloor Heating](/services/underfloor-heating) - [Unvented Cylinders (G3)](/services/unvented-cylinders) ## Areas - [Scunthorpe](/service-areas/scunthorpe) - [Hull](/service-areas/hull) - [Grimsby](/service-areas/grimsby) - [Doncaster](/service-areas/doncaster) - [Brigg](/service-areas/brigg) - [Kirton Lindsey](/service-areas/kirton-lindsey) - [Messingham](/service-areas/messingham) - [Scotter](/service-areas/scotter) - [Barton-upon-Humber](/service-areas/barton-upon-humber) ## Contact - [07576 593045](tel:07576593045)[07927 450996](tel:07927450996) - [info@atplumbing.co.uk](mailto:info@atplumbing.co.uk) - 17 High Burgage, Winteringham, DN15 9NE Family-run · Gas Safe registered 556262 · Company No. 11810388 © 2026 A T Plumbing & Heating (Lincs) Limited. 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