Many buyers only discover the issue after a survey, valuation or legal review identifies that alterations have been completed without the appropriate consents. In some cases the lender will proceed; in others the application is delayed, restricted or declined altogether.
At AF Credit, we specialise in helping buyers purchase properties that mainstream lenders struggle to finance — including properties without Building Regulations approval, structural issues, short leases, non-standard construction, damp, fire damage and other mortgage-restricted assets.
Yes, but it depends on the type of works, when they were completed, the lender's policy and the surveyor's comments. For minor historic works, many lenders will accept indemnity insurance. For significant structural alterations, lenders typically require more — structural engineer reports, a Regularisation Certificate or both. Where a lender declines, bridging finance can complete the purchase while the issue is resolved.
What Are Building Regulations?
Building Regulations are legal standards governing construction work in England and Wales. They ensure that building works are safe, structurally sound and energy efficient. Unlike planning permission — which controls whether work is permitted — Building Regulations focus on how work is carried out.
Building Regulations vs Planning Permission
These are two separate approval processes that are frequently confused. A property can have planning permission but no Building Regulations approval, or vice versa. Both may be required for a given project. Many mortgage problems arise specifically from missing Building Regulations — even where planning permission was properly obtained.
Which Works Commonly Cause Mortgage Problems?
One of the most common issues. Without Building Regulations approval, a lender may refuse to recognise the loft space as habitable accommodation — affecting the valuation and mortgageability.
Structural alterations without Building Regulations approval create serious lender concerns. Evidence of proper structural support — typically a structural engineer report — is usually required.
Extensions built without approval often trigger additional enquiries. Lenders want confidence that the structure meets minimum safety and insulation standards — which Building Regulations approval confirms.
Lenders often want confirmation that garage conversions were completed to the appropriate insulation, structural and fire safety standards — which requires Building Regulations sign-off.
Can You Get Indemnity Insurance?
Often, yes. Building Regulations indemnity insurance is commonly used where the works are historic, no enforcement action has been taken and the local authority has not been approached about the works. Indemnity insurance protects against the risk of enforcement action — but it does not confirm that the works were completed correctly or safely.
Many buyers assume indemnity insurance confirms the works are safe. It does not. The insurance addresses the legal risk of enforcement — not whether the construction was done correctly. For structural works, lenders will often require a structural engineer's report in addition to indemnity insurance.
Can You Get Retrospective Building Regulations Approval?
In many cases, yes. A Regularisation Certificate can be obtained by applying to the local authority, which may inspect the works and require parts of the construction to be exposed before issuing approval. The process can be time-consuming but may resolve lender concerns entirely — effectively restoring the property's mortgageability.
What Happens If Your Mortgage Is Declined?
A decline does not necessarily mean the property cannot be purchased. Many lenders simply require the issue to be resolved before they will lend. Once the appropriate approvals, reports or certification have been obtained, the property may become suitable for mainstream mortgage finance — creating an opportunity for buyers using bridging finance to complete the purchase while the process is worked through.
How AF Credit Can Help
AF Credit specialises in financing properties that mainstream lenders decline. We regularly assist buyers purchasing properties without Building Regulations approval, uncertified loft conversions, properties with structural alterations and other certification issues. Where a clear strategy exists to regularise, certify or refinance the property, we can often provide bridging finance.
Survey reports, legal information and details of the works involved, the proposed remediation strategy — whether indemnity insurance, structural engineer report or Regularisation Certificate — and a clear exit route through conventional mortgage finance once the issue is resolved.
Example
A buyer agrees to purchase a property for £350,000. The lender's valuation identifies a loft conversion completed many years ago but no Building Regulations Completion Certificate can be located.
The lender declines the mortgage pending further investigations. AF Credit provides bridging finance to complete the purchase.
The borrower commissions a structural engineer's report confirming the loft structure meets current standards and obtains a Regularisation Certificate from the local authority. The property is subsequently refinanced onto a conventional mortgage.
Frequently Asked Questions
Can you get a mortgage without Building Regulations approval?
Yes, depending on the nature of the works and the lender's requirements. Minor historic works with indemnity insurance are often acceptable. Significant structural alterations usually require more. See our unmortgageable property guide for a broader overview.
Will missing Building Regulations stop me getting a mortgage?
Not always. Some lenders will proceed where indemnity insurance is available and the surveyor is satisfied with the property's condition. Significant structural works without approval — particularly removed load-bearing walls or uncertified loft conversions — are more likely to cause problems.
What is a Regularisation Certificate?
A certificate issued by the local authority confirming retrospective Building Regulations approval for works completed without the appropriate consent. Once obtained, it can restore the property's mortgageability and satisfy lender requirements.
Is indemnity insurance enough for missing Building Regulations?
Sometimes — for minor or low-risk historic works. For significant structural alterations, lenders typically require structural engineer reports or a Regularisation Certificate in addition to or instead of indemnity insurance.
Can I buy a property without Building Regulations at auction?
Yes. Auction finance via a bridging loan is commonly used where traditional mortgage funding is unavailable or cannot be arranged within the 28-day deadline.
Does AF Credit lend on properties without Building Regulations?
Yes. AF Credit specialises in financing properties that fall outside mainstream lending criteria — including missing Building Regulations, structural issues, subsidence, non-standard construction and other certification problems. Where there is a clear strategy to resolve the issue and refinance, we can often consider bridging finance.
If your mortgage has been declined because a property lacks Building Regulations approval, or you are considering purchasing a property with certification issues, AF Credit may be able to help. Where there is a clear strategy to resolve the issue and refinance, we can often provide bridging finance to complete the purchase and unlock the property's value.
Get indicative terms