A senior professional who already owned the freehold of a Victorian building wanted to purchase the leasehold flat below her own home before it was sold to another buyer. The immediate priority was to secure the acquisition, while the longer-term plan was to merge the two flats and restore the property as a single five-bedroom house. Because the existing mortgage was secured against the upper flat alone, the transaction required a full refinance and a new capital repayment mortgage over both properties. Working closely with the client, Steve Verrell structured a solution that balanced speed, affordability, future flexibility and protection for her husband and three young children.

For borrowers searching for a mortgage to buy the flat below their home, finance to acquire an adjoining property or funding before merging two titles, this type of scenario requires far more careful planning than a conventional residential purchase.

A Rare Opportunity That Could Not Be Deferred

The client lived in the upper flat of a converted Victorian terrace and owned the freehold of the entire building. The garden flat below was owned separately by a leaseholder who wanted to sell quickly.

Buying the lower flat presented a unique opportunity. Once both units were under common control, the client intended to reconvert the building into a single family home. The completed property would provide significantly more space for the household and its three young children while restoring the building closer to its original configuration.

However, the intended title merger and physical conversion were not immediate priorities. The client expected to undertake that work after two years or more. The immediate challenge was simply to complete the purchase before the flat was sold elsewhere.

She had available in cash savings towards the acquisition, leaving a purchase mortgage requirement. In isolation, that appeared relatively straightforward.

The complexity arose because the existing mortgage on the upper flat had an outstanding balance. The current lender held security over one part of the building, while the incoming lender would need a satisfactory legal charge over the combined arrangement.

The practical solution was therefore not a separate mortgage against the lower flat. It was a full refinance of the existing home together with the additional borrowing needed for the purchase.

Why a Standard Purchase Mortgage Was Unsuitable

Traditional lenders often struggle when a borrower owns the freehold of a converted building, occupies one unit and seeks to acquire the leasehold interest in the adjoining flat.

The legal and valuation position differs from an ordinary house purchase. The lender must understand the relationship between the freehold and leasehold titles, the existing mortgage security and the borrower's intention eventually to merge or reconfigure the property.

Some lenders would only consider the lower flat as a standalone property. That approach would have left the existing mortgage in place and introduced competing security interests across the same building.

Others might have been uncomfortable with the longer-term plan to combine the units, particularly if their lending policy prohibited material alterations, title mergers or changes to the nature of the security during the fixed-rate period.

The client's existing mortgage also carried a likely early repayment charge of around 1% if redeemed before the end of 2026. Retaining it would have avoided that cost, but doing so could have prevented the incoming lender from obtaining the security it required.

This created a clear trade-off. The client could preserve the existing mortgage and risk losing the acquisition, or accept the early repayment charge and implement a structure capable of funding both properties coherently.

Given the rarity of the opportunity and the client's long-term family objective, the latter was the more appropriate route.

Structuring the Refinance Around Both Properties

Working closely with the client, Steve Verrell identified a lender prepared to refinance the existing borrowing and provide the additional funds required for the purchase.

The resulting facility incorporated the outstanding mortgage balance together with the acquisition borrowing.

The mortgage was arranged on a capital repayment basis over 27 years. That term allowed the loan to end before the client's intended retirement age of 70 while keeping the monthly payment within the household's available surplus.

The client had a strong employed income profile, including a substantial basic salary and annual bonus. Her husband's self-employed income was deliberately excluded from the assessment, creating a more conservative application based solely on income that could be evidenced and relied upon.

This was an important underwriting strength. Although the overall loan was substantial, it did not depend on secondary earnings, projected future income or the anticipated increase in value after the two flats were combined.

Specialist assessment in a case like this is not simply about maximum affordability. It is about presenting a credible structure that works before, during and after completion.

Why a Two-Year Fixed Rate Was Chosen

The client preferred a two-year fixed rate because she planned to review the ownership and physical configuration of the property once the initial purchase had settled.

A longer fixed period might have offered greater payment certainty, but it could also have introduced larger early repayment charges or restrictions if she later needed to refinance when merging the titles.

The two-year product therefore created a natural review point.

By that stage, the client could assess whether to proceed with the title merger, planning requirements, building works and any revised valuation of the property as a single dwelling.

The selected mortgage also allowed annual overpayments of up to 10% of the outstanding balance, giving the client additional control if future bonuses or surplus income were used to reduce the debt.

There was still a trade-off. A shorter fixed period exposed the client to refinancing risk sooner, particularly on a large balance. However, flexibility was strategically more important because the property itself was expected to change.

The final structure was therefore not chosen simply because it offered the lowest immediate rate. It was selected because it aligned the mortgage with the anticipated property strategy.

Assessing Affordability Beyond the Headline Loan

The new monthly mortgage repayment represented a material increase from the existing monthly payment, but the client had strong disposable income after household expenditure. Her combined monthly spending against net earnings was modest, leaving a substantial monthly surplus before the new mortgage.

The assessment also considered credit card debt. While this was small relative to income, it remained relevant because unsecured balances can reduce affordability and should not be ignored in a large residential application.

Traditional lenders often assess affordability through automated models that may not fully capture the strategic nature of a transaction. In this case, the lender needed to consider both the client's ability to sustain the payment and the rationale for consolidating the security across two adjoining units.

The client's senior employment position, long service history, strong earnings and low dependence on her husband's income all strengthened the application.

Protecting the Debt and the Family

The mortgage recommendation was only part of the overall solution.

The client had employer-provided income protection and Death in Service cover. Her sick pay arrangements were strong, with full pay for an initial period followed by a substantial proportion of salary under the employer's group policy.

However, workplace benefits are not a complete substitute for personally owned protection.

Death in Service cover is linked to employment. It can end if the client changes employer, is made redundant or retires. The employer can also amend the scheme, and the benefit is normally calculated as a multiple of salary rather than being specifically aligned with the mortgage balance.

The client therefore faced a significant protection need. She had three young children, a husband who carried out much of the childcare and a new, larger, proposed mortgage.

Steve recommended decreasing term life cover for the full mortgage amount over 27 years. The benefit would reduce broadly in line with the repayment mortgage and provide a lump sum in the event of death or terminal illness.

This structure was more cost-effective than level term cover because the insured amount reduced over time as the mortgage balance was expected to fall.

The policy also included waiver of premium, helping maintain the cover if the client became unable to work for a qualifying period.

Steve strongly recommended that the client's husband consider matching cover. Although his income was not used for mortgage affordability, his contribution to childcare had substantial economic value. If he died, the family could face significant replacement childcare costs even if the mortgage itself remained affordable.

This is a crucial point in family protection planning. Financial dependency is not limited to salary. Unpaid childcare and household support can be equally important to the family's long-term stability.

Preserving Flexibility for the Future Conversion

The immediate mortgage solved the acquisition problem, but the longer-term strategy required legal and property planning beyond the initial finance.

The client intended eventually to merge the two flats, combine the titles and restore the building as one residence. That process could involve lender consent, legal work, planning or building regulation requirements and a fresh valuation.

The structure therefore needed to avoid forcing those changes prematurely.

By first securing ownership of both units and delaying the merger, the client preserved control over the timing of the project. She could undertake further due diligence, obtain professional advice and assess the cost of the works without risking the loss of the lower flat.

This sequencing was central to the solution.

Attempting to complete the purchase, merge the titles and fund the works simultaneously could have created unnecessary legal and underwriting complexity. Acquiring first and restructuring later provided a cleaner route.

The case shares features with other complex residential finance scenarios, including buying adjoining properties, refinancing converted buildings and structuring borrowing ahead of major renovation. It also highlights the importance of coordinating mortgage advice with conveyancing, planning and estate planning.

Key Takeaways

What made this transaction possible was the decision to treat the two flats and the existing borrowing as one integrated financing problem.

A standalone purchase mortgage would not have addressed the existing lender's security or the borrower's longer-term intention to combine the properties. The full refinance allowed one lender to take a coherent charge while providing the additional funds needed for the acquisition.

The lender assessed the case based on sustainable employed income, the current property configuration and the client's ability to maintain the new repayment mortgage. It did not rely on the husband's self-employed income or any assumed future uplift after conversion.

Similar clients should understand that buying an adjoining flat is rarely equivalent to a normal residential purchase. Existing title arrangements, freehold ownership, lender consent, early repayment charges and future building plans can all affect the mortgage strategy.

Specialist advice adds value by sequencing the transaction correctly: securing the opportunity first, preserving flexibility during the fixed period and planning the title merger and conversion as a separate future stage.