What is a commercial mortgage and how does it work?
26th March 2026
By Simon Carr
A commercial mortgage is a specific type of secured loan designed to finance the purchase or refinance of commercial (non-residential) property used for business purposes or investment in the UK. Unlike standard residential mortgages, commercial lending is typically assessed based on the financial health of the borrowing entity (a company or partnership) and the viability of the business occupying the premises, rather than solely the borrower’s personal income.
TL;DR: A commercial mortgage is a long-term loan secured against business property, used for buying premises or investment. These loans typically involve larger deposits and different regulatory standards than residential mortgages, and eligibility depends heavily on the business’s financial stability and cash flow.
What is a commercial mortgage and how does it work?
In the UK, a commercial mortgage is a specialised financial instrument crucial for businesses seeking to own their operating premises or for investors purchasing commercial property to rent out. Understanding how this product works requires acknowledging the key distinctions between commercial and residential lending markets.
Defining Commercial Mortgages
Commercial mortgages provide capital for the acquisition, renovation, or refinance of property that generates income or serves as operational premises for a business. Examples of eligible commercial properties include offices, retail shops, warehouses, factories, pubs, hotels, and agricultural land.
The core mechanism is similar to a residential mortgage: a lender provides a large sum of money, secured against the property itself. The borrower agrees to repay the capital plus interest over a fixed term, typically between 5 and 25 years.
Commercial mortgages are usually sought by:
- Owner-Occupiers: Businesses (Ltd companies, sole traders, or partnerships) buying premises from which they will operate.
- Commercial Investors: Individuals or companies purchasing property specifically to lease to third-party tenants, generating rental income.
Key Differences from Residential Mortgages
While the term ‘mortgage’ is common, commercial loans operate under different parameters than loans secured against your main home:
Loan-to-Value (LTV) Ratios
Commercial LTVs are typically lower than residential ones. Where a residential buyer might secure 90% or 95% LTV, commercial lenders often require a significantly larger deposit. LTVs for commercial property generally range between 50% and 75%, meaning the borrower must contribute 25% to 50% of the purchase price upfront.
Interest Rates and Fees
Commercial mortgages generally carry higher interest rates than residential loans because the risks associated with business viability and the fluctuating commercial property market are often greater. Fees, including arrangement fees and legal costs, also tend to be higher and more complex.
Regulation
The biggest difference is regulatory oversight. Residential mortgages are heavily regulated by the Financial Conduct Authority (FCA), offering strong consumer protections. Commercial mortgages, however, are largely unregulated unless they fall into specific categories, such as being secured against the borrower’s home (often referred to as a Regulated Mortgage Contract).
It is important that businesses fully understand their responsibilities and the risks involved when taking out commercial finance. You can find independent guidance on business finance options through government services, such as the support pages provided by GOV.UK on financial help for businesses.
Understanding Commercial Mortgage Application and Assessment
The application process for a commercial mortgage is generally more detailed and rigorous than for a residential loan, focusing heavily on business performance and future projections.
Required Documentation
Lenders will need comprehensive documentation to assess both the borrower’s ability to repay and the quality of the commercial property being purchased. This typically includes:
- Detailed business plans and financial projections.
- Several years of audited company accounts.
- Evidence of existing business debt and liabilities.
- Personal financial information for the directors or partners, including asset statements and personal credit history.
Lenders scrutinise the stability and profitability of the business because the ability to service the debt is directly tied to the business’s cash flow. Before applying, it is beneficial to understand your standing. Get your free credit search here. It’s free for 30 days and costs £14.99 per month thereafter if you don’t cancel it. You can cancel at anytime. (Ad)
Valuation and Due Diligence
The lender will commission a specialist commercial property valuation. This valuation not only assesses the current market worth but also often considers the future income potential (especially for investment properties) and the property’s overall suitability for the proposed use.
Commercial Mortgage Interest Rates and Repayment Structures
Commercial mortgage rates can be fixed (staying the same for a set period) or variable (fluctuating with the Bank of England Base Rate or a specific lender’s standard variable rate).
Repayment Types
Lenders offer different structures tailored to commercial needs:
- Capital and Interest (Repayment): The most common method, where the borrower pays down both the loan principal and the interest throughout the term.
- Interest-Only: The borrower pays only the interest monthly. The original capital amount is repaid in a single lump sum (a “balloon payment”) at the end of the term, often through the sale of the property or refinancing. This can reduce monthly costs but requires a clear exit strategy.
- Part-and-Part: A combination where a portion of the loan is repaid monthly, and the remaining capital is settled via a balloon payment.
Compliance and Key Risks of Commercial Lending
While a commercial mortgage can be a powerful tool for business expansion and asset building, borrowers must be aware of the associated risks. These risks tend to be amplified compared to residential lending due to the less stringent regulatory protections.
Secured Lending Risk
Since the mortgage is secured against the commercial property (and sometimes other business assets or personal guarantees), failure to meet repayment obligations has serious consequences.
Your property may be at risk if repayments are not made. If a business defaults on its commercial mortgage, the lender may initiate legal action, increasing interest rates, applying additional charges, or ultimately seeking repossession of the property to recover the outstanding debt.
Market Risk
The value of commercial property can fluctuate significantly based on economic cycles and industry demand. If the market falls, the business may find itself in a negative equity situation, complicating any future attempts to sell or refinance.
Prepayment Penalties
Many commercial mortgages include strict early repayment charges (ERCs). If a business sells the property or wishes to refinance the loan early, these penalties can be substantial, making it crucial to review the terms carefully before signing.
People also asked
How much deposit is typically required for a commercial mortgage?
Lenders usually require a substantial deposit for a commercial mortgage, often between 25% and 50% of the property’s purchase price. The exact percentage depends on the type of property, the financial strength of the business, and whether the borrower is an owner-occupier or an investor.
Are commercial mortgages regulated by the FCA?
In general, standard commercial mortgages are not regulated by the Financial Conduct Authority (FCA). Regulation only applies if the loan falls under a specific definition, such as a Regulated Mortgage Contract, which typically occurs if the loan is secured against the borrower’s personal residence.
What factors affect the commercial mortgage interest rate I am offered?
Interest rates are influenced by the financial health and trading history of the business, the LTV ratio, the loan term, the specific type of property (e.g., standard office versus specialist factory), and the overall strength of the UK economy and lending market at the time of application.
Can I use a commercial mortgage for a mixed-use property?
Yes, commercial mortgages are commonly used for mixed-use properties (those combining residential and commercial elements, such as a shop with flats above). However, lending criteria can be complex, and the lender will assess the residential and commercial proportions separately to determine the appropriate financing product and terms.
What is an acceptable loan term for a commercial mortgage?
Commercial mortgage terms are typically shorter than residential loans, ranging from five years up to 25 years. Shorter terms mean higher monthly repayments but less overall interest paid, while longer terms reduce monthly pressure but increase the total cost of borrowing.
Securing Your Commercial Future
Obtaining a commercial mortgage is a strategic decision that commits a business to a long-term liability. Due to the complexity and lack of broad regulatory oversight, professional guidance is highly recommended. Working with a specialist commercial finance broker can help businesses navigate the diverse range of products available, assess their financial viability rigorously, and secure terms appropriate for their specific operational and investment goals.
Promise Money is a broker not a lender. Therefore we offer lenders representing the whole of market for mortgages, secured loans, bridging finance, commercial mortgages and development finance. These loans are secured on property and subject to the borrowers status. We may receive commissions that will vary depending on the lender, product, or other permissable factors. The nature of any commission will be confirmed to you before you proceed.
More than 50% of borrowers receive offers better than our representative examples
The %APR rate you will be offered is dependent on your personal circumstances.
Mortgages and Remortgages
Representative example
Borrow £270,000 over 300 months at 7.1% APRC representative at a fixed rate of 4.79% for 60 months at £1,539.39 per month and thereafter 240 instalments of £2050.55 at 8.49% or the lender’s current variable rate at the time. The total charge for credit is £317,807.66 which includes £2,500 advice / processing fees and £125 application fee. Total repayable £587,807.66
Secured / Second Charge Loans
Representative example
Borrow £62,000 over 180 months at 9.9% APRC representative at a fixed rate of 7.85% for 60 months at £622.09 per month and thereafter 120 instalments of £667.54 at 9.49% or the lender’s current variable rate at the time. The total charge for credit is £55,730.20 which includes £2,660 advice / processing fees and £125 application fee. Total repayable £117,730.20
Unsecured Loans
Representative example
Annual Interest Rate (fixed) is 49.7% p.a. with a Representative 49.7% APR, based on borrowing £5,000 and repaying this over 36 monthly repayments. Monthly repayment is £243.57 with a total amount repayable of £8,768.52 which includes the total interest repayable of £3,768.52.
THINK CAREFULLY BEFORE SECURING OTHER DEBTS AGAINST YOUR HOME
REPAYING YOUR DEBTS OVER A LONGER PERIOD CAN REDUCE YOUR PAYMENTS BUT COULD INCREASE THE TOTAL INTEREST YOU PAY. YOUR HOME MAY BE REPOSSESSED IF YOU DO NOT KEEP UP REPAYMENTS ON A MORTGAGE OR ANY OTHER DEBT SECURED ON IT.
Promise Money is a trading style of Promise Solutions Ltd – Company number 04822774Promise Solutions, Fullard House, Neachells Lane, Wolverhampton, WV11 3QG
Authorised and regulated by the Financial Conduct Authority – Number 681423The Financial Conduct Authority does not regulate some forms of commercial / buy-to-let mortgages
Website www.promisemoney.co.uk


