Which certificate do I need?

NexCert's 15 certificate types cover electrical, gas, domestic fire alarm and ventilation work; find your trade below, then open the certificate page for the type you need.

Last checked: 18 October 2026

Electrical (7)

Issued under BS 7671:2018+A4:2026.

EIC: Electrical Installation Certificate, full form, with separate Design, Construction and Inspection signatories.
EIC-D: Electrical Installation Certificate, domestic short form, with a single signatory block.
EICR (domestic): Electrical Installation Condition Report for domestic installations up to a 100 A supply, with a 12-section schedule.
EICR (commercial): Electrical Installation Condition Report for commercial installations.
MW: Minor Electrical Installation Works Certificate.
VI: Domestic Visual Condition Report.
DN: Electrical Danger Notice, which notifies the responsible person of danger present (C1) and the action taken. It is raised automatically from a C1 on an EICR or Visual Condition Report. It is described on the certificate catalogue.

Fire alarm (2)

Domestic systems only, under BS 5839-6:2019+A1:2020.

Fire alarm, design, installation and commissioning: domestic systems, under BS 5839-6.
Fire alarm, service and maintenance: domestic systems, under BS 5839-6.

Ventilation (1)

Ventilation commissioning: under Approved Document F, Volume 1, 2021 edition.

Gas (GSIUR 1998)

Issued under the Gas Safety (Installation and Use) Regulations 1998.

CP12: Landlord Gas Safety Record: statutory annual, with a copy to the tenant within 28 days.
CP14: Warning/Advice Notice: Immediately Dangerous (ID) or At Risk (AR).
CP2: Domestic Gas Service Record: annual, not a statutory record, commonly required for insurance or warranty.
CP17: Commercial Gas Installation Safety Report, which includes tightness testing and purging.
CP42: Commercial Catering Gas Safety Certificate, under GSIUR 1998 and BS 6173, with an interlock check on new installs.

Still unsure?

Each certificate page above describes what that certificate records. Which one a particular job needs is for the qualified person doing the work. The full certificate catalogue shows all fifteen side by side. For how often each is due, see how often each certificate is due.

/ FAQ

Common questions

How many certificate types does NexCert issue?

Fifteen: seven electrical, two fire alarm, one ventilation and five gas.

Which certificate is the landlord's annual gas record?

The CP12, the Landlord Gas Safety Record. See what a CP12 is.

Do the fire alarm certificates cover commercial systems?

No. NexCert's fire alarm certificates cover domestic systems under BS 5839-6 only.

Can this page tell me which certificate my job needs?

No. It describes each certificate. Which one applies to a specific installation or job is for the qualified person doing the work.

Join the waitlist

NexCert is in private development. Join the waitlist and we'll email you when it opens.

Join the waitlist →

Join waitlist →