You’re not thinking about paperwork when you get your conservatory roof replaced. You’re thinking about not freezing in there every winter. But a few years down the line, when you come to sell the house, a buyer’s solicitor will ask a very specific question: do you have a Building Regulations Certificate for that roof? If the answer is no, or you’ve genuinely never heard of one, it’s worth understanding why that question gets asked before it holds up your sale.
Why this is different from planning permission?
People often mix up planning permission and building regulations, and it’s an easy mistake to make since both involve official sign off on building work. Planning permission is about whether you’re allowed to build something at all, considering things like size, appearance and impact on neighbours. Most straightforward conservatory roof replacements don’t need it, since they usually fall under permitted development rules, which you can read more about in our guide on planning permission for a conservatory roof replacement.
Building regulations are a completely separate matter. They’re about whether the work meets minimum standards for things like structural safety, fire safety, ventilation and thermal performance, regardless of whether planning permission was needed. A conservatory roof replacement can be entirely exempt from planning permission and still trigger building regulations, particularly when you’re upgrading from a single skin glass or polycarbonate roof to an insulated tiled or solid one, since that changes the thermal performance of the structure.
What a building regulations certificate actually is?
Once building control has assessed and signed off the finished work, either through the local authority’s own building control department or a private approved inspector, you should receive a completion certificate. This is the document that proves the work meets current standards, and it’s the piece of paper a solicitor is really asking about when they mention a “building regs certificate” for your conservatory roof.
This is a separate process from an installer using a pre-approved system design. A roof system that carries full LABC and LABSS approval, such as the Guardian Warm Roof, has already had its design assessed and accepted as meeting building regulations, which tends to make the sign off process on your specific installation more straightforward. But that design approval isn’t the same thing as your own completion certificate. You still need building control involved in your actual installation, and you still need a certificate issued at the end confirming that your specific roof was signed off. An installer that holds Team Guardian Approved Fabricator status should be able to explain exactly how this works for your job and should arrange it as a normal part of the installation, not as an optional extra you have to ask for.
Why solicitors and buyers actually care?
When you sell a house, you’ll fill in a property information form that specifically asks about alterations, including conservatories and any changes to their structure, and whether building regulations approval was obtained. If you tick yes but can’t produce the certificate, or you’re honest that you don’t have one, it becomes a genuine sticking point in the sale.
Buyers’ solicitors care because they’re protecting their client from inheriting a problem. If work wasn’t properly signed off, there’s a risk it wasn’t done to standard, and a lack of certification can occasionally raise questions about insurance too, since some buildings insurers ask about unauthorised or uncertified structural work when you take out a policy. In practice, most buyers won’t walk away from a purchase over a missing conservatory roof certificate, but it’s common for it to hold up completion while solutions are worked out, or for a buyer to ask for indemnity insurance or a price reduction to cover the risk.
What to do if your roof doesn’t have a certificate?
This comes up more often than you’d think, particularly with roofs replaced ten or more years ago when building control involvement for this kind of work was, frankly, less consistently enforced than it is now. If you’re in this position, you’ve got a few realistic options.
The first is to contact the installer who did the original work, if the company still exists, since they may hold records of the sign off even if you’ve misplaced your own paperwork. The second is to approach your local authority building control department directly. In some cases, they can carry out what’s called a regularisation inspection, assessing the existing roof against current standards and issuing a certificate retrospectively if it passes, though this isn’t guaranteed and depends on the work being accessible and in a condition that can actually be inspected.
Where neither of those routes works, indemnity insurance is the fallback most conveyancing solicitors will suggest. It’s a one off policy that protects the buyer against the financial risk of the missing certificate, rather than resolving the underlying paperwork gap. It’s relatively inexpensive and widely used for exactly this situation, but it’s worth being upfront about needing it as early in the sale process as possible, rather than letting it surface as a last minute surprise once a buyer’s solicitor raises it.
Getting it right the first time
If you’re getting a conservatory roof replaced now, the simplest way to avoid all of this later is to make sure building control sign off is part of the job from the outset, not something you have to chase afterwards. Ask your installer directly, before work starts, how building regulations approval will be handled for your specific property and when you should expect to receive your completion certificate. A reputable installer will have a clear, confident answer to that question, because it’s a routine part of doing the job properly, not an unusual request.
Keep the certificate somewhere safe once it arrives, ideally with your other house deeds and paperwork, since it can be years before you need it again, and it’s far easier to produce it on request than to go looking for it, or for the installer, once you’re mid sale.
Frequently Asked Questions
Does every conservatory roof replacement need a building regulations certificate?
Not every single one, but most upgrades from a single skin glass or polycarbonate roof to an insulated tiled or solid roof do, since that change affects the structure’s thermal performance. A straightforward like-for-like glass panel swap is more likely to be exempt, but it’s worth confirming with your installer rather than assuming.
Can I get a certificate for work I didn’t have signed off at the time?
Sometimes, through a local authority regularisation inspection, though it isn’t guaranteed and depends on the work being inspectable now. Indemnity insurance is the more common fallback when a retrospective certificate isn’t possible.
Will a missing certificate stop my house sale completely?
Not usually on its own, but it commonly causes delays while a solution, such as indemnity insurance, is arranged. It’s far easier to sort out before you put the house on the market than once you’re in the middle of a sale.
How long does a completion certificate stay valid?
Indefinitely, in the sense that it doesn’t expire, but you should still keep the physical or digital copy safe, since replacing a lost certificate later can mean going back to your local authority’s records, which isn’t always straightforward for older work.