Business loan or commercial mortgage: financing your business premises
By Clara Kowalski · Updated 2026-07-02
Buying or fitting out premises for your business raises a genuine fork in the road: a commercial mortgage secured against the property, or a broader business loan that funds the purchase alongside other needs. The right choice depends mostly on what you are financing and how established your business is.
What a commercial mortgage is built for
A commercial mortgage is a loan secured specifically against a commercial property, such as an office, warehouse, retail space, or industrial site. Because the loan is secured against real property, it typically comes with a longer term and a lower interest rate than an unsecured business loan, similar in structure to a residential mortgage but assessed against commercial lending criteria.
Lenders generally want to see an established trading history, consistent revenue, and sometimes a fit between the business and the property, such as an owner-occupier buying the building their business already operates from.
What a general business loan is built for
A business loan is more flexible in purpose, covering things like fit-out costs, equipment, working capital, or a mix of purposes alongside a property purchase. It is often unsecured or secured against business assets rather than the property itself, which usually means a shorter term and a higher rate than a dedicated commercial mortgage, reflecting the lender’s higher risk without property security.

Comparing the two paths
| Factor | Commercial mortgage | Business loan |
|---|---|---|
| Security | The commercial property itself | Often unsecured or against business assets |
| Typical term | Longer, similar to a residential mortgage | Usually shorter |
| Typical rate | Lower, reflecting property security | Higher, reflecting lender risk |
| Best suited to | Buying premises you plan to hold long term | Fit-out, equipment, working capital, or newer businesses |
| Trading history needed | Usually an established history preferred | More flexible, though still assessed |
When a commercial mortgage makes more sense
If you are buying premises your business intends to occupy for years, and you have a reasonably established trading history, a commercial mortgage usually works out cheaper over time because of the lower rate and longer term. It also builds an asset on the business’s balance sheet rather than an ongoing rent commitment. If your business needs to settle on new premises before your existing site has sold, our guide on bridging finance explains how that gap gets financed.
When a business loan makes more sense
If you are leasing premises and just need funds for fit-out, equipment, or working capital, a business loan is often the simpler and faster path, since it does not require the same property-specific assessment. It also suits newer businesses that do not yet have the trading history a commercial mortgage lender typically wants to see.
Combining both
It is common for a business to use a commercial mortgage for the property purchase and a separate, smaller business loan for fit-out or equipment, rather than trying to fund everything through one facility. A broker who works across both commercial mortgage and business lending panels can structure this so each part is financed on its most suitable terms rather than forcing one loan to cover everything.
What lenders actually assess
Commercial lenders look closely at the business’s financial statements, typically the last two years, along with cash flow, existing debts, and sometimes the specific industry the business operates in, since some sectors are viewed as higher risk than others regardless of the individual business’s performance. For a purchase where the business will occupy the property itself, lenders often also factor in whether the rent the business would otherwise pay could comfortably cover the new loan repayments, since that comparison gives a useful sense of affordability.
Why the property type matters
Not all commercial property is assessed the same way. A standard office or retail space in a well-established area is generally viewed as lower risk than a specialised property, such as a purpose-built facility that would be harder to re-tenant or sell if the business changed direction. This can affect both the deposit required and the interest rate offered, so it is worth discussing the specific property type with a broker early rather than assuming all commercial premises are treated equally.
If you are weighing up premises finance, comparing commercial finance specialists locally is a practical next step, and our scoring method explains how we assess them. You can also browse the full directory if you want to see the wider range of options first.
FAQ
- What is the main difference between a commercial mortgage and a business loan?
- A commercial mortgage is secured specifically against the property you are buying, usually with a longer term and lower rate. A general business loan can fund a wider range of purposes but is often shorter-term and priced with the business's overall risk in mind.
- Do I need a large deposit for a commercial mortgage?
- Typically yes, often more than a residential loan, since lenders view commercial property as higher risk. Deposit requirements vary by property type and lender.
- Can I use a commercial mortgage to buy premises for a business I am just starting?
- It is harder without an established trading history, since lenders usually want to see consistent revenue and cash flow. Some lenders offer options for newer businesses with strong personal financials or additional security.
- Is the interest on a commercial mortgage tax deductible?
- Interest on a loan for a genuine business purpose is often deductible, but this depends on your structure and circumstances. Confirm with an accountant rather than assuming.