Converted properties can offer character, charm and excellent value for money. However, buying a Converted Property can also present legal and mortgage challenges that do not arise with standard residential properties. You should have…
- PCC from an insured architect or engineer who supervised the building work valid for 6 years
- Statutory consents, planning permission, building control, listed building, conservation area consent, landlord consent
- Easements which benefit the property checked and regranted if necessary, from the burdened land owner.
- Link to all major lenders requirements for raising a mortgage on a converted property – here
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Whether you are purchasing a house converted into flats, a barn conversion, or a former commercial building that has been transformed into residential accommodation, it is essential that you out detailed investigations before you exchange contracts.
Mortgage lenders frequently impose stricter lending criteria on converted properties, and defects in title, missing documentation or inadequate rights can delay – or even prevent – a transaction from proceeding.
In this guide, we explain the legal and mortgage issues commonly encountered when buying a converted property and the checks your conveyancer should undertake.
Buying a converted property? We can investigate title issues, lender requirements and any potential defects before you commit to the purchase.
What Is a Converted Property?
A converted property is a building that was originally constructed for one purpose but has subsequently been altered for residential use.
Examples include:
- Houses converted into flats.
- Barns converted into homes.
- Former offices converted into apartments.
- Churches or schools converted into residential accommodation.
- Commercial premises converted under permitted development rights.
Although these properties often provide unique accommodation, conversions can create legal complexities that are not always immediately apparent.
Can You Get a Mortgage on a Converted Property?
Yes, most converted properties are mortgageable. However, lenders generally carry out additional checks and may apply stricter lending criteria.
Mortgage lenders will want to ensure that:
- The conversion was carried out lawfully.
- Appropriate planning permissions were obtained.
- Building Regulations approval was granted.
- The property has adequate rights of access and services.
- The property can be readily sold if repossession becomes necessary.
If these requirements cannot be satisfied, a lender may refuse to lend or require additional protections before releasing mortgage funds.
Why Are Mortgage Lenders Cautious About Converted Properties?
Converted properties can pose greater risks to lenders than purpose-built homes.
Common concerns include:
Missing Planning Permission
Where planning permission should have been obtained but was not, the local authority may have enforcement powers.
Although indemnity insurance may sometimes be available, lenders will often require confirmation that the risk has been adequately addressed.
Lack of Building Regulations Approval
Building Regulations approval confirms that the conversion meets required safety and construction standards.
Without approval, lenders may be concerned about:
- Structural integrity.
- Fire safety compliance.
- Insulation standards.
- Soundproofing.
- Means of escape.
Missing Building Regulations documentation is one of the most common issues encountered in converted property transactions.
Defective Rights and Easements – see McAdams Homes Ltd v Robinson
Converted properties frequently share:
- Accessways.
- Drainage systems.
- Utilities.
- Parking areas.
Your conveyancer must ensure that appropriate legal rights exist for:
Missing or inadequate easements can affect both mortgageability and future resale.
What Is a PCC and Why Does It Matter?
A PCC (Professional Consultant’s Certificate) is commonly used where residential properties have been newly built or substantially converted and no recognised structural warranty is available.
A PCC is typically issued by a qualified professional, such as:
- An architect.
- Surveyor.
- Structural engineer.
The certificate confirms that the professional has monitored the works and believes that the construction substantially complies with approved plans and relevant standards.
Many mortgage lenders will accept a PCC as an alternative to a new-build warranty, although lender requirements vary.
Your conveyancer will check whether:
- A PCC is required.
- The certificate is acceptable to your lender.
- The issuing professional is suitably qualified.
- The certificate complies with lender requirements.
PCC or Structural Warranty: What Is the Difference?
A structural warranty provides insurance-backed protection against specified structural defects, usually for 10 years.
Examples include:
A PCC is not an insurance policy.
Instead, it provides professional confirmation regarding the quality and supervision of the works.
Some lenders prefer a structural warranty, while others are willing to accept a PCC.
Before exchange, your conveyancer must ensure that your lender’s requirements are satisfied.
Legal Checks Your Conveyancer Should Carry Out
When acting on the purchase of a converted property, your conveyancer should investigate a number of additional matters.
Planning Permission
Your conveyancer should confirm that:
- Appropriate planning permissions were obtained.
- Any conditions attached to planning consents have been complied with.
- There are no outstanding enforcement issues.
Particular care should be taken where conversions have been carried out recently.
Building Regulations
Your conveyancer should obtain evidence of Building Regulations approval for the conversion works.
Documents may include:
- Completion certificates.
- Regularisation certificates.
- Approved inspector certificates.
Where documentation cannot be produced, further enquiries may be required.
Title Investigation
The title should be reviewed carefully to ensure:
- Adequate rights of access exist.
- Rights for services are granted.
- Repair obligations are clearly defined.
- There are no adverse restrictions affecting use.
Lease Review
Where the property is leasehold, your conveyancer should consider:
- The remaining lease term.
- Repair and maintenance provisions.
- Service charge arrangements.
- Insurance obligations.
- Rights over common areas.
Poorly drafted leases are particularly common – and a grant of a new residential long lease will soon be outlawed entirely
Common Problems Found in Converted Flats
Properties converted into flats often present additional risks.
Typical issues include:
Inadequate Fire Safety Provisions
Lenders may require evidence that appropriate fire safety measures have been installed.
Examples include:
- Fire doors.
- Fire-resistant construction.
- Protected escape routes.
Defective Leases
Older conversions sometimes contain leases that fail to:
- Allocate repair responsibilities.
- Grant adequate rights.
- Require contributions towards maintenance.
A defective lease can affect both mortgageability and resale.
Flying Freeholds
Some converted properties include flying freehold arrangements.
Although many lenders will lend on flying freeholds, additional investigations are usually required.
Informal Conversion Arrangements
In some cases, conversions have been carried out without proper legal documentation.
This can create uncertainty regarding ownership, maintenance and access rights.
Will Indemnity Insurance Solve the Problem?
Indemnity insurance can sometimes assist where documentation is missing.
Policies are commonly available for:
- Missing Building Regulations approval.
- Missing planning permission.
- Lack of easements.
- Restrictive covenant breaches.
However, indemnity insurance is not always acceptable to lenders and does not remedy underlying physical defects.
Each case should be considered individually.
Are Converted Properties Harder to Sell?
Not necessarily.
Many converted properties are highly desirable and sell quickly.
However, unresolved legal issues can:
- Delay future transactions.
- Reduce buyer interest.
- Restrict mortgage availability.
- Reduce market value.
Ensuring that all legal issues are addressed during your purchase can help protect future saleability.
Frequently Asked Questions
Can I get a mortgage on a converted property?
Yes. Most lenders will consider converted properties, provided appropriate planning, Building Regulations and title documentation are available.
Do all converted properties require a PCC?
A PCC is usually relevant where a recent conversion does not benefit from an acceptable new build warranty. Only specialist lenders will offer a loan if there is no warranty or PCC, which means those loans are expensive and time consuming to arrange.
Will lenders accept indemnity insurance?
On a case by cases basis, lenders will accept indemnity insurance in certain circumstances, but acceptance varies depending on the lender and the nature of the defect.
Are converted flats riskier to buy?
Yes!
What happens if planning permission or Building Regulations approval is missing?
Additional enquiries will be required and, in some cases, indemnity insurance or retrospective approval may be necessary. Some lenders may refuse to proceed.
Speak to a Specialist Conveyancing Solicitor
Buying a converted property requires careful legal investigation. Missing documentation, defective leases and lender requirements can all affect your purchase.
Useful case law – which you won’t find quickly with AI!
Why the PCC Must Be Issued by an Insured Engineer or Architect Who Supervised the WorksThe requirement for supervision and professional indemnity (PI) insurance is not arbitrary — it is rooted in established principles of tort law concerning negligent misstatement and reliance. Lenders and purchasers need to know they can place reasonable reliance on the certificate if defects emerge, and that the certifier has the resources (via insurance) to meet any valid claim.This brings us to key authorities that shape how courts approach such certificates:
- Hedley Byrne & Co Ltd v Heller & Partners Ltd [1964] AC 465: This foundational House of Lords decision established that a duty of care can arise for pure economic loss caused by negligent statements where there is a “special relationship” involving an assumption of responsibility, known reliance, and reasonable foreseeability of harm. A professional issuing a PCC knows (or should know) that lenders and buyers will rely on it to advance funds or complete a purchase. Without supervision of the actual works and adequate insurance, that assumption of responsibility is weakened or absent. drs-als.com
- Caparo Industries plc v Dickman [1990] 2 AC 605: The House of Lords refined the test for duty of care into a tripartite framework: (1) foreseeability of harm, (2) proximity between the parties, and (3) it must be fair, just, and reasonable to impose a duty. In the context of certificates, proximity exists because the professional knows the certificate is being provided specifically for mortgage and purchase purposes. However, courts are cautious about expanding liability too widely. A certifier who did not supervise the works lacks the necessary proximity and competence to make reliable statements, making it unfair to impose liability. uniset.ca
- Hunt & Ors v Optima (Cambridge) Ltd & Ors [2014] EWCA Civ 714: This case is particularly instructive for PCCs and architects’ certificates. At first instance, the Technology and Construction Court found architects liable in negligent misstatement for certificates issued in respect of a development. However, the Court of Appeal overturned key aspects, emphasising the importance of actual reliance and the precise scope of the duty. The Court clarified that the duty is to take reasonable care in making the statements contained in the certificate, based on competent inspections and groundwork. Certificates provided after exchange of contracts could not found reliance in that instance, but the case underscores that professionals issuing such documents must have been properly involved in the design and monitoring process for their statements to carry weight