36+ years. 1,000+ boiler installations. One Gas Safe registration number: 575142.
If you are a landlord in Sussex or Surrey, those numbers should matter to you. In 2026, the rental market is more regulated than ever. Compliance isn't just a "nice to have" — it's the difference between a profitable portfolio and a legal nightmare.
At Boilers On-Demand (Coventry Plumbing Ltd), we don't do corporate fluff. We don't operate out of a faceless call centre in another part of the country. We are local experts who have been on the tools since 1988. We know that as a landlord, you want three things: your property to be safe, your tenants to be happy, and your paperwork to be bulletproof.
This guide breaks down everything you need to know about the CP12 certificate in 2026, from the actual landlord gas safety certificate cost to the new legal landscape facing owners in the South East.
What is a CP12 and Why Does It Matter in 2026?
A Landlord Gas Safety Record, commonly known as a CP12 certificate, is a legal requirement under Regulation 36 of the Gas Safety (Installation and Use) Regulations 1998. It's not a suggestion; it's the law.
Every 12 months, you must have a gas safety check carried out on every gas appliance, flue, and pipework installation in your rental property.
The 2026 Legal Shift
By 2026, the legal framework for tenancies has shifted. With the removal of Section 21 "no-fault" evictions, your compliance record is your strongest asset. If your gas safety records aren't up to date, you lose more than just a certificate: you lose the ability to manage your property effectively and could face unlimited fines or even prison time for serious breaches.
Who We Are: The Local Alternative to National Contractors
We aren't the biggest firm in the UK. We don't want to be. We are the most trusted local choice for landlords across East Sussex, West Sussex, and Surrey.
While national companies might send a different sub-contractor every time, we provide consistency. When you book a gas safe engineer in Sussex through us, you're getting decades of local knowledge. We've seen every type of boiler from the old back-boilers of the 80s to the latest high-efficiency Vaillant and Worcester Bosch systems.
Our credentials at a glance:
- Gas Safe Registered: No. 575142
- Experience: 36+ years (established 1988)
- Track Record: Over 1,000 successful boiler installs
- Brands: Specialists in Vaillant, Glow-worm, and Baxi
- Local: Deep roots in towns like Billingshurst, Horsham, and Henfield
What Happens During a Gas Safety Check?
We don't just tick boxes. A proper gas safety check in East Sussex or Surrey involves a rigorous technical inspection. We look at:
- Gas Tightness: Checking the pipework to ensure there are no leaks.
- Appliance Pressure: Ensuring your boiler or gas fire is operating at the correct pressure.
- Flue Flow: Making sure combustion gases are being safely removed from the property.
- Safety Devices: Testing that all cut-off and safety mechanisms are functional.
- Ventilation: Confirming there is enough air for the appliance to burn gas safely.
If we find an issue, we tell you straight. No jargon, just the facts and a clear path to fixing it properly.
Understanding the Landlord Gas Safety Certificate Cost
Transparency is our policy. You shouldn't have to guess what you're paying. In 2026, the typical landlord gas safety certificate cost in the Sussex and Surrey region falls between £60 and £90 for a standard property with one or two appliances.
Factors that influence the price include:
- Number of Appliances: A boiler plus a gas hob and a gas fire will cost slightly more than a boiler alone.
- Property Type: Large HMOs (Houses in Multiple Occupation) require more extensive checks.
- Remedial Work: If a safety device is broken, it will need to be replaced to pass the check.
We offer competitive rates because we are local. We aren't driving from London to get to your property in Petworth; we're likely already just down the road.
Common Compliance Mistakes (And How to Avoid Them)
Even experienced landlords fall into these traps. Here is how to keep your record clean:
1. Missing the 28-Day Window
You must provide a copy of the CP12 to your existing tenants within 28 days of the check. For new tenants, they must have a copy before they move in. We provide digital certificates as standard, making it easy for you to email them over instantly.
2. The "MOT-Style" Timing
You don't have to wait until the last minute. You can have your gas safety check done up to two months before the current one expires without losing your "anniversary" date. It works just like a car MOT. We help our clients stay ahead of the curve by sending reminders well in advance.
3. Using Unregistered Labour
Never assume a plumber is Gas Safe registered. Always check the ID card. Our engineers carry their cards at all times (No. 575142), ensuring you are fully covered legally.
Serving the Heart of Sussex and Surrey
We know the local geography because we live here. From the rural cottages of West Chiltington to the modern apartments in Horsham, we cover a broad area with the same punctual, clean service.
Our core service areas include:
- West Sussex: Billingshurst, Horsham, Henfield, Steyning, Petworth, and Storrington.
- East Sussex: Covering the wider regional areas for landlords who need reliable certification.
- Surrey: Extending our expertise to homeowners and landlords across the county border.
Why Boilers On-Demand?
We know you have choices. You could call a national giant or find a "cheap" fix online. Here is why landlords stay with us for decades:
- Reliability: We show up when we say we will. No "between 8 AM and 6 PM" windows that waste your (or your tenant's) day.
- Cleanliness: We treat your rental property like our own home. No boots on carpets, no mess left behind.
- Manufacturer Guarantees: If your boiler needs replacing, we offer up to 12-year guarantees on top-tier brands like Vaillant.
- Old-Fashioned Values: We believe in word-of-mouth. If we do a bad job, our reputation in Sussex suffers. We've been here since 1988 by doing things properly.
Frequently Asked Questions
- How much does a landlord gas safety certificate cost in Sussex and Surrey in 2026?
- A CP12 for a standard property with one or two gas appliances typically costs between £60 and £90 in the Sussex and Surrey region. The exact price depends on the number of appliances, the property type, and whether any remedial work is needed.
- How often do landlords need a gas safety check?
- Every 12 months. A gas safety check must be carried out on every gas appliance, flue, and pipework installation in your rental property at least once a year under the Gas Safety (Installation and Use) Regulations 1998.
- When must I give tenants a copy of the CP12?
- Existing tenants must receive a copy within 28 days of the check. New tenants must have a copy before they move in. We issue digital certificates as standard so you can forward them instantly.
- Can I renew my certificate early without losing the renewal date?
- Yes. You can have the check done up to two months before the current certificate expires without losing your original anniversary date — it works just like a car MOT. We send reminders in advance so you never miss the window.
- What happens if a landlord does not have a valid CP12?
- Failing to hold a valid gas safety record is a breach of the Gas Safety Regulations and can lead to unlimited fines and, in serious cases, imprisonment. It also undermines your position as a landlord, so keeping records up to date is essential.
Just a Straight Conversation
We don't employ high-pressure salesmen. If you need a CP12 certificate or you're worried about your property's heating system, just give us a call. We'll give you a clear price, a firm date, and the peace of mind that comes with 36+ years of experience.
No hard sell. No corporate jargon. Just expert service from your local heating specialists. Ready to book your 2026 gas safety check? Contact the team at Boilers On-Demand today.