Gas Safety Certificates Derbyshire

Landlord CP12s from ISM Plumbing & Heating

If you’re a landlord or letting agent, keeping your property legally compliant and gas safe starts with a valid Gas Safety Certificate (CP12). I’m Ross, owner of ISM Plumbing & Heating, and I’ve been helping landlords across Derbyshire and Nottinghamshire meet their legal gas safety obligations for over 15 years.

Whether you manage a single rental property in Sutton-in-Ashfield or multiple homes in Alfreton, Ripley, or South Normanton, we make the process easy, reliable, and fully compliant—no hassle, no delays.

Just last week, we carried out a same-day set of inspections for a letting agent in Somercotes, testing multiple appliances across three properties, flagging one minor fault (which we fixed on-site), and issuing digital CP12s before the day was out.

Whether it’s a one-off certificate or a block booking across multiple properties, you’ll get clear communication, fast turnaround, and a fully qualified Gas Safe Registered engineer who understands landlord responsibilities and housing safety requirements inside and out.

Why Choose ISM Plumbing & Heating to do your Gas Safety Certificate (CP12)?

What’s Included in a Gas Safety Certificate (CP12)?

Our CP12 service includes a full inspection and safety check of all gas appliances and installations in your property:

- Visual inspection of all gas appliances and visible pipework

- Tightness test to check for gas leaks

- Ventilation and flue condition checks

- Gas pressure and burner operation testing

- Safety checks on boilers, cookers, hobs, and gas fires

- Immediate reporting of any defects or safety concerns

- Same-day digital CP12 certificate, valid for 12 months

Who We Work With

We provide Gas Safety Certificates for:

- Private landlords

- Letting agents

- Housing associations

- Airbnb/short-term let hosts

- Homeowners (pre-purchase or peace of mind checks)

Whether you're preparing a property for new tenants or keeping up with annual renewals, we offer straightforward compliance without the stress.

Common Appliances We Test

Our Gas Safe engineer will check any and all gas appliances in the property, including:

- Combi, system, and conventional gas boilers

- Gas hobs and cookers

- Gas fires and wall heaters

- Gas meters, valves, and supply pipework

- Flues, vents, and termination points

We’ll clearly explain any issues found and offer practical, fairly priced solutions where needed.

Local, Trusted Gas Safety Across Derbyshire & Nottinghamshire

We’ve worked with landlords, agents, and homeowners across Alfreton, Ripley, Sutton-in-Ashfield, South Normanton, Somercotes, Swanwick, and beyond. Our local knowledge helps us spot common faults and stay efficient—so you’re never waiting around for paperwork or repairs.

Why Choose ISM Plumbing & Heating?

Gas Safe Registered & fully insured
- 15+ years of landlord compliance experience
- Same-day certificates available
- Transparent pricing & no unnecessary upsells
- Available for one-off or multi-property bookings

We don’t just tick boxes—we take safety seriously and get the job done properly, every time.

Real Stories from Local Customers

⭐⭐⭐⭐⭐

“Having contacted Ross after finding his number on yell.com he came out within a couple of hours and fixed the problem. Very professional and reasonable price to. I would definitely recommend.”
— Zoe (via Yell)
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⭐⭐⭐⭐⭐

"I had issues with my boiler. Ross came and gave honest feedback, different options for whether repair or replacement. No pressure or sales tactics, just a nice tradesman who knew what he was talking about. Very happy as we had new boiler installed. Ross was prompt, very tidy and has done a fab job. Thank you."
— Anonymous (via Trusted Trader)
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⭐⭐⭐⭐⭐

"Ross provided fast and friendly service at a very reasonable price for a boiler repair. We were up and running within 24 hours, including ordering the part and a follow-up visit to fit it."
— Ali (via Google)
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