Commercial Mortgage Guide: How UK Business Property Finance Works from Deposit to Completion

Commercial Mortgage Guide (UK)

A commercial mortgage is finance secured against a property that is used for business purposes. Unlike residential lending, commercial mortgages are assessed based on both the strength of the business and the property's ability to support the loan—so the process can be more detailed and the requirements can vary between lenders.

This guide explains the main features of commercial mortgages in the UK, what lenders typically look for, the costs you may encounter, the steps involved in getting an application ready, and the key risks to consider.

In this guide

• What a commercial mortgage is (and how it differs from residential)
• Who can apply, and what it can fund
• Deposits, LTV, and how much you can borrow
• Rates, fees, and lender criteria
• Eligibility factors in detail
• The application process, step by step
• Why applications stall (and how to avoid it)
• Alternatives, regulation, and FAQs

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What is a commercial mortgage?

A commercial mortgage is finance secured against a property used for business purposes. It can be used to buy, refinance, or fund improvements to commercial property, and broadly covers two uses:

• Owner-occupied premises (where the business uses the property)
• Commercial investment properties (where the property is let and generates income)

Commercial mortgage terms are commonly structured over 5 to 25 years, depending on the lender, the asset, and the borrower's circumstances. Underwriting is usually more bespoke than residential lending because lenders consider both:

• Business performance (trading history, accounts, forecasts)
• Property risk (location, condition, rental demand, and valuation)

The term "commercial mortgage" is sometimes also used alongside investment property lending, including some scenarios that overlap with buy-to-let structures.

How commercial mortgages differ from residential

Commercial and residential lending are not just "different property types"—they are assessed differently:

• Property and income matter more. Residential mortgages focus largely on the borrower's personal affordability, whereas commercial lending places greater weight on the property's rental income (or the business's ability to generate income from the asset).
• Underwriting is more bespoke. Residential products are often standardised; commercial lending is judged case-by-case because properties vary in location, condition, tenancy, lease length, and expected future use.
• Documentation requirements are broader. Commercial applications usually require more detailed financial and property evidence.
• Deposits and LTV can be higher. Commercial lending commonly expects a larger deposit than many residential mortgages.

For a full side-by-side comparison, see our guide to commercial vs residential mortgages.

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Who can apply for a commercial mortgage?

Commercial mortgages can be suitable for a range of UK business structures and investors, including:

• Limited companies
• Sole traders
• Partnerships
• Commercial landlords
• Property investors
• Developers buying mixed-use or semi-commercial units

Lenders review applications individually. A strong track record and clear financial evidence generally help, while businesses with limited trading history or irregular income may need additional documentation and a more robust plan for repayment.

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What can a commercial mortgage fund?

Commercial mortgage finance may be available for many types of business property, such as:

• Offices
• Warehouses
• Retail units
• Industrial units
• Hotels
• Care homes
• Mixed-use buildings
• Semi-commercial properties
• Land (where development or investment plans are in place)

Some lenders are more comfortable with certain asset classes than others. If a property sits between categories (for example, semi-commercial or mixed-use), underwriting can be more complex and may depend on how the space is used and let.

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Deposit requirements (LTV) for commercial mortgages

Deposit levels are typically higher for commercial lending than for many residential mortgages. In many cases, lenders require a deposit in the region of 25% to 40% of the property value, which corresponds to a Loan-to-Value (LTV) range of roughly 60% to 75%.

Deposit and LTV can vary based on factors such as:

• Credit strength and the borrower's repayment profile
• Business performance and stability of income
• Property type and perceived risk
• Purpose of the loan (purchase, refinance, or other)
• Security offered and the overall deal structure

Worked example: deposit vs LTV

Because commercial mortgages can require higher deposits, it helps to think in terms of LTV. For a property valued at £300,000:

LTV ratio	Deposit needed	Mortgage sum
25%	£75,000	£225,000
30%	£90,000	£210,000
35%	£105,000	£195,000
40%	£120,000	£180,000

In some cases, borrowers may need to source the deposit separately. Lenders may also consider the combined effect of the mortgage and any additional funding arrangements when assessing affordability.

For a deeper look at deposits, see how much deposit do I need for a commercial mortgage?

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How much can you borrow?

Borrowing capacity depends primarily on the value of the property and the ability to service the debt.

For investment properties, lenders focus on rental income and often use rental coverage-style assessments (a form of debt service coverage) to judge whether income is sufficient to meet mortgage payments with an appropriate buffer. They may also stress-test the figures to check resilience, and consider:

• Current rent and whether it is supported by the lease
• Lease length and any break clauses
• Tenant quality (where the lender reviews tenant risk)
• Vacancy risk—how income would be covered if the property were empty or let on less favourable terms

For owner-occupied premises, lenders may consider trading performance and the business's capacity to meet repayments.

As a result, two borrowers with the same property value could be offered different loan amounts depending on the strength and consistency of the financial evidence.

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Commercial mortgage interest rates and pricing

Commercial mortgage pricing can vary widely. The interest rate you may be offered is influenced by multiple variables, including:

• Business and personal credit profile (where relevant)
• Trading history and profitability
• Deposit size / LTV
• Property type and risk profile
• Loan structure and purpose

Because commercial lending is more bespoke, it's common for rates to differ substantially even for similar properties. Pricing can also reflect the lender's view of exit options, valuation risk, and the overall underwriting strength.

For more detail, see our commercial mortgage rates guide.

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Typical commercial mortgage fees and costs

Commercial mortgages can involve a range of fees. Common costs include:

• Arrangement fees
• Broker fees (where applicable)
• Valuation fees
• Legal fees
• Exit fees / early repayment charges (depending on the loan terms)

The exact fee structure depends on the lender and the complexity of the transaction. When comparing options, it's useful to consider both upfront costs and any costs that may arise if you repay early or refinance.

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Lender criteria and the checks you should expect

Commercial lenders typically assess applications using a combination of business and property information. Expect scrutiny of:

• Profit history (often via filed accounts)
• Bank statements
• Credit record
• Business forecasts
• Property condition and valuation
• Tenant strength (for let properties)
• Rental or trading income levels

Property factors lenders weigh

• Property type—offices, retail units, industrial/warehouse space, mixed-use, and other commercial assets
• Tenure and legal structure—lease length, freehold vs leasehold, and any restrictions
• Condition and build quality—whether the asset is suitable for its intended use
• Location and marketability—how easily the property could be let or sold if required
• Valuation vs asking price—the lender's valuation may differ from an asking price
• Rental income (if let)—rent level, lease terms, and the reliability of the income stream

If a property is vacant, under renovation, or has unusual lease terms, the assessment may depend heavily on how quickly income can be established and sustained.

Borrower and business factors

• Borrower structure—individuals (often where the property is held personally) or limited companies. The lender's approach may differ depending on whether the case is assessed as personal lending, company lending, or a combination.
• Credit profile—credit history and any adverse markers, existing debts and overall leverage, and how consistently obligations have been met.
• Business performance (where relevant)—trading history, profitability and cashflow, business accounts and management information, and the borrower's experience in the relevant sector.

For property investment cases, the business element may be less central than the rental income and the property's suitability.

How loan purpose affects underwriting

The reason for borrowing can change the underwriting approach:

• Purchase of commercial premises
• Remortgage/refinance—often focused on performance since acquisition and the current risk profile
• Property investment
• Supporting business expansion
• Development or major works—often assessed on project viability and exit plans, sometimes via development finance rather than a standard commercial mortgage

Documents lenders commonly request

Depending on the case, lenders may request documents such as:

• Several years of accounts
• Bank statements
• A detailed business plan
• Forecasts for the next 12 months (or longer, depending on the lender)
• Information on assets and liabilities
• Lease and tenancy documentation (where the property is let)
• Identification and basic borrower details

Being organised can help reduce delays, particularly where underwriting relies on clear, consistent financial reporting.

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Types of commercial mortgage

Commercial mortgage products can be structured in different ways depending on how the property is used and the borrower's objectives. Common categories include:

• Owner-occupied commercial mortgages
• Commercial investment mortgages
• Semi-commercial mortgages
• Bridging finance for commercial property (short-term funding)
• Development finance (for projects where value is created through works)

If a property is semi-commercial or mixed-use, lending may be assessed differently to a fully let investment or a fully owner-occupied site.

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The commercial mortgage application process

While each lender's process differs, a typical commercial mortgage journey often includes:

1. Clarify the purpose and structure of the deal. Confirm what the property will be used for (and whether it matches the lender's acceptable categories), whether it is owner-occupied or let to tenants, the purchase price and deposit available, and whether works are planned and how they will be funded.
2. Gather financial documents. Accounts, bank statements, forecasts, lease/tenancy documentation, and evidence of the deposit and funding sources.
3. Property valuation and survey. The lender will typically require a valuation and may instruct an independent surveyor to confirm the property is suitable for lending, that its condition and characteristics are understood, and that the value supports the proposed loan. For properties needing refurbishment or with specific risks (unusual layouts, planning constraints, or condition issues), the survey findings can influence the lender's view of the deal.
4. Submit the application with the required underwriting pack.
5. Legal checks and conveyancing. The lender's solicitors review the legal position of the property and transaction—ownership and title matters, any restrictions or unusual legal terms, lease and tenancy documentation, and ensuring the lender's security can be properly put in place. Commercial legal processes can take time, particularly where leases, licences, or property documentation are complex.
6. Underwriting and decision.
7. Mortgage offer. Review the offer terms carefully, including any conditions attached.
8. Completion. Funds are released and the property transaction is finalised.

The timeline can vary depending on complexity, document readiness, and how quickly the valuation and legal work progress.

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Why commercial mortgage applications stall

Commercial applications can slow down for a range of reasons. Some of the most common include:

• Incomplete or inconsistent documentation
• Unclear intended use of the property
• Property condition or valuation concerns identified during survey
• Lease/tenancy issues (for example, missing information or mismatches)
• Funding gaps or deposit sources that are not evidenced
• A valuation coming in lower than expected

Addressing these points early is often the difference between a smooth process and repeated delays.

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Benefits of a commercial mortgage

For many businesses and investors, commercial mortgages can offer advantages such as:

• Building equity through ownership rather than paying rent indefinitely
• Longer repayment terms compared with some alternative finance options
• Potential rental income for investment properties
• Greater control over premises used for operations

Commercial lending can also support strategic plans such as expansion, refinancing to improve cash flow, or repositioning a property.

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Risks to consider before committing

Commercial mortgages can be a strong tool, but they also carry risks that should be understood upfront:

• Higher interest costs than some residential products
• Larger deposit requirements
• Valuation risk, including the possibility of a valuation lower than expected
• Security and enforcement considerations (the lender holds security over the property)
• Market and occupancy risk, particularly for investment properties
• Fees and time costs, including valuation, legal work, and potential early repayment charges

A careful review of the deal structure, repayment plan, and property assumptions is essential.

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How to improve your chances of approval

Commercial lending decisions are heavily influenced by evidence and structure. Practical steps that can strengthen an application include:

• Improve business credit where possible
• Reduce existing debt and demonstrate capacity to service the new loan
• Increase deposit to reduce LTV (where feasible)
• Prepare clear forecasts that align with trading history
• Provide consistent financial information
• Present a robust business plan tailored to the property and the lender's likely concerns
• Ensure the application is complete with supporting documents ready for underwriting
• Demonstrate a clear repayment plan supported by rental income and/or cashflow
• Strengthen property fundamentals—marketability, condition, and income reliability
• Show a credible plan for any changes (for example, letting up a vacant unit, a refinancing strategy, or a works timeline)

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Alternatives to a commercial mortgage

A commercial mortgage isn't the only way to finance property. Depending on timing, risk appetite, and the stage of a project, other options may be worth considering:

• Bridging finance—useful where funding is needed quickly, such as when waiting for a sale to complete or while arranging longer-term finance. See our commercial bridging finance guide.
• Business or personal loans—a sometimes more straightforward route where property-secured lending isn't suitable.
• Government-backed start-up support (where relevant)—may be available for eligible businesses to help with early-stage costs, typically assessed separately from property-secured lending.

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How commercial lending is regulated

Commercial mortgages are not always treated the same way from a regulatory perspective. In many cases, commercial lending is arranged in the name of a limited company and may fall outside certain consumer mortgage protections. Where lending is arranged in a personal name, different regulatory considerations can apply, and lenders may structure and assess applications differently depending on borrower status and how the finance is set up.

The Financial Conduct Authority (FCA) does not regulate some forms of buy-to-let mortgages and commercial mortgages, but it does regulate some bridging loans. For official guidance, see the FCA website.

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Where a broker can add value

Commercial lending can involve multiple moving parts: property details, income assumptions, documentation, and lender-specific requirements. A broker can help by:

• Clarifying the most suitable lending routes for the property and purpose
• Helping prepare an application in a way that aligns with lender expectations
• Comparing options across the market rather than relying on a single product view

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Frequently asked questions (commercial mortgage guide)

How long does a commercial mortgage take?

Timelines vary, but many commercial cases progress over several weeks. Complex cases, incomplete documentation, or valuation and legal delays can extend the process.

Can you get a commercial mortgage with bad credit?

It may be possible, but a weaker credit profile can affect pricing and deposit requirements. Lenders may also require stronger evidence of income, cash reserves, or additional security.

Are commercial mortgages interest-only?

Some commercial products may be interest-only, but availability depends on the lender, the property, and the borrower's repayment strategy.

Do commercial mortgages have early repayment charges?

Many commercial mortgages include early repayment charges or fees depending on the term and conditions. Reviewing the loan offer and repayment clauses is important.

What documents do lenders usually request?

Commonly requested documents include accounts, bank statements, forecasts, a business plan, and lease/tenancy details where the property is let. The exact list depends on the lender and the nature of the property and borrower.

Can commercial mortgages be used for mixed-use property?

Often, yes. However, mixed-use and semi-commercial properties may be assessed differently, and lenders may focus on how the space is used and/or let.

Are commercial mortgage rates fixed or variable?

Commercial mortgages can be structured as fixed or variable depending on the product. The choice may depend on risk appetite and cash flow planning.

What affects commercial mortgage interest rates?

Pricing is influenced by factors such as credit profile, trading history, deposit size, property type, and the overall risk assessment.

Can a new business get a commercial mortgage?

New businesses may be considered, but lenders often look for credible forecasts, strong exit plans, and sufficient evidence to support repayment.

Do lenders check personal credit for business lending?

In many cases, lenders may consider personal credit information alongside business information, particularly where directors or individuals have a role in the application.

Can you refinance a commercial mortgage?

Refinancing may be possible where the lender's criteria are met and the property and financial position support the new terms.

What types of property qualify for commercial mortgages?

Typical qualifying property types include offices, shops, warehouses, industrial units, hotels, and semi-commercial buildings, subject to lender appetite and underwriting.