Top Mistakes Landlords Make When Getting a Gas Safety Certificate

For every landlord in the UK, getting a Gas Safety Certificate is not only a legal duty but also an important part of keeping tenants safe. Yet many landlords still make errors during the process. These mistakes lead to delays, failed inspections, unnecessary costs, and sometimes even legal trouble. At Gas Safety Certificates London, we see these issues every day when helping landlords across the city.

In this guide, we explain the top mistakes landlords make when getting a Gas Safety Certificate and how you can avoid them. These simple tips will save you time, money, and stress.

1. Leaving the Certificate Until the Last Minute

One of the most common mistakes landlords make is waiting too long. Gas Safety Certificates must be renewed every 12 months. When landlords delay the inspection, they risk going past the expiry date.

If the certificate expires, the landlord may face legal penalties. In some cases, tenants may refuse entry or you may be unable to renew a tenancy agreement. Last-minute bookings also make it harder to find a qualified engineer.

How to avoid it: Book your Gas Safety Check at least 4–6 weeks before the expiry date. This gives you enough time in case repairs are needed.

2. Hiring Unregistered or Unqualified Engineers

Some landlords try to save money by hiring cheaper engineers. But only a Gas Safe registered engineer can issue a Gas Safety Certificate in the UK. Using an unregistered person is illegal and unsafe.

Unqualified engineers may miss gas leaks, boiler issues, ventilation problems, or other dangers. If something goes wrong, the landlord is fully responsible.

How to avoid it: Always check the engineer’s Gas Safe ID card. At Gas Safety Certificates London, all our engineers are fully registered and skilled in landlord certifications.

3. Not Preparing the Property for Inspection

A Gas Safety Check is not complex, but engineers need clear access to all gas appliances. Many landlords forget to prepare the property. This leads to delays or even failed inspections.

Blocked boilers, locked cupboards, or cluttered storage rooms can stop the engineer from doing their job. Tenants may also forget to allow access if they are not informed in advance.

How to avoid it: Tell your tenants the date of the inspection at least 24–48 hours before. Ask them to clear pathways and provide access to all appliances.

4. Ignoring Small Faults Until It’s Too Late

Some landlords notice small boiler problems but decide to wait until the inspection. This is a mistake. Even small issues like low pressure, unusual noise, or weak heating can lead to a failed safety check.

If the engineer finds a problem, it must be fixed before the certificate can be issued. This means extra visits, repair fees, and delays.

How to avoid it: Fix small faults early. Regular boiler servicing will also help keep appliances in good condition and ready for inspection.

5. Not Checking All Gas Appliances

Many landlords assume that only the boiler needs checking. But the Gas Safety Certificate covers all gas appliances in the property. This includes cookers, gas fireplaces, pipework, and flues.

If even one appliance fails, the certificate cannot be issued. Some landlords even forget that old or unused appliances still count.

How to avoid it: Make a list of all gas appliances in the property and ensure they are all ready for inspection.

6. Poor Communication With Tenants

Communication problems with tenants are a major cause of delays. If tenants refuse entry, forget the appointment, or block access, the landlord cannot get the certificate on time.

This can lead to legal issues and strain the relationship between landlord and tenant.

How to avoid it: Send reminders through text or email. Let your tenant know why the check is important and how long it will take. A well-informed tenant is more cooperative.

7. Trying to Perform Gas Checks Yourself

Some landlords think they can check appliances on their own to save money. This is illegal and extremely dangerous. Gas work must only be done by trained and registered professionals.

DIY inspections not only put lives at risk but also invalidate the certificate process.

How to avoid it: Always use a qualified Gas Safe engineer. Never attempt to open or repair gas appliances yourself.

8. Misplacing Previous Gas Safety Certificates

Landlords must keep a record of Gas Safety Certificates for at least two years. Many landlords lose their old documents, which creates issues during audits or property management checks.

Tenants also have the right to see the latest certificate. If you cannot provide it, this can lead to complaints or legal problems.

How to avoid it: Store digital copies. At Gas Safety Certificates London, we provide PDF versions so you can keep them safe on your phone or email.

9. Not Fixing “At Risk” or “Unsafe” Items Quickly

Sometimes an engineer will mark an appliance as “At Risk” or “Immediately Dangerous.” Some landlords delay repairs because they think they can still get the certificate. This is not true.

The Gas Safety Certificate will not be issued until all unsafe items are fixed.

How to avoid it: Act fast. Unsafe gas appliances can cause carbon monoxide leaks, fires, or explosions. Repair them immediately.

10. Choosing the Cheapest Service Instead of the Best

Many landlords look for the cheapest possible Gas Safety Certificate. While cost matters, the lowest price often means poor service, rushed inspections, or hidden fees.

Low-quality checks increase the chances of missed issues and repeat visits.

How to avoid it: Choose a trusted company with good reviews, clear prices, and certified engineers. Gas Safety Certificates London offers affordable and reliable inspections across London.

Final Thoughts

Avoiding these common mistakes makes the Gas Safety Certificate process smooth, quick, and stress-free. As a landlord, your main role is to ensure your property is safe for your tenants. By planning ahead, choosing the right engineer, and maintaining your gas appliances, you can stay compliant and avoid unnecessary problems.

At Gas Safety Certificates London, we help landlords get their certificates with ease. Our trained Gas Safe engineers provide fast inspections, clear reports, and support throughout the process.