Mortgage guide
Portfolio mortgages using a hunting licence or Lombard loan
Portfolio mortgages can be structured alongside a hunting licence or Lombard loan to support larger or more complex borrowing requirements for portfolio landlords. These structures are typically used where borrowers hold substantial liquid or investment assets and wish to enhance borrowing capacity, manage risk, or reduce property-level Loan to Value (LTV).
Portfolio mortgages using a hunting licence or Lombard loan
Portfolio mortgages can be structured alongside a hunting licence or Lombard loan to support larger or more complex borrowing requirements for portfolio landlords. These structures are typically used where borrowers hold substantial liquid or investment assets and wish to enhance borrowing capacity, manage risk, or reduce property-level Loan to Value (LTV).
A hunting licence arrangement allows lenders to consider future asset realisation or additional security as part of the underwriting process, which can be relevant where a portfolio is being expanded, refinanced, or restructured. This approach is more common in specialist lending and private banking environments, where underwriting is relationship-led rather than purely transactional.
A Lombard loan is a form of secured lending against investment assets, such as equities or managed portfolios, and can be used alongside a portfolio mortgage to provide additional liquidity. In portfolio mortgage scenarios, Lombard loans are often used to reduce reliance on property equity, manage concentration risk, or fund deposits and costs without increasing property-level borrowing. These facilities are most commonly available through private banking, and in some cases through high street banks, typically for lending above £500,000.
When used together, portfolio mortgages and Lombard or hunting licence structures allow lenders to assess affordability and risk across property assets and financial assets, rather than relying solely on rental income and property values. This can provide greater flexibility for portfolio landlords with diversified balance sheets, while still requiring careful structuring to meet lender criteria, stress testing, and risk controls.
Portfolio stress test calculator
The calculator runs the background test on a whole portfolio: the rental cover before and after a new purchase, the rent above or below the lender's ratio, the further borrowing that ratio allows and the aggregate loan to value. The starting figures are Landlord B from the worked example on this page, with every loan stressed at 5.5% and a 125% ratio. Enter your own totals and the share of loans on five-year fixes, then move the new property's rent to see how far it lifts the portfolio's cover.
Portfolio landlord mortgage criteria
| Criterion | How it works |
|---|---|
| Definition | Four or more distinct mortgaged buy to let properties, held alone or jointly, counted in aggregate across lenders (SS13/16). Lenders differ on whether the property being applied for counts and on how they count properties held in a limited company. |
| Assessment | A specialist underwriting approach that looks at the whole portfolio as well as the new loan, for banks and building societies under SS13/16. Other lenders set their own approach. |
| Property schedule | Every property: ownership, value, outstanding loan, lender, monthly payment and rent. |
| Stress rate | At least 5.5% over the first five years, or the fixed rate where it is fixed or capped for five years or more (SS13/16). On the cases we arrange, commonly around 5.5% on two-year fixes and around 4.5% on five-year fixes. |
| Portfolio stress test | Rent across the portfolio against stressed interest on all its loans, at the lender's ratio. In our experience commonly 125% for companies and basic-rate taxpayers and 145% for higher-rate personal borrowers. How the existing properties are tested varies by lender. |
| Aggregate loan to value | Some lenders cap the loan to value across the whole portfolio as well as on each loan, and the cap varies by lender. In our experience 85% is the ceiling on a buy to let loan. |
| Portfolio size and exposure | Some lenders cap the number of properties or their total lending to one landlord; others set no property limit. |
| Business plan and cash flow | Lenders following SS13/16 may ask for a business plan and the cash flows of every property. Requirements vary by lender. |
| Assets, liabilities and tax | A statement of assets and liabilities, and the income and tax position, including the tax on rental profit. |
| Ownership structure | Personal names, a limited company, or both. Companies and individuals are taxed differently on rental profit, which can change the rental cover a lender asks for. |
| Experience and conduct | The landlord's track record is reviewed, and arrears on any property are assessed with the rest of the credit file. |
| Regulation | Business buy to let is outside the FCA's mortgage rules. A loan to an individual on a property the borrower or a close relative lives in is a regulated mortgage contract. |
Related case studies
Frequently asked questions
Can a Lombard loan be used with a property portfolio mortgage?
Yes, a Lombard loan can be used alongside a property portfolio mortgage. It is secured against investment assets, such as shares or funds held with the lender, rather than against property. In the UK it is most commonly offered through private banking, and in some cases by high street banks. Each lender sets its own minimum loan size and the investments it will lend against. A landlord with substantial investments can use it to add to a deposit or to reduce the loan to value on the property borrowing.
What is a background portfolio stress test?
A background portfolio stress test checks whether the rent from all of a landlord's mortgaged properties covers the interest on all their loans, at a stressed rate, by the ratio the lender requires. It sits alongside the test on the new property, and a portfolio below the lender's background ratio can be declined for a new loan even if the new property passes its own test. Lenders run it differently: some stress every existing loan at the same rate as the new one, and others use a lower background ratio or review the existing portfolio without a set ratio. Banks and building societies apply it within the Prudential Regulation Authority's buy to let standards (Bank of England: SS13/16).
What is a portfolio mortgage?
A portfolio mortgage is finance for a landlord with several buy to let properties. It can be a set of separate mortgages, each assessed with the rest of the portfolio in view, or one facility secured on several properties. A borrower with four or more distinct mortgaged buy to let properties is a portfolio landlord under the Prudential Regulation Authority's underwriting standards, and banks and building societies look at affordability, risk and loan to value across the whole portfolio as well as the new loan (Bank of England: SS13/16). A facility over several properties can make each property security for the whole debt.
What stress rate do lenders use for portfolio landlords?
Banks and building societies following the Prudential Regulation Authority's buy to let standards assume an interest rate of at least 5.5% over the first five years when they test the rent. Where the loan is fixed or capped for five years or more, they can use the fixed rate itself, the pay rate (Bank of England: SS13/16). Other lenders set their own tests. On the cases we arrange, lenders commonly stress two-year fixes at around 5.5% and five-year fixes at around 4.5%, and then apply their own rental cover ratios, commonly 125% for limited companies and basic-rate taxpayers and 145% for higher-rate personal borrowers. Stress rates and ratios are lender criteria and change.
Are portfolio mortgages cheaper?
Not necessarily. A portfolio landlord can borrow on standard buy to let products or on products designed for portfolios. Portfolio products sit in a narrower market, so they are cheaper only where the products available compare well on total cost. Specialist portfolio pricing can be higher. A facility covering several properties, on the other hand, can save on separate valuation and legal work, and some products include a free valuation or free legal work. The total cost over the fixed period, fees included, is a fairer test than the headline rate. Mortgage Lane charges no broker fee on portfolio loans.
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