How to Select a Competent Network Cabling Installer

Choose an installer by checking role-relevant vocational qualifications, practical experience, standards knowledge, test capability, quality procedures, insurance and evidence from comparable projects—not price or unsupported claims alone.

A competent contractor should be able to explain how the network will be designed, installed, tested, documented and handed over. Evidence should relate to the actual work rather than a general company statement.

Questions to ask

• What qualifications do the people completing the work hold?

• Which standards will be used?

• Who is responsible for design and quality assurance?

• What test equipment and test methods will be used?

• How will defects and changes be recorded?

• What documentation and warranty will be supplied?

Evidence to request

• Role-relevant qualifications.

• Named competent personnel.

• Comparable project evidence.

• Test-equipment capability and calibration.

• Installation and test specification.

• Quality assurance plan.

• Insurance and applicable approvals.

• Sample test and handover records.

Warning signs

• Unwillingness to provide qualifications.

• Standards named without a clear installation specification.

• Testing offered without defined limits or methods.

• No named responsibility for quality.

• No documentation or labelling plan.

• Price substantially below a realistic compliant delivery cost.

Recommended next step

Prepare a competence and quality schedule before inviting quotations, then assess every bidder against the same evidence requirements.

Knowledge Hub · Find an installer · Verify a record

Reviewed by Paul Forster, COFNII Chairman

Related guidance

Selecting a competent installer · Handover documentation · Membership and competence

Last reviewed: 10 September 2026