A loft conversion can turn unused attic space into a bedroom, home office, or ensuite. When well designed, it can improve day‑to‑day comfort and sometimes add to resale value, though property prices may fall as well as rise.
The cost, however, is often significant. Some homeowners spread those costs over time through credit products commonly referred to as “loft conversion on finance”.
A loan for a loft conversion is a form of borrowing used to meet expenses such as:
Using credit means repaying the amount borrowed plus interest and charges. Total cost will therefore exceed the cash price of the work.
A detailed survey and careful planning can help you manage:
Current UK industry estimates (2024) suggest:
| Type of conversion | Typical cost range* |
| Basic roof‑light / Velux® | £15,000 – £30,000 |
| Dormer | £35,000 – £50,000 |
| Hip‑to‑gable | £45,000 – £65,000 |
| Mansard | £60,000 – £80,000+ |
*Figures vary by region, specification, and labour rates. Obtain itemised quotes before committing to any project.
Below are the credit types most often mentioned by UK homeowners who look for loans for loft conversion. Details, costs, and eligibility will differ by lender.
These unsecured loans have fixed repayments, are usually over one to seven years, and suited to smaller budgets. They may have a higher interest than secured credit.
For larger sums and lower headline rates, some choose secured loans or second-charge mortgages. Because the loan is secured against your home, your home could be repossessed if you do not keep up repayments. Also, early-repayment charges may apply.
The advantages of using credit include being able to spread the cost over time and keeping your saved emergency funds available for other priorities. Also, a successful conversion can enhance living space and, in favourable markets, resale value.
Drawbacks include interest and fees. Those monthly repayments will reduce future disposable income. Finally, taking on additional debt may affect future borrowing ability.
Many use a combination of savings and credit (e.g., a personal loan for loft conversion or secured borrowing), depending on project size and household budget.
Basic roof‑light projects may start at about £15,000. Complex builds with dormers, bathrooms, or full roof alterations can exceed £60,000.
Eligibility depends on lender criteria such as income, credit history, loan amount, and (for secured credit) available home equity. All applications are subject to status.
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