HMO Mortgages: A Complete Guide for UK Landlords - Fees Free Buy To Let Mortgage Adviser

An HMO mortgage is a specialist finance product designed for landlords who are buying or remortgaging a House in Multiple Occupation (HMO). These are properties where three or more tenants from more than one ‘household’ share facilities like a kitchen and bathroom.

Due to the more complex nature of the tenancy and property management, securing an HMO mortgage involves a different process and stricter criteria than a standard buy-to-let loan. This guide walks you through everything you need to know.

Key takeaways

An HMO mortgage is a specialist loan for properties rented by three or more tenants from at least two different households.
Lenders have stricter criteria for HMOs, often requiring landlord experience and a larger deposit, typically 25% or more.
The property must have the correct HMO licence from the local council before most lenders will release funds.
HMO mortgage affordability is based on the property’s total potential rental income, which is often higher than a standard buy-to-let.
Using a specialist mortgage broker is crucial for finding the right lender and navigating the complexities of HMO finance.

What is an HMO Mortgage?

An HMO mortgage is a specific type of buy-to-let mortgage for a property legally defined as a House in Multiple Occupation. A property is considered an HMO if it is occupied by at least three people who are not from the same household (e.g., a family) but share facilities. These are sometimes referred to as ‘house shares’.

Because HMOs are seen as a higher-risk, higher-complexity investment by lenders, they fall outside the scope of standard buy-to-let products. Lenders have specialist products designed to cater for this market, which come with their own unique set of rules, affordability calculations, and criteria.

How an HMO Mortgage Differs from a Standard Buy-to-Let Loan

An HMO mortgage is fundamentally different from a standard buy-to-let mortgage because lenders view the underlying asset and income stream as more complex. A standard buy-to-let mortgage is for a property let to a single family or household on one tenancy agreement, whereas an HMO has multiple, separate tenancies.

The key differences include:

Perceived Risk: Lenders see more risk in HMOs due to higher tenant turnover, increased wear and tear, and the need for more intensive management and regulatory compliance. This is reflected in their criteria and pricing.
Rental Calculation: Affordability for a standard buy-to-let is based on the single rental income. For an HMO, lenders calculate affordability based on the total rental income from all rooms. This can often lead to a larger loan size relative to the property’s value, but the stress tests are usually more stringent.
Valuation: A surveyor may value an HMO property on a ‘bricks and mortar’ basis (its value as a single family home) or a commercial basis (its value as a rental business). The valuation method depends on the lender, the size of the HMO, and the local market. For a comprehensive look at the process, see our HMO Buy to Let Mortgage: A Complete Guide for UK Landlords.
Lender Choice: The number of lenders offering HMO products is smaller than in the standard buy-to-let market. Many mainstream banks do not offer them, meaning you often need to approach specialist lenders.

What are the Lender’s Criteria for an HMO Mortgage?

Lenders have a specific set of criteria you must meet to be eligible for an HMO mortgage, which is typically stricter than for other property types. While requirements vary between lenders, most will assess the following key areas.

Applicant Criteria

Landlord Experience: Many, though not all, lenders require you to have experience as a landlord, often for at least 12-24 months. First-time landlords can still find lenders, but their options will be more limited.
Income: Some lenders have a minimum personal income requirement for the applicant (e.g., £25,000 per year), separate from any rental income, to ensure you can cover void periods.
Credit History: A clean credit history is preferred. While some specialist lenders may consider applicants with minor adverse credit, it will reduce your product options.

Property Criteria

Property Location: Lenders are cautious about an oversupply of HMOs in a particular area. They will check the local market demand.
Number of Rooms: Most lenders have a maximum number of lettable rooms they will finance, often capping it at 5 or 6 bedrooms. For larger properties (Sui Generis HMOs with 7+ rooms), you will need a highly specialist commercial mortgage.
Licensing: The property must have the correct HMO licence for its size and location. Lenders will not release funds without it.

How Much Deposit is Needed for an HMO Mortgage?

You will typically need a larger deposit for an HMO mortgage compared to a standard buy-to-let, usually a minimum of 25% of the property value. This means the maximum Loan-to-Value (LTV) available is often 75%.

For some landlords, especially those with less experience or those purchasing a larger HMO, the deposit requirement could be as high as 30-40%. The larger deposit reflects the higher risk the lender is taking on. The exact amount will depend on your experience, the property itself, and the specific lender’s criteria. A specialist broker can help you compare HMO mortgage options to find the most suitable LTV for your situation.

HMO Licensing and Mortgages: What You Need to Know

Having the correct HMO licence is a legal requirement and a critical condition for getting a mortgage. Lenders will not proceed with an application if the property does not meet local and national licensing standards.

There are three types of licensing in England and Wales:

Mandatory Licensing: This applies nationwide to any HMO with five or more tenants from more than one household.
Additional Licensing: A local council can implement this to require smaller HMOs (e.g., with three or four tenants) in a specific area to be licensed.
Selective Licensing: This is introduced by a council to cover all privately rented properties, including HMOs, in a designated area to tackle issues like poor housing conditions.

Before you even apply for a mortgage, you must confirm what type of licence the property requires. Lenders will expect to see proof that a licence has been granted, or at the very least that a valid application has been submitted, before they will release the mortgage funds. You can learn more by reading our guide on whether you need a licence before applying for an HMO mortgage.

Pros and Cons of Investing in HMO Properties

Investing in HMOs can be highly rewarding, but landlords should be aware of both the significant benefits and the potential drawbacks before committing.

Pros of HMOs

Higher Rental Yields: The primary attraction of HMOs is the potential for much higher rental income compared to a single-let property of the same size.
Reduced Void Impact: If one tenant leaves, you still have income from the other rooms, which reduces the financial impact of void periods.
Strong Tenant Demand: In areas with universities, hospitals, or large employers, there is often consistent demand from students, young professionals, and contract workers.

Cons of HMOs

Intensive Management: Managing multiple tenants, individual contracts, and shared spaces requires significantly more time and effort.
Higher Costs: Setup and running costs are higher. This includes licensing fees, meeting stricter fire safety standards, and often higher utility bills if included in the rent.
Stricter Regulation: HMOs are heavily regulated, and landlords must adhere to stringent management regulations and local council standards.

How to Get an HMO Mortgage: A Step-by-Step Guide

Securing an HMO mortgage is a more involved process than other property finance, but it can be navigated smoothly with the right preparation and expert guidance.

Step 1: Speak to a Specialist Broker

This should be your first step. An independent broker who specialises in HMOs will know which lenders are active in the market, understand their niche criteria, and can present your application in the best possible light. Their expertise is invaluable in avoiding rejections and finding the most competitive terms.

Step 2: Prepare Your Documents

Gather all the necessary paperwork. This will include proof of identity and address, details of your income (payslips, tax returns), your landlord history (tenancy agreements, portfolio details), and full details of the target property.

Step 3: Check Licensing and Get a Decision in Principle

Work with your broker to identify the right lender and get a Decision in Principle (DIP). This confirms the lender is likely to approve your application, subject to valuation and final checks. At this stage, you must have confirmed the property’s licensing requirements with the local council.

Step 4: Submit a Full Application and Valuation

The full mortgage application is submitted. The lender will then instruct a surveyor to conduct a valuation of the HMO property. The surveyor will assess its condition, value, and suitability as a rented property, as well as the expected rental income.

Step 5: Mortgage Offer and Completion

If the valuation is successful and the underwriters are satisfied, the lender will issue a formal mortgage offer. Once your solicitor has completed all the legal work, the mortgage funds will be released to complete the purchase or remortgage.

Frequently Asked Questions

Can a first-time landlord get an HMO mortgage?

Yes, it is possible for a first-time landlord to get an HMO mortgage, but the options are limited. Many lenders require at least 12-24 months of experience, but a few specialist lenders will consider applicants with a strong financial profile and a solid business plan.

Are interest rates higher for HMO mortgages?

HMO mortgage interest rates are often slightly higher than for standard buy-to-let products. This reflects the lender’s increased risk perception due to more complex management and higher tenant turnover. However, the higher rental yield from an HMO can often offset the increased mortgage cost.

Do I need a special valuation for an HMO property?

Yes, lenders use a valuer with experience in HMO properties. They will assess the property’s condition, check room sizes, and verify that it meets safety standards. The final valuation may be based on its value as a family home or its commercial value as a rental business.

Can I get an HMO mortgage through a limited company?

Yes, many specialist lenders offer HMO mortgages to limited companies (SPVs). Holding property in a limited company can offer tax advantages for higher-rate taxpayers. The application will be assessed based on the company directors’ experience and financial standing.

How many rooms can an HMO property have for a mortgage?

Most HMO mortgage products are for properties with up to 6 lettable rooms. For properties with 7 or more rooms, known as ‘Sui Generis’ HMOs, you will typically require a more specialist commercial mortgage product, which has different criteria and is offered by fewer lenders.

Is it harder to get a mortgage for a property in an Article 4 area?

Yes, it can be more difficult. An Article 4 direction removes permitted development rights, meaning you need full planning permission to convert a family home into an HMO. Lenders will require proof that the correct planning permission is in place before they will lend.