Buying a home worth several million pounds is rarely held up by whether you can afford it — it is usually held up by whether a high-street lender can read your finances. If your wealth sits in a business, a share portfolio, a trust, or income earned across more than one country, the standard salary-times-four calculation simply doesn’t describe you. That mismatch is why so many high-net-worth buyers are declined on paper for properties they could comfortably buy in cash.
A high-value mortgage exists to close that gap. Rather than fixating on a payslip, the right lender looks at your whole financial picture and lends against it. At London FS this is most of what we do, day in and day out — arranging large, discreet mortgages for people whose finances are anything but standard.
What actually counts as a high-value mortgage?
In practice, a high-value mortgage means borrowing above around £1 million, though the more useful distinction is how it is underwritten. These loans are assessed on total wealth — business interests, investments, property already held, and overseas income — not on annual salary alone.
Because of that, the terms tend to be more flexible than an off-the-shelf product. Depending on the lender and your circumstances, that can mean:
- Rates priced to the individual relationship rather than a rate card
- Interest-only or bespoke repayment structures, sometimes linked to a liquidity event
- Income assessed on dividends, retained profit, or foreign earnings
- Arrangements that account for assets held in a company or trust
Who tends to need one
There is no single profile, but the clients we help most often share one thing: their income doesn’t fit a tidy box. A few examples from the work we do:
- Business owners taking a modest salary but sitting on substantial retained profit
- Investors whose wealth is spread across equities, property and private holdings
- Senior executives paid largely in bonus, carried interest or share options
- International buyers earning abroad but buying in London
If any of that sounds familiar, a specialist lender will usually take a far more considered view of affordability than a mainstream bank ever could.
Why they work in your favour
- Built around your wealth. The structure reflects how you actually earn and hold money, not a generic template.
- Higher borrowing. Loan-to-value of 85% or more is achievable in the right case.
- Flexible repayment. Interest-only and tailored schedules are common at this level.
- Genuine discretion. Private banks manage these relationships quietly and personally.
- More than a loan. Many lenders bring wealth planning and banking benefits alongside the mortgage.
How to give yourself the best chance
Securing one of these deals is less about jumping through hoops and more about presenting your finances clearly to the right lender. In our experience it comes down to five things:
- Know your own numbers. Map out income, assets and liabilities before you apply — lenders judge net worth, not just earnings.
- Use a broker who lives in this market. The lenders that write these loans rarely advertise; access is through relationships.
- Get the paperwork right early. Audited accounts, asset schedules and investment statements do far more than a payslip ever would.
- Match the product to the goal. A main residence, an investment purchase and a refinance each call for a different structure.
- Negotiate from strength. A well-packaged case, put to a lender who already trusts your broker, is what moves the rate.
The sticking points — and how they get solved
Even with substantial wealth, a few things routinely trip people up:
- Lumpy income. Profits and dividends swing year to year, which unsettles automated underwriting.
- Layered finances. Several income streams across jurisdictions take real documentation to explain.
- Cross-border money. Offshore income and overseas assets complicate a standard assessment.
- Sheer value. The property itself can sit outside a mainstream lender’s limits.
None of these are dealbreakers with the right lender — they are simply reasons to go to one who does this every week rather than once in a while.
Buying from abroad
Many of the people we help live or work overseas while keeping a foot in the UK property market. Lenders who understand foreign income can structure a loan around earnings and assets held abroad, and we handle the parts that tend to cause friction — UK regulation, currency, and keeping the process tax-efficient — so it stays straightforward at your end.
Where London FS fits in
London FS arranges high-value mortgages for exactly these situations. We work with private banks and specialist lenders who price on relationships, and we stay involved from the first conversation through to completion — so the terms fit your wider financial plans rather than cutting across them.
In short
A high-value mortgage isn’t about clearing a higher bar — it’s about being read correctly. Complex wealth rarely suits a mainstream lender’s model, but the right specialist product gives you flexibility, discretion and real borrowing power. Get your finances in order, work with a broker who knows the lenders, and buying or refinancing a significant home becomes a good deal simpler.
To talk it through, call London FS on +44 (0)20 8427 5057 or email enquiries@london-fs.com.
