Engineer inspecting boiler during a Landlord Gas Safety Inspection (LGSI)
Last updated on: 02 June 2025

What Is a Landlord Gas Safety Inspection?

A landlord gas safety inspection (LGSI), commonly referred to as a Gas Safety Check, is a legal necessity in the United Kingdom, mandated by the Gas Safety (Installation and Use) Regulations 1998. This regulation ensures that landlords take necessary measures to confirm that all gas appliances, fittings, and flues they provide for their tenants are safe and adequately maintained. The primary objective of gas safety inspection is to safeguard tenants from hazards associated with poorly maintained gas appliances, including gas leaks and carbon monoxide poisoning.

The inspection is carried out by a qualified Gas Safe Registered engineer, who is certified to perform gas safety checks. After the thorough inspection, the engineer issues a Gas Safety Certificate, also known as a CP12. This certificate serves as proof that the gas appliances and installations have been checked for safety and must be provided to tenants within a stringent 28-day timeframe.

Related Article: Understanding the difference between CP12 and a Landlord Gas Safety Certificate.

What Does a Landlord’s Gas Safety Inspection Include?

During the landlord’s gas safety inspection, the engineer undertakes a series of detailed evaluations to ensure every component of the gas system is functioning correctly and safely. The following key tasks are typically performed:

1. Visual Inspection

The engineer examines all gas appliances for any visible signs of wear, damage, or corrosion. This includes checking for loose connections, rust, or any other potential hazards.

2. Operational Checks

Each appliance is tested to ensure it operates efficiently and safely, confirming that ignitions are smooth and that there are no unusual noises or malfunctions.

3. Gas Pressure and Flow Test

The engineer measures the gas pressure at the appliance to ensure it is operating within the manufacturer’s recommended specifications. This step is crucial for providing efficient and safe operation.

4. Flue and Chimney Examination

The engineer inspects flues and chimneys to verify that combustion gases are effectively vented outside, ensuring no harmful gases enter the living space.

5. Ventilation Assessment

Adequate ventilation is critical for safe appliance operation. The engineer evaluates the airflow around gas appliances to confirm that there is sufficient ventilation to prevent the buildup of dangerous gases.

6. Leak Detection

Specialised equipment is used to identify any gas leaks in the system. Detecting leaks early is vital to preventing dangerous situations.

7. Safety Device Testing

Essential safety devices, such as Flame Failure Devices (FFDs) and carbon monoxide alarms, are tested to ensure they are functioning correctly and are ready to respond in the event of a malfunction. These comprehensive checks not only fulfil legal requirements but also play a significant role in safeguarding the health and well-being of tenants.

How to Prepare for a Gas Safety Inspection

Proper preparation can significantly enhance the efficiency of the gas safety inspection. Here are several steps landlords can take:

Access

Ensure that all gas appliances and meters are easily accessible for the engineer. This might involve moving furniture or clearing any obstacles that may hinder access.

Documentation: Gather any appliance manuals or previous maintenance records that can provide relevant information to the engineer during the inspection.

Adult Presence

An adult aged 18 or over must be present during the inspection. This ensures that any questions or issues that arise can be adequately addressed.

Previous Certificates

Having past Gas Safety Certificates available can be helpful for reference and to demonstrate a history of compliance with safety inspections. By following these preparation steps, landlords can help the engineer perform a thorough and effective inspection without unnecessary delays.

Verifying Your Gas Safe Engineer

To ensure the safety and reliability of the inspection, it is crucial to verify the credentials of the engineer.

Details to Check

Gas Safe ID Card Front Details

ID Card: Always request to see the engineer’s Gas Safe Register ID card. This is an official document that certifies their ability to work on gas appliances.
Photo Match: Ensure that the photo on the ID card matches the individual who is performing the inspection.
Validity Dates: Verify that the validity dates on the ID card are current, ensuring the engineer is up to date with their registration.
Licence Number: The engineer’s licence number should be present and can also be referenced on the Gas Safe Register website. Through these checks, landlords can ensure they hire a qualified professional capable of conducting a thorough gas safety inspection.

Frequency of Gas Safety Inspections

According to legal requirements, landlords must:

Conduct an annual gas safety inspection

This must occur every 12 months to ensure ongoing safety and compliance. Provide tenants with a copy of the Gas Safety Certificate: Tenants must receive this critical document within 28 days of the inspection, ensuring they are aware of the safety status of appliances in their residence.

The Landlord must provide tenants with a copy of the Certificate

Tenants must be provided this document to ensure they are aware of the safety status of appliances in their residence.

Retain records of inspections

Landlords are obligated to keep records of all safety inspections for a minimum of two years, which may be needed for audits or legal purposes. Regular and timely inspections are not just a bureaucratic requirement; they are essential for ensuring the ongoing safety of tenants and compliance with legal standards.

Consequences of Non-Compliance

Failing to conduct annual gas safety checks can lead to serious consequences for landlords, including:

Legal Penalties

Landlords who neglect their legal obligations risk facing significant fines or even imprisonment, depending on the severity of the offence.

Invalidated Insurance

In the event of a claim, insurance providers may refuse to pay out if the landlord has not complied with gas safety regulations, potentially leaving them financially vulnerable.

Tenant Endangerment

Most critically, non-compliance puts tenants at risk of gas leaks, carbon monoxide poisoning, and other hazardous situations, compromising their health and safety. Thus, compliance with gas safety regulations is not merely a legal obligation but a vital measure to protect the well-being of tenants and the integrity of the rental property.

Need Assistance with Your Gas Safety Certificate?

At 24|7 Home Rescue, we understand the importance of maintaining safety compliance. We offer a comprehensive range of services, including:

Annual Gas Safety Checks

Our certified Gas Safe engineers conduct Gas Safety Check to ensure that your gas appliances meet the highest safety standards.

Comprehensive Reports

Following the inspection, we provide detailed reports that outline our findings, along with recommendations for any necessary repairs or maintenance.

Hassle-Free Scheduling

We offer flexible appointment times to fit your busy schedule, ensuring that inspections are convenient and timely. Ensure your property remains compliant and safe for tenants by learning more about our Gas Safety Certificate services today. Your commitment to safety not only fulfils legal requirements but also builds trust with your tenants.

Posted by: Martin Astley 15 August 2016