| What it covers | Several self-contained flats on one title |
|---|---|
| Typical LTV | Up to 75%, sometimes lower |
| Valuation basis | Block value, investment value or sum of units |
| Unit numbers | Specialist lenders from 2 units; larger blocks often commercial |
| Borrower | Individual or limited company |
| FCA regulation | Not regulated |
Who is this for?
- Landlords buying a converted house split into flats
- Investors buying a purpose-built block of flats
- Owners refinancing a block after conversion
- Landlords considering splitting the title to sell or refinance flats
What is a multi-unit freehold block?
A multi-unit freehold block is a single building containing several self-contained flats, all owned on one freehold title. Each flat has its own front door, kitchen and bathroom. A typical example is a large Victorian house converted into four or five flats.
This differs from an HMO, where tenants share facilities. It also differs from owning several flats on separate leasehold titles.
How do lenders assess MUFB mortgages?
Lenders look at the total rent from all units and the value of the block. Typical considerations include:
- The number of units and whether each is self-contained
- The valuation method: block value, investment value or the combined value of each flat
- Your landlord experience, especially for larger blocks
- The condition of the building and any communal areas
- Planning consent and building regulations for converted blocks
Blocks valued as a whole are often worth less than the combined value of the individual flats. Some lenders value on the sum of the units, which can support higher borrowing. Larger blocks may be financed by commercial lenders.
Should I split the title?
Some owners create separate long leases for each flat. This can make it easier to sell or refinance individual units. It may also release value if flats are worth more individually.
Title splitting involves legal costs, lender consent and possible tax consequences. Selling flats individually also changes how you manage the building. Take legal and tax advice before deciding.
What are the risks?
A single mortgage over several units concentrates risk in one building. Major repairs, such as a roof or communal works, can be costly. Fire safety rules for blocks are stricter.
Converted blocks without proper planning or building regulations can be hard to finance. Energy standards for rented homes are also rising. The government has confirmed most privately rented homes in England should reach EPC C by 2030.
How much can I borrow on a freehold block?
Lenders usually apply a rent cover test across the whole block at a stressed rate, much like standard buy-to-let. They then compare this with their loan-to-value limit, often up to 75%. The lower figure sets the maximum loan.
Service costs, insurance and communal repairs are borne by the owner, so some lenders look closely at net income. A current tenancy schedule, with each flat's rent and tenancy dates, will help. Use our buy-to-let calculator for an early estimate.
What taxes apply to buying a block of flats?
Buying a block of flats usually counts as buying residential property. The 5% surcharge for additional properties typically applies in England and Northern Ireland. Multiple Dwellings Relief was abolished in 2024. Where a single purchase includes six or more dwellings, the buyer may be able to use non-residential rates instead. Take tax advice, as the rules are detailed. OMB does not give tax advice.
How does OMB help?
OMB is an independent, whole-of-market broker. We compare specialist buy-to-let lenders, commercial lenders and private banks that finance freehold blocks. We help you present rent schedules and property details clearly. We can also arrange bridging for conversions or quick purchases. See our portfolio landlord page if you own four or more mortgaged properties.
Run the numbersMaximum loan from rent using lender ICR stress tests (125% / 145%).
Buy-to-let calculatorHow we arrange it
- Free 15-minute call about the block and plans
- Review rent schedule, planning and title
- Compare specialist and commercial lenders
- Application, valuation and legal work managed
- Completion, or refinance after works
Example cases
Illustrative examples based on the type of case we arrange. Not specific clients; every case is different.
£770,000 at 70% LTV on a freehold block of four flats in Croydon
£546,000 MUFB refinance at 70% LTV after converting a Sheffield house into five flats
£2.08m at 65% LTV on a ten-flat freehold block in Hackney for a family company
From the blogMulti-unit freehold blocks: how lenders value them and when to split titles
Read the articleFrequently asked questions
What is an MUFB mortgage?
It is a mortgage on a single freehold building containing several self-contained flats. One loan covers the whole block. Lenders assess the combined rent and the value of the building. Each flat must usually be self-contained, with its own front door, kitchen and bathroom, for the property to qualify.
How many units can a multi-unit freehold mortgage cover?
It depends on the lender. Some specialist buy-to-let lenders start from two units and go up to around ten or more. Larger blocks are usually financed by commercial lenders. Some lenders also limit the size of loan or the number of units in one building. Your adviser can match the block to suitable lenders.
How is a freehold block valued?
Valuers may use the value of the block as a whole, an investment value based on rent, or the combined value of each flat. The block value is often lower than the sum of the units. The method used affects how much you can borrow.
What is the difference between an MUFB and an HMO?
In an MUFB, each flat is self-contained with its own kitchen and bathroom. In an HMO, tenants share facilities. Lenders treat them differently, and HMOs may need licensing. Some buildings combine both, with a mix of self-contained flats and shared rooms. These usually need a specialist lender.
Can I buy a freehold block through a limited company?
Yes. Many MUFB lenders accept limited company borrowers, often SPVs. Directors usually give personal guarantees. Take tax advice on the best structure. Many investors use a separate company for each block, while others hold several in one SPV. Lender criteria vary on group structures and experience, so check before setting up a company.
What deposit do I need for a block of flats?
Most lenders ask for at least 25%, lending up to 75% loan-to-value. Some lenders cap lower for larger or more complex blocks. Lender appetite depends on the property, the rent and your experience. Stamp duty and legal costs should also be budgeted.
Can I refinance a block after converting it?
Yes. Many investors buy and convert using bridging or development finance, then refinance onto an MUFB mortgage. Lenders will usually want planning consent, building regulations sign-off and completed works. Bridging finance is expensive short-term borrowing, so a clear refinance plan matters from the start.
Are multi-unit freehold mortgages regulated?
No. They are investment lending and are not regulated by the Financial Conduct Authority. Some consumer protections may therefore not apply. That means access to the Financial Ombudsman Service may be limited in some cases. OMB still gives advice to the same professional standards and will confirm any broker fee upfront.
Important: Most buy-to-let mortgages are not regulated by the FCA. Your property may be repossessed if you do not keep up repayments, and a receiver of rent may be appointed.