High-value & private bank mortgages:
A complete guide
As mortgage requirements become larger, the lending market begins to work differently.
A client borrowing £1 million against a £2 million home may have access to mainstream banks, building societies, specialist lenders and private banks. Increase the borrowing to £3 million, £5 million or £10 million and the available lenders, underwriting approach, pricing and expectations around the wider client relationship can change considerably.
Income also becomes only part of the picture.
High-value borrowers are often business owners, partners, senior executives, investors or internationally mobile families. Wealth may sit within businesses, investment portfolios, property, trusts or other structures rather than appearing as conventional monthly income.
The challenge is therefore not simply finding a lender prepared to advance a large mortgage.
It is deciding how the borrowing should be structured, which part of the lending market is most appropriate and which lender best understands the client's overall financial position.
What is a high-value mortgage?
There is no universal definition.
A mortgage of £1 million or more is commonly considered high-value lending, although individual lenders set their own thresholds.
Some building societies apply additional underwriting once borrowing reaches £500,000 or £750,000. Mainstream banks may have specialist teams dealing with larger loans, while private banks may have minimum mortgage sizes or broader wealth requirements before a relationship becomes appropriate.
Loan size matters because lenders do not necessarily maintain the same appetite at every level.
A lender comfortable providing a £1 million mortgage at a relatively high loan-to-value may become more conservative at £2 million, £5 million or above.
This means the market available to somebody borrowing £750,000 can look quite different from the market available to somebody borrowing £5 million, even where the clients themselves are equally strong.
Does a large mortgage require a private bank?
Not necessarily.
This is one of the most important distinctions in high-value lending.
Mainstream banks can have considerable appetite for large mortgages, particularly where income is straightforward and easily evidenced. Some building societies and specialist lenders can also provide substantial loans with flexible underwriting.
A private bank becomes more relevant when the client's circumstances, rather than simply the size of the mortgage, benefit from a more bespoke assessment.
This could include:
substantial assets but relatively modest conventional income;
business owners retaining profits within a company;
senior executives receiving bonuses, equity or carried interest;
significant investment portfolios;
international income or overseas wealth;
trusts or more complex ownership structures;
substantial interest-only requirements;
unusual or particularly high-value property;
future liquidity events; or
clients who want borrowing considered as part of a wider banking and investment relationship.
The best high-value mortgage is therefore not automatically a private bank mortgage.
Sometimes the simplest lender is also the best lender.
How affordability changes at higher loan sizes
Conventional mortgage affordability is heavily driven by income.
That remains important in high-value lending, but the way income is assessed can become more sophisticated.
A lender may need to consider:
salary;
bonuses and commission;
partnership income;
company profits and retained earnings;
dividends;
carried interest;
investment income;
vested shares or other equity remuneration;
pension income;
trust distributions;
foreign currency income; and
several different income sources together.
Some lenders remain highly formulaic regardless of the applicant's wealth. Others have specialist underwriting teams able to understand more complicated remuneration.
A small number may also be able to consider substantial assets when assessing the client's ability to support the mortgage.
This is why a client can receive dramatically different borrowing figures from lenders looking at exactly the same financial position.
Assets can matter (but they do not automatically replace income)
A common assumption is that somebody with several million pounds of investments should automatically be able to obtain a large mortgage.
It is not always that simple.
Most mortgage lenders still need to establish that borrowing is affordable. The existence of substantial assets does not necessarily allow conventional affordability requirements to be ignored.
However, certain lenders and private banks can take wealth into account more meaningfully.
Depending on the institution, this might involve:
recognising investment income;
considering a portfolio as part of an asset-based affordability calculation;
assessing the client's overall net worth and liquidity;
using investments as an interest-only repayment strategy;
taking additional security;
lending against an investment portfolio; or
combining mortgage borrowing with another form of secured lending.
The composition of the wealth matters too.
£3 million held in readily realisable investments is different from £3 million of equity tied up in a trading company or illiquid property.
Understanding what the assets are, where they are held, who owns them and how accessible they are is therefore important.
What private banks mean by a wider relationship
Private banking is rarely just about obtaining a mortgage with a more expensive-looking bank.
Many private banks are interested in the client's broader financial relationship.
That might include:
cash deposits;
investment portfolios;
discretionary investment management;
lending against investments;
foreign currency requirements;
business or corporate banking;
wealth planning; or
other banking services.
Some institutions expect a client to transfer a minimum level of assets under management, often referred to as AUM.
Others may offer mortgage lending without requiring significant assets to be transferred, particularly where the transaction itself is attractive to the bank.
The distinction matters.
A mortgage offering an attractive rate may be considerably less attractive if it requires the client to move a substantial investment portfolio they would otherwise prefer to leave elsewhere.
Equally, a client already looking for a new wealth-management or private-banking relationship may see considerable value in combining the two.
The mortgage should therefore be assessed alongside the cost, benefit and suitability of the wider relationship, not in isolation.
Interest-only borrowing
Interest-only can play a much greater role in high-value lending than many borrowers expect.
For clients with significant assets, the objective may not be to repay a large mortgage gradually from monthly income.
Instead, repayment might ultimately come from:
investment portfolios;
the sale of another property;
business assets;
a future business sale;
maturing investments;
pension assets where appropriate;
bonuses or deferred remuneration;
inheritance;
or another identifiable future liquidity event.
Some clients may also choose part repayment and part interest-only.
The important consideration is the credibility of the repayment strategy.
Different lenders have very different rules around acceptable assets, minimum equity, investment values, geographical location and how much of an asset's value they are prepared to recognise.
At this end of the market, interest-only is therefore often less about whether it is permitted and more about how the proposed repayment strategy fits the lender's policy.
Future liquidity events
High-value clients frequently have financial events on the horizon that do not fit neatly into conventional mortgage affordability.
An entrepreneur may expect to sell a business. A senior executive may have shares vesting over several years. A partner may anticipate future capital distributions. An investor may intend to dispose of a property or portfolio.
A lender cannot simply assume that a future event will happen.
However, some are considerably more comfortable than others in understanding a credible and well-evidenced liquidity strategy.
The timing, certainty and evidence behind the event all matter.
This can influence the mortgage term, whether borrowing is interest-only, how much liquidity the client wishes to retain and which lender is appropriate.
Should investments be used or left invested?
A high-value property purchase often creates a choice.
Should the client liquidate investments and put down a larger deposit, or retain those assets and borrow more?
There is no universal answer.
A larger deposit may reduce the mortgage, improve loan-to-value and potentially widen lender choice.
Retaining investments preserves liquidity and keeps capital invested, but increases borrowing and interest costs.
A private bank may introduce a third possibility by considering the investments as part of the wider relationship or, in some circumstances, using them to support the lending.
These are not purely mortgage decisions.
Where the choice affects investment strategy, taxation or wider financial planning, the client's wealth adviser, accountant or tax adviser should be involved.
The mortgage adviser can then structure the borrowing around that wider advice.
Loan-to-value becomes increasingly important
The relationship between loan size and loan-to-value is particularly important in the high-value market.
A lender's maximum LTV does not necessarily remain constant as borrowing increases.
For example, a bank might be comfortable with a relatively high LTV on a £1 million mortgage but require substantially more equity when the loan reaches several million pounds.
The property itself can also influence this.
Lenders may become more conservative where the property is particularly valuable, highly individual or difficult to sell because a smaller pool of buyers would be able to purchase it.
Private banks can sometimes provide greater flexibility where the client has significant assets or a wider relationship with the bank, but this should not be assumed.
The appropriate structure often involves balancing loan size, property value, available liquidity and lender appetite.
High-value and unusual property
Expensive properties are not always conventional properties with larger price tags.
High-value purchases can include:
substantial country houses;
listed buildings;
properties with extensive land;
estates containing several buildings;
unusual construction;
properties with equestrian facilities;
mixed residential and commercial elements;
highly individual architecture; or
homes in locations where comparable sales are limited.
Valuation becomes particularly important.
A property may be worth several million pounds but still be less attractive security to a lender if its market is narrow or the valuer believes it could take longer to sell.
Different banks also have different appetites for unusual property.
Selecting a lender comfortable with both the client and the security can therefore be just as important as demonstrating affordability.
11. Business owners and entrepreneurs
Business owners frequently illustrate why high-value mortgage underwriting needs flexibility.
A successful entrepreneur may deliberately take a relatively modest salary and dividend while retaining substantial profits within the business.
A conventional affordability model may therefore significantly understate their financial capacity.
Some lenders can assess salary plus dividends. Others can consider the applicant's share of company profits, and a smaller group may be able to look more broadly at retained earnings or the strength of the business.
The lender may consider:
ownership percentage;
profitability;
cash reserves;
retained earnings;
existing company debt;
working-capital requirements;
recent performance;
projections; and
the sustainability of future earnings.
Where a business sale or other capital event is expected, this may also form part of the wider discussion.
The strongest solution is not necessarily the lender offering the largest income multiple. It is the lender whose underwriting methodology most accurately reflects how the client's wealth is actually generated.
Senior executives and complex remuneration
Senior executives can face a similar problem.
Total remuneration may include salary, annual bonuses, deferred bonuses, restricted stock, vested shares, carried interest, allowances and other incentive arrangements.
Two lenders may recognise very different proportions of the same remuneration package.
The assessment may depend on:
how long an income source has been received;
whether it is guaranteed or discretionary;
vesting arrangements;
payment frequency;
previous awards;
future expectations;
employer strength; and
how readily the income can be evidenced.
For applicants with significant variable remuneration, understanding the lender's methodology before applying can materially affect the amount available.
International wealth and income
High-value clients are frequently international.
They may live overseas, earn in foreign currency, hold investments in several jurisdictions or own property and businesses outside the UK.
This introduces additional considerations around:
residence;
nationality;
foreign currency;
overseas employment;
international assets;
source of wealth;
source of funds;
tax residence;
sanctions and financial-crime checks; and
the location and accessibility of assets.
Some private banks are particularly well equipped for cross-border clients because international wealth forms a normal part of their business.
Others have relatively narrow geographical appetites despite operating in the private-banking market.
The term private bank therefore does not automatically mean internationally flexible.
Trusts, companies and complex structures
Wealth is not always owned personally.
Assets or income may sit within companies, partnerships, trusts, family investment structures or other entities.
Lenders need to understand both the legal ownership and the applicant's economic interest.
A trust distribution, for example, is different from personally owned investment income. Wealth held within a company is different from cash available to the shareholder personally.
Complexity does not necessarily prevent borrowing, but it can determine which lenders are capable of understanding the structure and what evidence they require.
Where trusts, corporate structures, tax planning or estate planning are involved, appropriate legal and tax advice should sit alongside the mortgage advice.
Source of wealth and source of funds
Private banks generally want to understand how a client's wealth was created, not simply see that it exists.
This can be particularly important when establishing a new banking relationship.
The bank may need information about:
business ownership or sale;
employment earnings;
investment growth;
property transactions;
inheritance;
trusts;
gifts; or
other significant sources of capital.
Source of funds is related but different. It establishes where the money being used for a particular transaction has come from.
Where wealth has accumulated over many years, moved between institutions or originated internationally, establishing a clear history early can prevent delays during onboarding.
Why the lowest mortgage rate may not be the best solution
Rate matters, but high-value lending involves more than comparing headline pricing.
A lender offering a slightly lower rate may:
require greater investment assets to be transferred;
offer less flexibility around repayment;
restrict interest-only;
require a larger deposit;
take longer to approve the transaction;
have less appetite for the property; or
assess income in a way that does not support the required borrowing.
Another lender may offer a slightly higher mortgage rate but provide a structure that better fits the client's wider circumstances.
This does not mean price becomes unimportant.
It means price should be compared within the context of the overall structure.
Presenting a high-value application
Large and complex mortgage applications can involve substantial amounts of financial information.
An underwriter may need to understand income, businesses, investments, property portfolios, liabilities, trusts, international assets and future financial events.
Simply submitting all of that information is not the same as presenting it effectively.
A strong application should make clear:
what the client wants to achieve;
how their income and wealth are structured;
where the deposit originates;
why the proposed borrowing is appropriate;
how interest-only borrowing will ultimately be repaid;
what assets and liabilities exist elsewhere; and
any important future events the lender should understand.
For private banks, this can also involve explaining why a broader banking relationship might make sense.
The objective is to give the lender a coherent financial picture rather than expecting an underwriter or banker to assemble one from dozens of disconnected documents.
Relationships and access to decision-makers
High-value lending is an area where access to the right people can make a meaningful difference.
Many private banks, building societies and specialist high-value lending teams are willing to discuss complex cases before an application is submitted.
That conversation can establish whether the lender has genuine appetite for the transaction, identify potential concerns and determine what information will be required.
It can also reveal flexibility that is difficult to identify from published lending criteria alone.
This does not mean relationships can make an unacceptable mortgage acceptable.
They can, however, ensure that unusual circumstances are considered by the appropriate people and properly understood before a formal application is made.
Structuring the mortgage around the wider financial position
For high-value clients, the question is often not simply:
How much can I borrow against this property?
It may instead be:
Where should I borrow, how much should I borrow and how should that borrowing fit alongside everything else I own?
A client with several properties may have choices about where debt is placed.
Someone with substantial investments may have choices about whether to use capital or retain it.
An entrepreneur expecting a future liquidity event may prefer a different mortgage structure from somebody intending to retain the borrowing for twenty years.
Interest-only, part-and-part, mortgage term, product period, loan-to-value and the use of other assets can all form part of that discussion.
The mortgage should therefore be viewed as one component of the client's financial position rather than an isolated transaction.
Where those decisions interact with investments, taxation, business interests, trusts or estate planning, Pavilion works alongside the client's appropriate professional advisers rather than replacing them.
Choosing the right part of the market
High-value lending is not one market.
Depending on the circumstances, the appropriate solution might come from:
A mainstream bank
Often highly competitive for clients with substantial but straightforward income and conventional property.
A building society
Potentially useful where individual underwriting or greater flexibility is required.
A specialist lender
Relevant where income, property, ownership or other circumstances sit outside mainstream criteria.
A private bank
Potentially appropriate where substantial assets, complex income, international wealth, interest-only borrowing or a wider banking relationship justify a more holistic approach.
There is significant overlap between these categories.
The objective should not be to obtain a private bank mortgage simply because the borrowing is large.
It should be to identify the lender and structure that best fit the client's circumstances.
Final thoughts
High-value mortgage lending is not simply conventional mortgage lending with bigger numbers.
As borrowing increases and financial circumstances become more sophisticated, structure, underwriting approach and lender appetite become increasingly important.
A £1 million mortgage for an employed applicant with a large salary may be perfectly suited to a mainstream bank.
Another client seeking exactly the same mortgage could require a completely different solution because their wealth sits within a business, their remuneration includes equity, their assets are held internationally or they want to borrow predominantly on an interest-only basis.
At still larger loan sizes, the available market can change again.
Private banks add another dimension because they may consider the mortgage alongside investments, liquidity, wider wealth and the potential for a broader banking relationship. But they are not automatically the right answer for every wealthy client or every large mortgage.
The starting point should therefore be the client rather than the lender:
What are you trying to achieve? How is your income generated? Where is your wealth held? How much liquidity do you want to retain? How will the borrowing ultimately be repaid? And how does the mortgage fit into your wider financial position?
Once those questions are understood, the task becomes much clearer: structure the borrowing appropriately, identify the lenders with genuine appetite and present the complete financial picture to the people capable of making the decision.
Frequently asked questions.
Every client and every mortgage is different, but there are some questions we are asked regularly.
From affordability and deposits to complex income, expat mortgages and specialist property finance, our FAQs explain how different lenders may approach different circumstances.
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