Edmond de Rothschild has formally opened its new Monaco headquarters in La Condamine, bringing 270 employees of its Monegasque private bank into a 5,300-square-metre building. The more significant detail for internationally mobile property owners is the list of services the bank has chosen to place together: relationship banking, discretionary investment management, investment advice, real-estate financing, wealth planning and life-insurance brokerage.
The announcement, made on 7 September, marks 40 years since Edmond de Rothschild established its Monaco presence. The new building has been designed to bring the private bank's different areas of expertise closer together rather than treat them as separate client relationships.
That organisational decision reflects a wider principle in high-net-worth finance. For a wealthy family with substantial investments, businesses and property across jurisdictions, a £2m or £3m mortgage is not necessarily an isolated retail product. It can be one of the largest liabilities on the family balance sheet and can interact directly with liquidity, investment allocation and residence planning.
The question for borrowers is therefore becoming less about whether a private bank can provide a mortgage and more about whether the debt structure offered as part of the wider banking relationship is the right structure for that particular client.
What Edmond de Rothschild Has Opened in Monaco
Edmond de Rothschild formally unveiled its new 5,300-square-metre headquarters in La Condamine on 7 September 2026, bringing all 270 employees of its Monaco private bank together.
The bank says the new location unites its Monaco private-banking expertise across relationship banking, discretionary management, advisory, real-estate financing, wealth planning and life-insurance brokerage.
The wider Edmond de Rothschild Group reported more than CHF198bn of assets under management at 31 December 2025 and operates across 35 global locations.
The Important Development Is Not the New Building
Private banks opening or refurbishing offices in major wealth centres is not, by itself, especially significant for UK property borrowers. The more revealing part of the Edmond de Rothschild announcement is how explicitly property finance sits inside the bank's wider private-client proposition.
Real-estate financing is listed alongside discretionary management and wealth planning, not as an unrelated mortgage service. That matters because it reflects how sophisticated banks often approach wealthy clients: the bank wants to understand the complete balance sheet, not simply the salary entering a current account.
For some borrowers this can be highly beneficial. A private bank may be able to take account of investment assets, business interests, concentrated wealth, future liquidity events or income patterns that a conventional mortgage affordability model handles poorly.
The resulting mortgage can therefore be structured around the client's wider financial position rather than a standard income multiple.
Consider the Monaco Resident With a £5m London Home
The relevance becomes clearer with a typical cross-border scenario.
Imagine a British entrepreneur who has moved to Monaco but retained a £5m London home. The property carries a £2m interest-only mortgage approaching maturity. The client also has £15m of managed investments, business interests in another jurisdiction and family members who continue to spend significant time in the UK.
Their financing requirement cannot be understood solely from the outstanding mortgage balance.
The client's country of residence has changed. Their income may now arise in different currencies or through different entities. Their investment assets may sit with a Monaco, Swiss or UK private bank. Their long-term intention for the London property might have changed. They may also want to retain liquidity rather than repay a substantial proportion of the mortgage from investments.
A private bank offering wealth management and real-estate financing together can reasonably consider all of those elements as one relationship.
The Mortgage Is a Liability on the Same Balance Sheet as the Investments
A client with a £15m investment portfolio and a £2m London mortgage does not really have two unrelated financial questions.
Decisions about investment liquidity, mortgage leverage, interest-only repayment, residence and future property plans can affect one another. The relevant issue is whether the combined structure works for the client.
Integrated Private Banking Can Be an Excellent Solution
There is no inherent problem with placing property debt with the same institution that manages a client's investments. In many cases, that integration is one of the principal benefits of private banking.
The bank already understands the family, assets and source of wealth. It may be willing to assess the mortgage using a wider picture than a conventional lender would consider. Borrowing and investment liquidity can potentially be coordinated, while the client benefits from dealing with a smaller number of institutions.
Private-bank credit teams may also be able to structure large interest-only facilities or consider complex international income where mainstream lenders would find the case difficult to fit into policy.
For a client who values the overall banking relationship and receives competitive lending terms, keeping the property finance inside that relationship can therefore be entirely rational.
But Integrated Banking Does Not Remove the Need to Compare the Debt
The fact that a bank manages a client's investments does not automatically mean it must also provide every property loan.
That distinction becomes important when lending is linked to the broader relationship. Depending on the bank and facility, a borrower may be asked to maintain assets with the institution, retain particular levels of liquidity, pledge investments or satisfy other relationship requirements.
Those conditions can be worthwhile if the overall proposition is attractive. But the correct benchmark is not simply the mortgage rate shown on the term sheet.
The client needs to understand what they are giving the bank in return for the facility and how the structure compares with other available sources of debt.
What Should Be Benchmarked?
The Wider Lender Market May Produce a Different Answer
A Monaco resident with a large UK property loan does not necessarily have to choose between accepting their incumbent private bank's proposal and repaying the debt.
Depending on the facts, the comparison might include another private bank, a UK large-loan lender, specialist expat finance or a lender comfortable with complex international income.
Some borrowers with substantial investments may also consider securities-backed or Lombard lending for part of the required liquidity. In other cases, keeping long-term property debt secured against the property rather than the investment portfolio may provide a cleaner risk structure.
The lender universe depends heavily on the borrower. A British national resident in Monaco with established UK assets can present differently from a foreign national acquiring their first UK property, while a salaried executive will be assessed differently from an entrepreneur whose wealth comes predominantly from company equity and investments.
The value of the comparison is therefore not simply that more lenders may be available. It is that different lenders may assess the same balance sheet in materially different ways.
A Private Bank and a Large-Loan Mortgage Lender Can Solve the Same Case Differently
Consider a £3m mortgage against a £6m London property. The client has £12m of liquid investments and irregular annual income because most of their wealth has been created through business interests rather than salary.
One private bank may be prepared to lend based on the wider wealth relationship, potentially expecting investment assets to form part of that relationship. Another bank might offer credit against externally managed assets. A specialist large-loan lender may instead assess the case primarily against property, income and repayment strategy without requiring the client to move the same level of investments.
None of those routes is automatically superior.
The correct choice depends on the amount and duration of borrowing, investment strategy, desire to retain existing wealth managers, future liquidity expectations and the commercial value of the wider private-bank relationship.
| Potential Route | What the Client May Need to Consider |
|---|---|
| Incumbent private bank | Convenience, existing relationship, integrated wealth planning, pricing and any asset or liquidity requirements. |
| Alternative private bank | Whether better credit terms justify establishing another banking relationship or transferring assets. |
| UK large-loan lender | Potential to separate the mortgage from investment management, subject to income, residency and lender criteria. |
| Specialist expat lender | Useful where non-UK residence or foreign income is the primary complexity rather than the client's wealth structure. |
| Lombard or securities-backed facility | Can preserve property leverage or provide liquidity but introduces investment-collateral and potential margin-call risk. |
| Blended structure | A combination of property and portfolio-backed borrowing may be appropriate in some circumstances, subject to overall risk and repayment strategy. |
Why Independent Debt Benchmarking Matters
High-net-worth clients frequently subject the asset side of their balance sheet to considerable scrutiny. Investment managers are compared, asset allocation is reviewed, costs are monitored and performance is measured against appropriate benchmarks.
Large personal liabilities can receive considerably less attention.
A £3m mortgage can sit unchanged for years because it forms part of an established private-bank relationship. That may remain entirely appropriate, but the size of the liability means even modest differences in rate, fees or structure can become meaningful in cash terms.
The borrower may also discover that a lending decision made several years earlier no longer reflects the wider market. Their residence may have changed, assets may have increased, property values may be different and the range of specialist lenders willing to consider large international cases may have broadened.
Benchmarking the debt does not require the client to leave their private bank. It simply tests whether the existing structure remains competitive and suitable.
This Is Particularly Relevant Where the Bank Also Manages the Investments
A client can have a strong and valuable relationship with a private bank while still wanting independent advice on a substantial borrowing decision.
The interests are not necessarily in conflict. The private bank wants to provide a suitable lending and wealth proposition within its own model. The independent finance adviser can compare that proposal with structures available elsewhere.
That can give the client a clearer answer to an important question: is the private-bank mortgage genuinely the best route, or simply the most convenient route because the assets are already there?
In some cases, the comparison may validate the private bank's terms. That is still useful. The client knows that consolidating investments and debt within the relationship is commercially competitive rather than merely habitual.
The Cost of Moving Investments Belongs in the Comparison
Where a proposed loan requires a client to establish or enlarge an investment relationship, the consequences need to be considered beyond the mortgage itself.
Changing wealth manager can create investment-management charges, transaction costs, portfolio restructuring, tax considerations and loss of an established advisory relationship. Those issues fall within the appropriate investment and tax advisers' remit, but they are part of the client's overall decision.
A slightly cheaper mortgage is not necessarily better if obtaining it requires a major investment restructuring the client would not otherwise want.
Conversely, a client already seeking a new wealth-management relationship may find that integrating lending and investments with a private bank creates genuine efficiencies.
The debt therefore needs to be assessed in the context of what happens to the assets around it.
Monaco Residence Can Change the UK Mortgage Market
The announcement is particularly relevant to UK property owners who have moved, or are considering moving, to Monaco.
A mortgage originally arranged while the borrower was UK resident may not necessarily be structured in the same way if the client later becomes internationally resident. Lender criteria can change according to residence, currency of income, property use and the borrower's wider profile.
That does not mean the existing mortgage automatically becomes unsuitable or invalid when the client moves. The precise position depends on the lender, facility and intended use of the property.
It does mean a planned change of residence can be a natural trigger for reviewing the debt before the move takes place.
Why Review the Mortgage Before Moving?
After relocation, the borrower may be assessed as an expat or non-UK resident by prospective lenders.
Their income currency, employment arrangement, tax residence and banking relationships may also change.
Reviewing the UK property debt in advance can therefore establish whether refinancing before or after the relocation produces the stronger lender universe.
The Same Principle Applies When a Monaco Resident Buys in Britain
The cross-border issue does not only affect people leaving the UK. Monaco residents purchasing British property can face the same need to coordinate debt and wealth.
A Monaco-based buyer acquiring a £5m London home may hold the majority of their wealth with European or Swiss private banks, earn income outside Britain and have little need for a conventional UK banking relationship.
They could potentially use a private bank comfortable with the entire international profile. Depending on the case, specialist UK lenders may also be able to provide a mortgage without requiring the same wider wealth relationship.
The right structure depends on the client's circumstances, source of wealth, nationality, residence, property and desired leverage. There is no rule that a Monaco resident buying in Britain must use a private bank, just as there is no rule that a mainstream mortgage will always be available.
Lombard Lending Creates Another Comparison
For clients with large investment portfolios, property purchases and refinancing decisions can also involve securities-backed borrowing.
A Lombard facility can allow a client to borrow against an eligible investment portfolio without selling the underlying assets. That can be useful where liquidity is required quickly or where the client expects a relatively short borrowing period.
It is not equivalent to a mortgage. The collateral value of the investment portfolio can change and lenders can require additional collateral or repayment if asset values fall sufficiently. Portfolio concentration and asset eligibility can also affect borrowing capacity.
A client choosing between a £2m property mortgage and £2m of portfolio-backed borrowing is therefore comparing different types of leverage, not simply two interest rates.
The mortgage places the primary security risk against the property. Lombard lending places that risk against investment assets. The most appropriate route depends partly on which assets the client is prepared to encumber and for how long.
Property Debt Can Affect Investment Decisions
The relationship also works in the opposite direction. A mortgage structure can influence how the investment portfolio is managed.
If a client pays down a £3m mortgage by selling investments, their property leverage falls but so does the amount of liquid capital available for investment. If they retain the mortgage, they keep more assets invested but accept the cost and risk of additional debt.
Where a private bank manages both sides of the equation, it can model that trade-off within one relationship. Where the debt and investments sit with different institutions, the client and their advisers need to coordinate the decisions themselves.
Neither model is inherently superior. The critical issue is ensuring the debt is not considered without reference to what the client is trying to achieve with the assets.
Interest-Only Borrowing Can Make the Wealth Link Even Stronger
Large private-bank mortgages are frequently considered on an interest-only basis where the borrower has a credible repayment strategy. At HNW level that strategy may involve investment portfolios, property sales, business proceeds or another substantial future liquidity event.
That means the bank's assessment of the debt can depend directly on assets that are not themselves the mortgaged property.
For a client planning to sell a business in five years, for example, the preferred mortgage structure could look very different from the structure appropriate to a borrower who expects the debt to remain for 20 years.
The value of a private-bank relationship is partly its ability to understand those wider circumstances. The value of independent benchmarking is that the client can establish whether another lender would interpret the same circumstances more favourably or with fewer relationship conditions.
What Should an International HNW Debt Review Cover?
For a Monaco-connected borrower with substantial UK property debt, the first question should not necessarily be which lender is cheapest. The review should establish how the property borrowing fits within the wider financial position.
| Area to Review | Why It Matters |
|---|---|
| UK property value and mortgage balance | Establishes current leverage and the amount of debt actually requiring refinance. |
| Country of residence | Can materially affect which mainstream, specialist and private-bank lenders will consider the case. |
| Income and currency | Foreign income may be assessed differently between lenders and can create exchange-rate exposure against GBP debt. |
| Investment portfolio | Can support a private-bank proposition, repayment strategy or potential securities-backed borrowing option. |
| Current wealth manager | Important where a proposed lending solution requires investment assets to move or remain with a particular institution. |
| Future liquidity events | Business sales, investment maturities or property disposals can influence term, interest-only structure and repayment flexibility. |
| Property plans | The appropriate debt can differ depending on whether the UK property will be retained, sold, rented or used as a second home. |
| Relationship requirements | The economic comparison should include any AUM, liquidity, collateral or wider banking conditions attached to the loan. |
Private Banking Is Increasingly About the Whole Household Balance Sheet
Edmond de Rothschild's new Monaco operation is a particularly visible example because it has explicitly grouped real-estate financing with wealth planning and investment management in the description of its private-banking expertise.
That does not establish that every Edmond de Rothschild mortgage requires an investment mandate, nor does the announcement disclose the lending terms available to individual clients.
What it does demonstrate is how one major international private bank conceptualises the client relationship. Property financing sits within the same private-banking ecosystem as investment advice and wealth planning.
That is a useful signal for any wealthy family carrying material property debt, irrespective of which private bank they use.
Private Banks Are Not the Only Institutions Capable of £2m–£5m Mortgages
A common assumption among HNW clients is that a sufficiently large mortgage automatically requires private banking. That is increasingly too simplistic.
Some mainstream and specialist UK lenders can provide seven-figure mortgages where borrower income and the property fit their criteria. Those lenders may not require the same wider investment relationship as a private bank.
For a straightforward £2m borrower with strong conventional income, that can create a genuinely different alternative to relationship-led lending.
At the other extreme, an internationally resident entrepreneur with irregular income, complex asset ownership and an £8m requirement may still fit a private-bank approach much more naturally.
The appropriate dividing line is therefore not simply loan size. It is how the client's income, assets, residence and objectives interact with the lender's underwriting model.
The Bank's Convenience Has a Value Too
Independent comparison should not ignore the practical value of simplicity.
A client with banking, investments and credit already established at one institution can often benefit from existing KYC, relationship knowledge and a private banker familiar with the wider family position. Maintaining one relationship can also reduce administrative complexity.
That convenience has genuine value, particularly for internationally mobile families coordinating advisers across several countries.
But convenience should be recognised as one component of the decision rather than confused with proof that the lending terms are the strongest available.
The client's objective is not necessarily to minimise the mortgage rate at any cost. It is to find the debt structure that produces the best overall result once cost, liquidity, flexibility, investment arrangements and relationship value are considered together.
The Best Result May Still Be the Existing Private Bank
Independent benchmarking is not an argument for moving the debt away from the incumbent bank.
If the existing bank offers appropriate leverage, competitive terms and relationship conditions that suit the client, the comparison may simply confirm that keeping the mortgage and investments together is the right outcome.
This Creates a Different Role for Wealth Managers and Family Offices
The same issue is relevant to advisers who do not themselves provide property finance.
An independent wealth manager may advise on a £10m portfolio while the client's £3m property mortgage sits with a bank largely outside that investment-planning discussion. A family office may coordinate tax, legal and investment advisers while treating property borrowing as something the client arranges separately.
As private banks integrate lending more closely into the wealth relationship, advisers need visibility over the liability side as well as the asset side.
That does not require the wealth adviser to become a mortgage adviser. It means recognising when a substantial property liability should be independently reviewed as part of the wider balance sheet.
Monaco Advisers Are Particularly Well Placed to Identify the Trigger
Private-client lawyers, tax advisers, independent asset managers and family offices often know that a client is moving to Monaco months before a mortgage adviser would ordinarily encounter the case.
They may also know when a London property is being retained, when a family intends to acquire another UK residence or when an existing private-bank relationship is being reconsidered.
That makes the professional trigger unusually clear: a major residence or wealth-structure change should prompt a review of material UK property debt.
The advisers remain responsible for residence, tax, investment and legal conclusions. The finance review establishes how the existing or proposed UK debt fits once those professional decisions are understood.
How Willow Private Finance Can Help
Willow Private Finance works with HNW and internationally resident clients whose UK property borrowing needs to be considered alongside substantial assets, complex income and existing private-bank relationships.
Our role is not to replace the client's wealth manager, private banker, tax adviser or family office. It is to provide an independent view of the property debt.
For a Monaco-resident client retaining or purchasing UK property, that can mean comparing the incumbent private bank with other private banks, specialist international lenders and large-loan mortgage providers. Where relevant, we can also assess whether Lombard or securities-backed borrowing should form part of the comparison.
The objective is broader than sourcing a mortgage. It is to establish whether the proposed debt structure remains competitive once loan cost, liquidity, investment relationships, residence, repayment strategy and future plans are considered together.
Monaco Resident With Substantial UK Property Debt?
Your private bank may be able to integrate the mortgage with investment management and wealth planning. That can be an excellent solution — but a £2m, £3m or £5m liability is still large enough to justify an independent benchmark.
Willow Private Finance can compare the incumbent private-bank proposal with other private banks, specialist international lenders and appropriate large-loan mortgage structures while working alongside your existing wealth, tax and legal advisers.
Explore Complex & UHNW Property Finance →Frequently Asked Questions
Key questions for internationally resident HNW clients considering how UK property debt should fit alongside private banking and wealth management.
Can a Monaco resident get a mortgage on UK property?
Potentially. UK lenders, specialist international lenders and private banks can consider Monaco-resident borrowers, but eligibility depends on factors including nationality, income, assets, source of wealth, property use, loan size, repayment strategy and the wider borrower profile.
Does a UK property mortgage have to be with the private bank managing the client's investments?
No. A private bank may offer an attractive integrated banking, investment and property-finance relationship, but borrowers can also compare other private banks, specialist lenders and large-loan mortgage providers. The appropriate route depends on the client's circumstances and objectives.
Why should HNW clients compare property debt separately from investment management?
A private bank can consider assets, income, liquidity and investments as part of a wider relationship, which can be valuable. An independent debt comparison can show whether the proposed mortgage structure, pricing, leverage and relationship requirements remain competitive against other lending routes.
Could Lombard lending be used instead of a mortgage for a UK property transaction?
In some circumstances securities-backed or Lombard lending can provide property liquidity, but it carries different risks from a conventional mortgage because the facility is linked to the value and composition of the investment collateral. Mortgage, private-bank and Lombard options should therefore be compared on cost, duration, collateral risk and repayment strategy.
When should someone moving from the UK to Monaco review their mortgage?
Ideally before the move where possible. A change in residence, income currency, property use or banking relationships can affect the lenders and structures available. Reviewing the debt before those changes take effect can preserve more options and identify whether the existing mortgage remains appropriate.

