A commercial mortgage is a long-term loan used to purchase or refinance property for business or investment purposes. Instead of borrowing to buy a home, the finance is secured against a commercial property such as an office, shop, warehouse, industrial unit, factory, medical premises or certain mixed-use properties.
The basic principle is straightforward: you contribute some of the purchase price, a lender provides the remaining finance, and the property is used as security for the loan. You then repay the mortgage according to the agreed terms.
However, getting a commercial mortgage is generally more involved than getting a standard residential mortgage. Lenders look at the property, the proposed use, the borrower’s financial position, business performance, income, existing debts and the overall ability of the loan to be repaid.
For a business owner, the mortgage may be supported primarily by the profits and cash flow of the trading business. For a commercial property investor, rental income and the strength of the tenancy may be particularly important.
This guide explains how commercial mortgages work in the UK, how the application process normally works, what lenders assess, how the property valuation fits into the process, and what happens before the mortgage completes.

What Is a Commercial Mortgage?

A commercial mortgage is a loan secured against property that is used for business or commercial purposes. HMRC recognises commercial mortgages as one form of longer-term borrowing that companies can use when purchasing business premises.
For example, a company might use a commercial mortgage to buy:

  • An office
  • A warehouse
  • A retail unit
  • An industrial unit
  • A factory
  • A workshop
  • A trade counter
  • A medical or professional practice premises
  • A commercial investment property
  • Certain mixed-use or semi-commercial properties
    The lender takes security over the property. This means the property provides protection for the lender if the borrower fails to meet the agreed repayments.
    The mortgage is normally repaid over an agreed term. Depending on the lender and circumstances, repayment can be structured on a capital-and-interest basis or, in some cases, interest-only.
    The important point is that commercial mortgages are assessed individually. There is not usually one standard rate, borrowing amount or lending criteria that applies to every business.

How Does a Commercial Mortgage Work?

At a basic level, a commercial mortgage works in a similar way to other secured loans:

  1. You identify a suitable commercial property.
  2. You establish how much finance is required.
  3. A lender assesses the borrower, property and proposed transaction.
  4. The property is independently valued.
  5. The lender decides how much it is prepared to lend and on what terms.
  6. Legal work is completed.
  7. The mortgage completes and the funds are released.
  8. You make repayments according to the agreed mortgage terms.
    The major difference is the level of underwriting involved.
    With a residential mortgage, affordability is often based heavily on personal income and household expenditure. With commercial lending, the lender may need to understand how the business generates money, how profitable it is, what the property will be used for and whether the proposed borrowing is sustainable.
    For an investment property, the lender may instead focus heavily on rental income, lease terms and the financial strength of the tenant.
    That means the same property could potentially produce different lending outcomes depending on who is borrowing, how the property will be used and how the loan will be repaid.

What Can a Commercial Mortgage Be Used For?

Commercial mortgages can be used for several different purposes.

Buying Business Premises

One of the most common uses is purchasing premises for your own business.
For example, a manufacturing company currently paying £4,000 a month in rent may decide to purchase its own industrial unit. A commercial mortgage could provide part of the purchase price, with the company contributing the remainder.
Owning the premises can provide greater control over the property and remove the uncertainty associated with renewing a commercial lease.

Buying Commercial Investment Property

A commercial mortgage can also be used by investors purchasing property to let to businesses.
Examples could include:

  • Offices
  • Shops
  • Industrial units
  • Warehouses
  • Business parks
  • Multi-let commercial buildings
    In this situation, the lender will generally consider the rental income and the quality of the investment as part of its assessment.

Refinancing an Existing Commercial Mortgage

Commercial mortgages are not only used for purchases. A business or investor may refinance an existing commercial mortgage when the current arrangement is approaching its end, when better terms may be available, or when there is another reason to restructure the borrowing.
Refinancing can also be considered where an owner wants to release some equity from a commercial property, subject to lender criteria and affordability.

Buying Property Through a Company

A commercial property can sometimes be purchased through a limited company or another corporate structure.
The lender will consider the company, its directors, the property and the intended use of the finance. The structure can affect the application and documentation required, so it is important to establish the correct borrowing structure before progressing too far.

Who Can Apply for a Commercial Mortgage?

Commercial mortgages can be available to a range of borrowers, depending on the lender and transaction.
Potential borrowers can include:

  • Limited companies
  • Sole traders
  • Partnerships
  • Property investors
  • Established businesses
  • Certain newer businesses
  • Special purpose vehicles (SPVs)
  • Individuals purchasing commercial investment property
    Eligibility depends on the lender’s criteria and the circumstances of the application.
    A strong application is not simply about having a particular turnover or deposit. Lenders want to understand the complete transaction and how the proposed borrowing will be repaid.

What Do Lenders Look At?

A commercial mortgage lender normally considers several parts of an application rather than relying on a single figure.

1. The Property

The property itself is important because it forms the lender’s security.
The lender may consider:

  • Location
  • Property type
  • Condition
  • Marketability
  • Value
  • Intended use
  • Existing tenants
  • Lease arrangements
  • Demand for similar properties
    A property that is easy to sell in a well-established market may be viewed differently from a highly specialised building with a limited pool of potential buyers.

2. The Borrower

The lender will assess who is borrowing the money.
This could involve reviewing the company’s trading history, directors, accounts, existing borrowing and overall financial position.
For property investors, the lender may examine investment experience and the performance of the property portfolio.

3. Affordability

The lender needs confidence that the mortgage can be serviced.
For an owner-occupied property, this can mean examining the underlying business’s profits and cash flow.
For an investment property, rental income may form a significant part of the affordability assessment.
This is one reason commercial mortgage applications can involve more detailed financial analysis than a standard residential mortgage.

4. Loan-to-Value

Loan-to-value, or LTV, compares the proposed mortgage with the property’s value.
For example, if a property is valued at £800,000 and the mortgage is £560,000:
£560,000 ÷ £800,000 × 100 = 70% LTV
The remaining 30% represents the borrower’s equity in the property.
The maximum LTV available varies according to the lender, property and borrower. Current UK commercial mortgage guides commonly describe lending in the region of 60% to 75% LTV for many mainstream cases, although this is not a universal limit.

5. Credit History

Lenders can also examine the credit history of the business and relevant individuals.
A previous credit issue does not automatically mean a commercial mortgage is impossible, but it can affect which lenders may consider the case and the terms available.
The important factor is usually the full context: what happened, when it happened, whether the issue has been resolved and the current financial position.

What Happens During a Commercial Mortgage Application?

The exact process varies, but a typical application can follow these stages.

Step 1: Establish the Requirement

The first step is to establish exactly what you are trying to achieve.
For example:

  • Purchase an office for your business
  • Purchase a warehouse
  • Buy an investment property
  • Refinance an existing mortgage
  • Release equity
  • Move from renting to owning
    The purpose of the finance can influence which lenders and mortgage structures are appropriate.

Step 2: Review the Borrower and Transaction

Before approaching a lender, it is useful to establish the key numbers.
These can include:

  • Property purchase price
  • Estimated property value
  • Amount required
  • Available deposit or equity
  • Business turnover
  • Profit
  • Existing borrowing
  • Rental income, where applicable
  • Expected monthly mortgage cost
  • Proposed repayment period
    Having these figures available makes it easier to assess whether the proposed transaction is realistic.

Step 3: Identify Suitable Lenders

Commercial mortgage lending is not a one-size-fits-all market.
Different lenders have different preferences for property types, sectors, loan sizes, trading histories and borrower profiles.
One lender may be comfortable with a particular industrial property while another may take a different view.
This is where a commercial mortgage broker can add value by helping identify lenders whose criteria are more closely aligned with the transaction.

Step 4: Submit the Application

Once the proposed lender and structure have been identified, the application can be submitted.
The lender may request financial information about the business, details of the property, information about the directors or borrowers and information explaining the purpose of the loan.
The lender uses this information to assess the overall risk of the transaction.

Step 5: Property Valuation

A commercial property valuation is generally an important part of the process.
The lender needs an independent assessment of the property’s value and suitability as security.
The valuation may consider comparable properties, location, condition, use, demand and other relevant factors.
A valuation lower than the agreed purchase price can affect the amount that the lender is willing to provide.
For example, suppose you agree to buy a property for £750,000 but the lender’s valuation comes back at £700,000. The lender may calculate its maximum loan using the lower figure, depending on its lending policy.
This could mean that you need to contribute additional funds to complete the purchase.

Step 6: Credit Assessment

The lender then considers the application in detail.
It may review:

  • Business accounts
  • Management information
  • Bank statements
  • Existing debts
  • Business performance
  • Personal financial information
  • Property valuation
  • Rental income
  • Lease information
  • Loan-to-value
  • Affordability
  • Proposed repayment structure
    The lender will use this information to determine whether the application meets its lending criteria.

Step 7: Mortgage Offer

If the lender is satisfied with the application, it can issue a formal mortgage offer subject to its conditions being met.
The offer should be reviewed carefully because it will set out important terms such as:

  • Loan amount
  • Interest rate
  • Term
  • Repayment basis
  • Fees
  • Conditions
  • Security requirements
  • Any personal guarantees
    The exact terms depend on the lender and transaction.

Step 8: Legal Work

Solicitors then work through the legal aspects of the purchase and mortgage.
The lender needs its legal charge properly registered against the property.
There may also be searches, property documentation, lease reviews and other legal checks depending on the transaction.

Step 9: Completion

Once the legal and lending conditions have been satisfied, the transaction can complete.
The lender releases the mortgage funds and the purchase or refinance proceeds.
For a purchase, ownership of the property then transfers according to the agreed transaction.
The mortgage remains secured against the property until it is repaid or refinanced.

How Are Commercial Mortgage Repayments Structured?

Commercial mortgages can be structured in different ways.

Capital and Interest

With a capital-and-interest mortgage, each payment includes an element of interest and repayment of the loan balance.
As the outstanding capital reduces, the amount of interest charged can also reduce over time, depending on the mortgage structure.
For example, if a business borrows £500,000 on a repayment basis, the outstanding balance should gradually fall as scheduled payments are made.

Interest-Only

An interest-only arrangement means the regular payments cover interest without reducing the underlying capital balance.
The original borrowing therefore remains outstanding unless capital repayments are made separately.
This means the borrower needs a credible strategy for repaying or refinancing the capital at the end of the agreed period.
Interest-only arrangements can therefore require careful planning.

Which Repayment Structure Is Better?

There is no universal answer.
A repayment mortgage may gradually reduce the debt and build equity.
An interest-only structure can result in lower regular payments but leaves the capital outstanding.
The appropriate structure depends on the business, cash flow, investment strategy, lender criteria and intended exit strategy.

How Long Does a Commercial Mortgage Last?

Commercial mortgage terms vary depending on the lender and transaction.
Longer-term commercial borrowing can be available over many years, with some current UK market guides describing terms of around 10 to 25 years for certain transactions.
However, the initial mortgage term and any fixed-rate period are not necessarily the same thing.
For example, a mortgage might have a long repayment term while the initial interest rate is fixed for a shorter period.
At the end of that period, the borrower may refinance, switch to another product or move onto the applicable variable rate, depending on the mortgage terms.

What Does a Commercial Mortgage Cost?

The total cost is more than just the interest rate.
Potential costs can include:

  • Arrangement or application fees
  • Valuation fees
  • Legal fees
  • Broker fees, where applicable
  • Lender administration fees
  • Property-related costs
  • Early repayment charges, depending on the agreement
  • Taxes and transaction costs
    Commercial mortgage rates are individually priced and can vary significantly depending on the borrower, property, LTV, lender and overall risk.
    Current market guides describe commercial mortgage pricing as commonly being linked to a reference rate or lender-specific pricing methodology, rather than there being one universal UK commercial mortgage rate.
    This is why comparing only headline interest rates can give an incomplete picture.
    A mortgage with a lower headline rate but higher arrangement fees may not necessarily be cheaper overall than an alternative structure.

Example: How a Commercial Mortgage Could Work

Consider a business looking to purchase an office for £600,000.
The business has £180,000 available as a deposit and wants to borrow £420,000.
The proposed mortgage would therefore represent:
£420,000 ÷ £600,000 × 100 = 70% LTV
The lender would then assess whether:

  • The property is suitable security
  • The business can support the proposed borrowing
  • The business’s financial performance is satisfactory
  • The proposed term is appropriate
  • The valuation supports the purchase price
  • The directors and business meet the lender’s criteria
    Suppose the valuation confirms a value of £600,000 and the lender is comfortable with 70% LTV.
    The application could potentially proceed towards an offer, subject to all other underwriting and legal requirements being satisfied.
    This example is purely illustrative. Actual borrowing limits, rates, fees and eligibility vary by lender and transaction.

What If the Valuation Is Lower Than the Purchase Price?

This is an important issue for commercial property buyers.
Imagine a company agrees to purchase a warehouse for £1 million. The lender instructs a valuation and the surveyor values the property at £900,000.
If the lender is willing to lend 70% LTV based on the valuation, the maximum mortgage could be calculated against £900,000 rather than the £1 million purchase price.
At 70% LTV, that would be:
£900,000 × 70% = £630,000
The buyer would therefore need to find the remaining funds from its own resources or consider whether the transaction can be renegotiated or structured differently.
This demonstrates why the property valuation can have a major impact on the final funding requirement.

Can a Commercial Mortgage Be Used to Refinance?

Yes. Commercial mortgages can be used to refinance existing commercial property finance, subject to lender criteria.
A business might consider refinancing because:

  • Its current mortgage is approaching maturity
  • It wants to restructure its borrowing
  • It wants a different repayment arrangement
  • The property value has changed
  • It wants to release equity
  • Its business circumstances have changed
    However, refinancing should be considered well before the existing facility reaches its end date.
    A lender will still need to assess the property and borrower’s circumstances, so leaving the process until the last minute can reduce the available options.

What Is the Difference Between a Commercial Mortgage and Bridging Finance?

Both products can be used to finance commercial property, but they serve different purposes.
A commercial mortgage is generally designed as longer-term property finance.
Bridging finance is usually short-term finance intended to provide funds quickly for a specific transaction or until another source of finance becomes available.
For example, an investor might use bridging finance to acquire a property that cannot immediately qualify for a standard commercial mortgage, with the intention of refinancing onto longer-term finance after completing necessary works.
The correct option depends on the property, timescale, exit strategy and financial circumstances.

What Is the Difference Between a Commercial Mortgage and a Business Loan?

A commercial mortgage is secured against property.
A conventional business loan may be secured or unsecured depending on the circumstances and lender.
The key distinction is the purpose and security structure.
If the objective is to purchase a business premises, a commercial mortgage may be a more appropriate form of long-term finance than an unsecured business loan.
HMRC also identifies commercial mortgages as a form of longer-term borrowing that companies can use when purchasing business premises.

What Security Is Required?

The commercial property itself is normally the primary security for the mortgage.
However, additional security or personal guarantees may sometimes be required depending on the lender, borrower and transaction.
A personal guarantee means an individual may have personal liability for some or all of the borrowing if the company fails to meet its obligations, subject to the exact guarantee terms.
The requirement for a guarantee varies between lenders and cases.
Borrowers should understand exactly what security is being offered before signing the mortgage documentation.

Are Commercial Mortgages Regulated?

The regulatory position can depend on the property, borrower, purpose and structure of the transaction.
Many mortgages secured against properties used wholly for commercial purposes sit outside the standard residential mortgage regulatory framework. However, mixed-use and residential elements can change the position.
This is one reason it is important to establish the exact nature and intended use of the property before assuming which rules apply.
For a specific transaction, borrowers should obtain appropriate professional advice on the legal and regulatory position.

What Can Make a Commercial Mortgage Application Stronger?

There is no guaranteed formula for approval, but preparation can make the process more efficient.

Have Your Numbers Ready

Understand how much you need to borrow, how much capital you can contribute and what monthly payments the business can realistically support.

Keep Financial Records Organised

Up-to-date accounts and management information can make it easier for lenders to understand the business.

Understand the Property

Know the purchase price, proposed use, lease position and any issues that could affect the property’s value or marketability.

Be Clear About the Purpose

Explain exactly why you are purchasing or refinancing the property and how the finance fits into your wider business or investment plans.

Plan Early

Commercial mortgage applications can involve valuations, underwriting and legal work. Starting early gives you more time to address issues that arise during the process.

Common Mistakes to Avoid

Focusing Only on the Interest Rate

The lowest headline rate does not automatically mean the lowest overall cost.
Consider fees, repayment terms, early repayment charges and other conditions.

Assuming Every Lender Has the Same Criteria

Commercial lenders can have very different appetites for particular property types, industries, loan sizes and borrower profiles.

Underestimating Additional Costs

Budget for valuation, legal and other transaction costs in addition to the deposit.

Waiting Until the Last Minute

If an existing commercial mortgage is approaching maturity, starting the refinance process late can create unnecessary pressure.

Assuming the Purchase Price Equals the Valuation

A lender’s valuation may differ from the agreed purchase price. The difference can affect how much finance is available.

How a Commercial Mortgage Broker Can Help

Commercial mortgage brokers can help businesses and investors navigate a market where lenders have different criteria and underwriting approaches.
Depending on the transaction, a broker may help with:

  • Understanding the finance requirement
  • Identifying potentially suitable lenders
  • Structuring the application
  • Preparing financial information
  • Comparing available terms
  • Managing communication with lenders
  • Coordinating the application process
  • Helping identify potential issues before submission
    The value of specialist advice is often greatest when the transaction does not fit a simple lending profile.
    If you are considering buying or refinancing commercial property, you can explore the commercial mortgage services available from The Commercial Mortgage Guy and discuss your requirements before deciding how to proceed.

Frequently Asked Questions

How does a commercial mortgage work in simple terms?

A commercial mortgage allows a business or property investor to borrow money against a commercial property. The lender takes security over the property, provides an agreed amount of finance and the borrower repays the mortgage according to the agreed terms.

How much can I borrow on a commercial mortgage?

The amount depends on factors such as the property’s value, LTV, business or rental income, existing debts, borrower profile and lender criteria. There is no single maximum amount that applies to every applicant.

How long does a commercial mortgage take?

The timescale varies considerably. It can depend on the lender, property, valuation, legal work, complexity of the borrower and whether additional information is required. Straightforward cases can move more quickly, while complex transactions can take considerably longer.

Can I get a commercial mortgage to buy premises for my business?

Yes. Buying owner-occupied business premises is one of the main purposes of commercial mortgage finance, subject to lender criteria and affordability.

Can a commercial mortgage be used for an investment property?

Yes. Commercial mortgages can be used to finance certain investment properties. In these cases, lenders may place significant emphasis on rental income, tenancy arrangements and the property’s investment characteristics.

Do commercial mortgages require a deposit?

Usually, the borrower will need to contribute some of the purchase price or property value. The amount depends on the lender, property, LTV and overall risk profile.

Can I get a commercial mortgage through a limited company?

Potentially, yes. Limited companies can be borrowers for commercial property finance, although the lender will assess the company and relevant individuals as part of the application.

What happens if a commercial property is worth less than expected?

A lower valuation can reduce the amount a lender is prepared to advance. The borrower may need to provide additional funds, renegotiate the purchase price or consider alternative finance options.

Is a commercial mortgage better than renting business premises?

Not necessarily. Buying can provide greater control and potentially build equity, but it also requires capital and creates responsibility for the property. Whether buying or renting makes sense depends on the business’s financial position, plans and property requirements.

Can I refinance a commercial mortgage?

Yes. Commercial property owners can potentially refinance an existing mortgage, subject to the lender’s criteria and the property’s value and financial circumstances.

Final Thoughts

A commercial mortgage is a long-term form of secured finance that can help businesses and investors purchase or refinance commercial property.
Although the basic concept is simple, the application process is more detailed than many borrowers initially expect. Lenders consider the property, borrower, affordability, LTV, business performance, rental income and the overall structure of the transaction.
The key is to approach the application with a clear understanding of how much you need, why you need it, how the borrowing will be repaid and what the property is worth.
Getting the right structure and lender can make a significant difference to the overall process.
If you are considering purchasing or refinancing commercial property, The Commercial Mortgage Guy can help you understand the finance options available for your circumstances.
Ready to discuss your commercial property finance requirements? Contact The Commercial Mortgage Guy to discuss your situation and explore the next steps.
Important: This article is provided for general information and does not constitute financial, legal or tax advice. Commercial mortgage availability, rates, fees, eligibility and lending criteria vary between lenders and individual circumstances.