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Professional Consultant's Certificate vs a structural warranty

A Professional Consultant’s Certificate records specified assurances and obligations from a qualified consultant; a structural warranty provides the insurance and other protection stated in its policy. They are not equivalent, and a lender may accept one arrangement but not the other.

Establish the required protection before work starts rather than choosing a certificate solely because its initial cost appears lower. [1] [2] [3]

What the consultant is certifying

The UK Finance form concerns a consultant who has visited the property during construction and gives the specified confirmations about the work. It requires appropriate experience and professional indemnity insurance, together with the relevant professional eligibility. It is not a form that any builder or designer can sign simply because they know the property. [1]

The published certificate describes responsibility to the first and subsequent purchasers and lenders for a six-year period from the certificate date. That is a feature of the certificate; it should not be treated as a statement that every possible legal claim relating to the building expires after six years. [1]

Agree the appointment, inspection access and record-keeping while work is visible. A request made only after completion may leave the proposed signatory unable to give the required confirmations on an informed basis. This follows from the form's construction-stage visit and certification requirements. [1]

How a claim differs from an insurance claim

The Construction Industry Council's briefing explains that a certificate can give the purchaser and lender a basis for pursuing the consultant where its assurances were not properly made. That is not the same as the homeowner directly holding a structural-damage policy. Establishing the claim and the relevant responsibility may still be necessary. [2]

Professional indemnity insurance supports the consultant's insured professional liabilities, subject to its terms. It should not be described as automatic payment to the homeowner whenever a defect appears. [2]

A structural warranty instead provides the protection set out in its policy. For example, NHBC's published description distinguishes the initial builder-warranty period from later insurance for specified damage. That does not mean every defect is covered without conditions, but the route is different from relying on the consultant's certificate. [4]

Check lender acceptance before making the choice

UK Finance's handbook guidance leaves requirements to individual lenders. Ask the relevant lender or conveyancer to confirm acceptance of the proposed certificate form, consultant and project circumstances, or the proposed warranty. Do not assume that acceptance by one lender establishes acceptance by all others. [3]

Keep the confirmation with the project documents. For a development intended for sale, discuss the implications for the proposed sales and funding arrangements before treating either option as settled.

Neither replaces statutory approval

Building regulations approval and completion evidence remain separate. A consultant's certificate is not the council's or regulator's completion certificate, and a warranty is not planning permission. Keep the documents clearly labelled in the handover pack so their different purposes are not confused. [5] [6] [1]

The Building Safety Act 2022 also contains a statutory new-home warranty framework. Check the operative statutory requirements before relying on a PCC as the only protection for a future transaction. The appropriate choice depends on the legal, lender and contractual requirements, not merely on the document's name. [7]

Sources 7 references
[1]
Professional Consultant's Certificate

UK Finance · accessed 2 Oct 2026

[4]
Buildmark cover for homeowners

NHBC · accessed 2 Oct 2026

[6]
When is permission required?

MHCLG · accessed 2 Oct 2026

[7]
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