A COC certificate (Certificate of Compliance) is a legal document that certifies that the plumbing or electrical work carried out in a building is in compliance with the regulations and standards set by the relevant regulatory authority.

For plumbing work, a licensed plumber must conduct the inspection and certify that the work was done in compliance with the relevant regulations and standards. The certificate will typically cover the installation of pipes, valves, fixtures, and drainage systems, among other things. It confirms that the work was carried out according to the appropriate standards and that the plumbing system is safe and fit for purpose.

For electrical work, a qualified electrician must conduct the inspection and certify that the work was done in compliance with the relevant regulations and standards. The certificate will typically cover the installation of electrical wiring, switches, sockets, and other electrical components. It confirms that the work was carried out safely and to the required standards, and that the electrical system is safe and fit for purpose.

COC certificates are important because they provide assurance to the building owner or occupier, and any other stakeholders, that the plumbing or electrical work has been done to a high standard and that the system is safe and compliant with the relevant regulations.