Structural Warranty vs Professional Consultant’s Certificate (PCC): Which Do Self-Builders and Small Developers Need?
As a self-builder or small developer, when it comes to choosing between a structural warranty and a Professional Consultant’s Certificate (PCC), the differences matter.
A structural warranty is an insurance-backed policy that pays out for defects without you having to prove anyone was negligent, lasts 10 years (or 12 years in the case of Housing Association warranties), and is accepted by a wide range of lenders.
A PCC is a certificate from a qualified professional confirming the build meets Building Regulations. A PCC lasts 6 years and is often more cost effective than structural warranty but coverage is limited.
These differences come down to what’s being inspected, when and by whom. It’s important for purchasers and lenders alike to note that a PCC does not carry the same weight as a structural warranty for a few reasons:
- The cover period differs
- PCC offers limited coverage in comparison to a structural warranty
- Negligence must be proven on the consultant’s part to claim against a PCC
- A PCC does not protect a purchaser or a lender if the consultant becomes insolvent.
It’s best to consider these factors when making a choice. Exploring them both in more detail will help you make a more informed decision.
Sometimes the less expensive option can cost you the most. Read on to understand the finer details of both types of cover.
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What a Structural Warranty Covers
As explained earlier on, a structural warranty is a type of insurance policy, not a certificate. Before it’s issued, a risk management surveyor inspects the build at defined stages; foundations, damp proofing, structural frame and practical completion.
That surveyor is working for the insurer, not for you or your architect.
If a defect shows up in year six, the warranty provider doesn’t need you to prove whose fault it was because their own surveyor signed off on the build at each stage.
Because of this process, the insurer already carries the risk if something was missed. In a claim, all you have to do is prove the defect exists.
Cover typically runs for 10 years from completion and protects the property, not the owner, and can survive a sale or remortgage. It also protects the build from contractor insolvency.
What a PCC Covers and What it Doesn't
A Professional Consultant’s Certificate (PCC) is a certificate of professional opinion, not an insurance policy. It’s issued by an architect, chartered surveyor or an engineer someone listed in one of the professional bodies named in the UK Finance Mortgage Lenders’ Handbook.
The consultant is personally liable for that opinion for six years, backed by their own professional indemnity insurance rather than a warranty policy.
That’s the part that changes everything downstream: if a defect surfaces, there’s no claims team assessing whether you can claim for it or not. You must prove the consultant’s negligence.
Professional indemnity claims are adversarial by nature; the consultant’s insurer will contest liability, and you’re the one who must carry the burden of proof.
A PCC is usually less expensive to arrange and can be quicker if your consultant is already on site. But it’s only cheaper for a shorter period of cover on a different legal basis. It’s not a discount version of the same thing.
PCC vs Structural Warranty In the UK
To say that one is insurance and the other is a certificate is vague. It’s the finer details that constitute which one is best for your specific project.
The detail that drives lender acceptance and claims outcomes is the inspection criterion behind each one.
During the inspections at each stage the surveyor assesses the same failure patterns that generate claims across thousands of similar builds, because that pattern recognition is what the insurer prices.
PCC inspections are periodic professional opinion visits, timed around the consultant’s availability rather than a fixed schedule. Their inspection doesn’t go further than a few compliance checks. They don’t assess the probability of long-term defect risks.
Both products are strongest when applied before work starts. If you secure a structural warranty or a PCC mid-build, the early-stage inspection process has already lapsed.
At this stage, you can expect higher premiums, a more cautious PCC opinion, or in some cases a provider declining cover altogether because they can’t back a build they haven’t properly inspected. When it comes to the cost of a structural warranty, this guide gives you a better idea of what to expect.
Why Lenders Treat Both Differently
Under Section 6.7 of the UK Finance Mortgage Lenders’ Handbook, lenders generally lend against a newly built or converted property if it’s covered by a 10-year structural warranty. If a warranty isn’t in place, a PCC that is listed in an approved body must be provided.
In practice, lender appetite varies more than that rule suggests. Some high-street lenders accept PCCs without hesitation; others prefer or insist on a warranty, particularly for higher-value schemes or where the PCC would be issued after the build is already in progress.
This is the kind of detail that changes between lenders and between mortgage cycles, so treat any list of lenders that accept PCCs you find online as a starting point, not a guarantee, before you commit to either type of cover.
Pros and Cons of a Structural Warranty vs a PCC
| Your Situation | What Matters Most | Best Cover |
|---|---|---|
| You know your buyer’s lender already, and they’ve confirmed they accept PCCs | Lender certainty | PCC can work, and costs less than structural warranty. |
| You don’t yet know who the eventual buyer’s lender will be | Widest possible acceptance | A structural warranty. It’s accepted by the broadest range of lenders, so you’re not gambling on a future buyer’s mortgage criteria. |
| You’re building speculatively to sell on the open market | Resale flexibility over a 10-year window | A structural warranty because it can survive multiple sales and remortgages without renegotiation. |
| Your consultant is already appointed and inspecting from day one | Cost efficiency for a shorter hold | PCC is a reasonable option if six years’ cover matches your plans |
| You plan to hold, remortgage, or refinance beyond year six | Cover duration | Structural warranty |
| You’re arranging cover partway through the build | Inspection gaps | Talk to a provider before assuming either option is available on standard terms. Mid-build appointments are priced and underwritten differently. |
| A lender has specifically asked for a warranty (not a PCC) | Lender instruction overrides preference | A structural warranty – this is non-negotiable once a lender has stated it. |
*The information provided in this table is for illustrative purposes only and does not constitute financial advice, a formal recommendation, or a definitive endorsement of any specific strategy. It simply serves as a real-world illustration of various considerations and general conceptual factors that may apply in certain contexts.
If more than one row applies and they point in different directions, the lender’s requirement always overrides every other option.
A PCC is usually the most cost-efficient certificate to arrange. But, the fair comparison isn’t PCC price versus the warranty price – it’s cost per year of genuine protection, plus what it costs you if a claim doesn’t go your way.
A warranty claim is assessed against the policy. A PCC dispute often gives rise to a professional negligence claim, and those come with their own heavy legal costs if they don’t resolve quickly. Factor that into the decision, not just the quote.
Where Compariqo Fits In
At Compariqo, our job is to compare structural warranty and PCC options across the market, so that builders and developers don’t have to work it out alone.
We’ve had this exact conversation more times than we can count. If you’re not sure which route your project needs, get in touch before you appoint anyone. We’ll talk it through, compare what’s available for your build, and point you towards the right cover. It’s a quick conversation.
If you wait until after the project has already started only to find out that you’ve got the wrong cover, it can potentially cost you.
Speak to our dedicated team of experts and secure the best cover for your project today.
FAQs
Do I need a PCC for a mortgage?
Not always, it depends on the lender. Most residential lenders will accept a 10-year structural warranty or, where one isn’t in place, a PCC from a consultant listed in an approved professional body under the UK Finance Mortgage Lenders’ Handbook. Some lenders won’t accept a PCC at all, particularly for higher-value or higher-risk schemes, so this should be confirmed with the specific lender before you choose.
Can I get a PCC and upgrade to a structural warranty later?
Some providers offer this, but a later-appointed warranty is priced as higher risk because the early-stage inspections have already passed. It’s worth asking a provider about this upfront rather than assume it’s available on the same terms as a warranty taken out before work starts.
What happens after 6 years with a PCC?
The consultant’s liability ends. If you’re selling, remortgaging, or refinancing after that point, you’ll typically need a retrospective warranty or a fresh certificate, and retrospective cover is often priced higher because of the missed inspection stages.
Is a structural warranty always more expensive than a PCC?
Usually yes, but it’s covering twice the duration on an insurance basis rather than a personal-liability basis, so the comparison isn’t like-for-like on price alone.