Landlord Gas Safety Certificate (CP12) – Up to 4 Domestic Appliances
Designed for larger residential properties, shared houses, and multi-appliance homes, this comprehensive CP12 gas safety check covers up to 4 gas appliances (e.g. boiler, gas hob, free-standing gas cooker, gas fireplace, or secondary water heater). Conducted strictly in accordance with BS 5440 and Gas Safety Regulations 1998 by accredited Gas Safe engineers.
Comprehensive 4-Appliance Inspection Checklist
- Gas Supply Tightness: Whole-property manometer pressure test ensuring pipework integrity.
- Operating Pressures & Heat Input: Checked against manufacturer data plates across all 4 appliances.
- Flue Gas Analysis & Smoke Clearance: Electronic combustion analysis measuring CO/CO2 ratios and draft pull.
- Safety Interlocks & Pilot Lights: Inspection of thermocouple sensors, flame supervisors, and isolation valves.
- Visual Pipework & Bracket Inspection: Verification of correct pipe support, ventilation, and emergency shut-off accessibility.
Who Requires This Service?
Landlords, estate agents, and property managers letting houses or apartments with multiple gas installations (e.g. a boiler plus gas fire and gas cooking appliances). Holding an up-to-date CP12 protects tenants from carbon monoxide poisoning and guarantees landlord compliance with local authority licensing.
Fast & Reliable Booking Process
- Book Online: Select your date and provide tenant/agent contact details.
- On-Site Inspection: Our engineer tests all 4 appliances and pipework thoroughly.
- Digital Certificate Delivered: Receive your official Gas Safe CP12 PDF within 24 hours.
Need assistance or have special access requirements? Call our compliance desk on 020 8432 3282.







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