EICR vs Gas Safety Certificate: What Landlords Need

If you let a property in England, you're legally required to hold two separate safety certificates — one for gas, one for electrics — and they're issued under different laws, by different professionals, at different intervals. Mixing them up is a common mistake that ends with landlords either paying twice or, worse, being non-compliant when a tenant complains.

This guide explains the practical difference between an EICR and a Gas Safety Certificate (CP12), what each one covers, how often you need them, and what happens if you don't.

Quick comparison

• CP12 (Gas Safety Certificate): Required annually. Tests gas appliances, pipework, and flues. Issued only by a Gas Safe registered engineer. Legal basis: Gas Safety (Installation and Use) Regulations 1998.
• EICR (Electrical Installation Condition Report): Required every five years (or sooner if specified on the report). Tests the fixed electrical installation — wiring, consumer unit, sockets, switches. Issued by a qualified electrician. Legal basis: Electrical Safety Standards in the Private Rented Sector Regulations 2020.

What a Gas Safety Certificate (CP12) covers

A CP12 is a legal record that every gas appliance in your rental property has been checked and is safe to use. The engineer carries out specific tests on each appliance and on the system as a whole.

What's checked

• Gas tightness across the whole system
• Standing and working gas pressure
• Burner pressure / gas rate where applicable
• Flue flow and combustion analysis (boilers and gas fires)
• Ventilation requirements for each appliance
• Visible condition of pipework, joints, and fittings
• Safety devices on each appliance (flame supervision, oxygen depletion sensors)

The engineer must be on the Gas Safe Register for each appliance type. You can verify any engineer's registration with their seven-digit ID number. We carry full Gas Safe accreditation across all common appliance categories — see our gas safety certificate service for what's included.

How often you need one

Every 12 months. The new certificate must be issued before the previous one expires. There's a small grace window — you can carry out the new check up to two months before the expiry date and the new 12-month period runs from the old expiry, not the inspection date. This stops the cycle drifting earlier each year.

What happens if you miss it

The penalty for failing to hold a current CP12 is unlimited fines and up to six months in prison under the Gas Safety Act. Local authorities pursue prosecutions actively. More commonly, an out-of-date certificate invalidates landlord insurance and prevents you from serving a Section 21 notice to end a tenancy.

What an EICR covers

An EICR is a detailed inspection and test of the fixed electrical installation — everything wired into the building. Portable appliances (kettles, lamps, TVs) are separate and not covered.

What's checked

• The consumer unit (fuse board) and all protective devices
• Earthing and bonding arrangements
• All fixed wiring — circuits, sockets, switches, light fittings
• RCD operation and trip times
• Insulation resistance of every circuit
• Continuity of protective conductors
• Any signs of overheating, damage, or poor workmanship

Each circuit and item is coded. The codes that matter to landlords are:

• C1 (Danger present): Immediate risk of injury — must be made safe immediately
• C2 (Potentially dangerous): Urgent remedial work required, usually within 28 days
• C3 (Improvement recommended): Not urgent but worth addressing
• FI (Further investigation): Needs more detailed checks

Any C1, C2, or FI codes mean the report is "unsatisfactory" and the issues must be fixed within 28 days. The electrician then issues confirmation that the remedial work has been completed.

How often you need one

Maximum every five years, or sooner if the previous EICR specified a shorter interval. Always reissue when:

• You take on a new tenancy in a previously owner-occupied property
• The consumer unit is replaced or upgraded
• Significant rewiring is carried out
• An incident suggests the installation has been damaged

What happens if you miss it

Local authorities can issue penalty notices of up to £30,000 per breach, plus require remedial work to be carried out at the landlord's expense. Like the CP12, an out-of-date EICR will invalidate most landlord insurance policies.

Cost and timing in Peterborough

For a standard three-bed PE property:

• CP12: £60–£90 for one boiler. Add roughly £15–£25 per additional gas appliance (gas hob, gas fire, etc.).
• EICR: £150–£250 depending on the number of circuits and consumer unit access. HMOs and larger properties cost more.

Both certificates are tax-deductible as a normal letting expense. Many landlords schedule them together every fifth year — gas annually, electrics on the same date every five years — to reduce admin and visit fees.

Documentation rules

For the CP12, you must provide a copy to every new tenant before they move in, and to existing tenants within 28 days of each new check. Keep your records for at least two years (recommend longer).

For the EICR, the rules are tighter. You must:

• Give a copy to existing tenants within 28 days of the inspection
• Give a copy to new tenants before they move in
• Give a copy to prospective tenants on request within 28 days
• Provide a copy to the local authority within 7 days if requested

If our team carries out either certificate, we send the PDF to you the same day and keep a record on file for re-issue if you lose it.

If you let multiple properties

Most portfolio landlords stagger their compliance calendar so they're not doing every property in the same month. We offer scheduled landlord services for multi-property portfolios across Peterborough, with reminders sent 60 days before each renewal and consolidated invoicing.

For HMOs (Houses in Multiple Occupation), additional fire safety and electrical requirements apply, and the inspection regime is more frequent. If you're managing an HMO and unsure what's required, get in touch and we'll set out a compliance schedule for your specific property.

How to verify the engineer is qualified

Both certificates are only valid if issued by someone with the right qualifications. Verifying takes a minute and is worth doing every time, even with established contractors:

• For gas (CP12): Ask for the engineer's Gas Safe ID card. It has a seven-digit ID number, a photo, and a list of qualified appliance categories on the reverse. Verify the number free on the Gas Safe Register website. Check that the appliance categories include what's in your property (most domestic boilers need "Central Heating Boilers (CENWAT)" but a gas fire needs separate qualification).
• For electrical (EICR): The electrician should hold City & Guilds 2391 or 2394/2395 (inspection and testing), and ideally be registered with NICEIC, NAPIT, ELECSA, or STROMA. These bodies all let you verify membership online by company name or postcode.

A certificate issued by someone outside these registers isn't legally valid. If anything goes wrong later — a fire, a CO incident, a tenant complaint — your liability is the same as if no certificate existed.

First-time landlord compliance calendar

If this is your first rental, here's the order of operations to get everything in place before you advertise the property:

1. EICR — needs to be current and satisfactory before the tenancy starts. Allow 1–2 weeks for booking plus another week if remedial work is needed.
2. CP12 gas safety check — needs to be current and the certificate handed to the tenant before move-in. Book at least 7–10 days before tenant arrival.
3. EPC (Energy Performance Certificate) — must be rated E or above. Allow a week for booking and report production.
4. Right to Rent checks on prospective tenants — separate from plumbing but essential before tenancy
5. How to Rent guide — give the official government booklet to every new tenant before move-in
6. Deposit protection — register within 30 days of receiving

Missing any of items 1–3 means you can't legally serve a Section 21 notice later, which can dramatically extend any future tenancy ending. We see landlords every year who can't recover their property because of a missed certificate during the original tenancy setup. It's worth getting right the first time.