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Gas Safety Certificate London: Complete Landlord Guide 2024
7 December 2024 · 8 min read · By Aza & Sons Team
As a London landlord, gas safety certificates are a legal requirement. Learn what's involved, what it costs, and how to stay compliant with the law.
Gas safety certificates, also known as CP12 certificates, are a legal requirement for all landlords in England. This guide explains everything you need to know about gas safety checks for rental properties in London.
What is a Gas Safety Certificate?
A Gas Safety Certificate (CP12) is an official document confirming that all gas appliances, fittings, and flues in a rental property have been checked and are safe for use. It's issued by a Gas Safe registered engineer after a successful inspection.
Legal Requirements for Landlords
Under the Gas Safety (Installation and Use) Regulations 1998, landlords must:
- Arrange annual gas safety checks on all gas appliances and flues
- Use a Gas Safe registered engineer for all checks
- Keep records for at least 2 years
- Provide a copy to tenants within 28 days of the check
- Provide a copy to new tenants before they move in
Penalties for Non-Compliance
Failing to comply with gas safety regulations can result in:
- Unlimited fines in the Magistrates' Court
- Up to 6 months imprisonment
- Manslaughter charges if a tenant dies from CO poisoning
- Voided landlord insurance
- Difficulty with mortgage and legal issues
- Tenant compensation claims
What's Checked During a Gas Safety Inspection?
Gas Appliances
- Boilers
- Gas fires
- Gas cookers and hobs
- Gas water heaters
For Each Appliance
- Correct operation and safety
- Adequate ventilation
- Working safety devices
- Integrity of flue and chimney
- Proper gas pressure
- No gas leaks
- Correct installation
Pipework
- Visible gas pipes for damage
- Connections and joints
- Emergency control valve
CP12 Costs in London 2024
| Number of Appliances | Typical Cost |
|---|---|
| 1 appliance | £60-£80 |
| 2 appliances | £70-£90 |
| 3 appliances | £80-£100 |
| 4+ appliances | £90-£120 |
Prices may vary by area and engineer.
How Long Does a Gas Safety Check Take?
Typically 20-30 minutes per appliance. A property with a boiler and gas hob usually takes 30-45 minutes total.
When Should You Arrange the Check?
- 12 months from the previous check (at the latest)
- Before a new tenant moves in if no valid certificate exists
- Before the current certificate expires
Tip: Book 2-3 weeks before the expiry date to ensure continuity and allow time for any repairs if needed.
What If an Appliance Fails?
If a gas appliance is deemed unsafe, the engineer will:
- Classify the risk: Immediately Dangerous (ID), At Risk (AR), or Not to Current Standard (NCS)
- Disconnect dangerous appliances immediately
- Issue a warning notice for At Risk issues
- Recommend repairs before issuing a certificate
You must repair or replace faulty appliances before a certificate can be issued.
Multiple Properties?
For portfolio landlords, consider:
- Bulk booking discounts with your engineer
- Alignment of check dates for easier management
- Property management software to track certificates
- Calendar reminders for renewals
Tenant Rights and Responsibilities
Landlord Must:
- Arrange and pay for annual checks
- Provide certificate copy within 28 days
- Keep the property safe
- Arrange repairs promptly
Tenant Should:
- Allow access for safety checks
- Report gas issues immediately
- Not block ventilation
- Not tamper with gas appliances
What About Tenant-Owned Appliances?
If a tenant brings their own gas appliance (e.g., cooker):
- You're not legally required to check it
- You should include a clause in the tenancy agreement
- Consider having it checked anyway for liability protection
- The flue (if applicable) is still your responsibility
Emergency Situations
If there's a suspected gas leak:
- Open windows
- Don't use electrical switches
- Turn off gas at the meter
- Leave the property
- Call National Gas Emergency: 0800 111 999
Book Your Gas Safety Check
Aza & Sons provides efficient, affordable gas safety certificates across London. Our Gas Safe registered engineers offer:
- Competitive fixed pricing
- Same-week appointments
- Certificate issued immediately
- Digital and paper copies
- Multi-property discounts
Call 07955014805 to book your landlord gas safety check today.