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Non-Domestic Gas Installation Safety Report (CP17)

A CP17 is a safety inspection report for an entire non-domestic gas installation. It assesses the overall condition of commercial gas pipework, appliances, flues, and ventilation, classifying the installation as satisfactory or identifying defects. It is the commercial equivalent of an EICR for gas, often required for insurance, property transactions, or compliance audits.

Gas Safety (Installation and Use) Regulations 1998, GIUSP IGEM/G/11Valid: Annual (12 months)

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Sample CP17 certificate

Sample Non-Domestic Gas Installation Safety Report (CP17) certificate created with CertBox, showing the professional PDF layout with gas meter and emergency control valve condition, pipework inspection and tightness test, each appliance safety assessment and classification

Sample CP17 with fictional data. All personal details shown are fake.

What it covers

  • Gas meter and emergency control valve condition
  • Pipework inspection and tightness test
  • Each appliance safety assessment and classification
  • Flue condition and ventilation adequacy
  • Gas safety defect identification and coding
  • Overall installation risk rating

Who needs a CP17?

Commercial property owners
Facilities managers
Pre-purchase surveyors

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Frequently asked questions about CP17

Is a CP17 a legal requirement?
There is no standalone regulation mandating a CP17. However, the GSIUR 1998 requires all gas installations to be maintained in a safe condition. Insurance companies, local authorities, and managing agents commonly require periodic CP17 reports for commercial premises.
What qualifications does the engineer need?
The engineer must be Gas Safe registered and hold the relevant non-domestic ACS modules for the appliance types present on site. For large commercial installations, IGEM membership or equivalent experience is also expected.

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