Semi-commercial and mixed-use mortgages: what to prepare

A shop with flats above, or a building combining offices and rented accommodation, needs a clear explanation of each part. For a semi-commercial mortgage enquiry, start with how the whole property is used, who occupies it and the income available to support the borrowing.

This guide is for UK investment and commercial requirements. UK Mortgage Finance deals only in unregulated property finance for investment and commercial purposes.

What is a semi-commercial or mixed-use property?

These terms commonly describe a property with both commercial and residential parts. A familiar example is a ground-floor shop with a separately let flat above it. Lenders can classify the same building differently, so describe the actual layout and use rather than relying on its label.

A building containing only residential flats is a different starting point. For that requirement, see our business buy-to-let information. If your business will trade from the commercial part, explain who will own the property and who will operate the business; they may be different legal entities.

Tell us at the outset if you or a family member live, or plan to live, in any part of the property. This may affect the type of finance required and whether the enquiry falls within the services we provide. A commercial unit in the building does not automatically make the mortgage unregulated.

Prepare a simple summary of each unit

You do not need a complete application pack to make an initial enquiry. A short breakdown helps separate the commercial and residential parts:

Use and layout: what each unit is used for, its approximate size and how it is accessed.
Occupancy: whether it is let, empty or used by your own business, and any planned changes.
Income: current rent for each let unit, shown separately from any hoped-for future rent. Flag rent-free periods or arrears.
Agreements: available leases and tenancy agreements, including their remaining terms and any break dates.

Example: a shop with two flats

For this illustrative example, list the shop and each flat separately. If the shop is empty, say so; do not present an estimated future rent as rent already being received. If your own company trades from the shop, identify the company and explain any rent it pays to the property owner. The relationship between the businesses and the property matters.

This is a preparation example, not a UKMF case study or an indication that a lender would accept the property.

What else should you have to hand?

Property details: address, purchase price or estimated value, condition, and whether it is freehold or leasehold. Include a sales brochure or floor plan if available.
Ownership: who owns or will buy the property, including the company name where relevant, and your experience with this type of property.
Borrowing: the amount requested, deposit or equity available, source of the deposit and any existing secured borrowing.
Purpose: purchase or refinance, any capital you want to release and what it will be used for.
Business information: if your own business occupies the premises, the latest accounts or management figures available.
Your plan: preferred timescale, proposed works or changes of use, and how repayments would be supported.

Tell us about uncertainty as well as confirmed facts. Proposed conversion works, vacant units or leases still being negotiated should be explained before treating the property as a straightforward let investment. The information a lender ultimately requires will depend on the case.

Compare the whole borrowing proposal

The headline interest rate is only part of the decision. Ask for a clear explanation of the repayment basis, term, fees, any early repayment charges and the security or guarantees required. Budget for valuation and legal costs as well as any lender and broker fees. Ask your solicitor or tax adviser about taxes and other purchase costs relevant to the transaction.

Our commercial mortgage calculator can illustrate payments using assumptions you enter. It does not assess mixed-use eligibility, value the property or provide a lending offer.

Common questions

How much deposit will I need?

There is no single deposit percentage that applies to every mixed-use property. The loan available depends on the lender’s criteria and assessment of the property, income and borrower. Explain the deposit or equity you actually have so the requirement can be assessed on that basis.

Can I enquire if the commercial unit is empty?

Yes, you can discuss the requirement. Provide the vacancy details, any letting plans and the income currently received elsewhere in the building. Whether finance is available, and on what terms, still needs individual assessment.

Can a limited company own the property?

Company ownership can be considered, subject to the case and lender. Identify the proposed borrower and any connected trading company. Choosing personal or company ownership has wider implications; discuss those with your own tax and legal advisers.

Discuss your mixed-use property

Start with the property address, how each part is occupied, the amount you need and your intended timescale. We can explain what information is needed next for an initial assessment.

Discuss a mixed-use requirement

For the wider commercial mortgage process, read our commercial mortgage information. For company-held residential investments, see limited-company buy-to-let mortgages.

Every application remains subject to individual circumstances, valuation, underwriting, legal checks and lender criteria. YOUR PROPERTY MAY BE AT RISK IF YOU DO NOT KEEP UP REPAYMENTS ON ANY LOAN SECURED AGAINST IT.