Commercial Mortgage — eligibility, lenders, and how it works in the UK

In short

A commercial mortgage is a long-term loan secured against commercial property. It typically suits UK businesses buying their own trading premises (owner-occupier) and investors purchasing commercial or semi-commercial property to let. Loan-to-value commonly sits between 60% and 75%, with terms usually between 5 and 25 years. Underwriting focuses on affordability for owner-occupiers and rental cover for investors, alongside property quality and location. It is less suitable where deposit funds are very limited, the property type is unusual or trading performance is weak. All applications are subject to valuation, legal due diligence and lender underwriting, and rates are typically variable or fixed for shorter periods than residential mortgages.

How commercial mortgage works in plain English

Commercial mortgages fall into two main groups. Owner-occupier mortgages help businesses buy the premises they trade from — shops, offices, industrial units, warehouses, healthcare practices and similar. Investor mortgages — sometimes called commercial buy-to-let — help landlords purchase commercial or semi-commercial property to let to tenants. Lenders underwrite both routes differently: owner-occupiers are judged on the business's affordability for the mortgage payment, while investors are judged on rental cover (the ratio between rental income and mortgage cost).

Typical loan-to-value is 60-75%, leaving a 25-40% deposit to be funded by the borrower. Some specialist lenders go higher on strong cases. Terms range from 5 to 25 years, with capital-and-interest repayment usually amortised over 20-25 years (similar to a residential mortgage) but reviewed and re-priced at the end of each fixed or facility period. Rates are usually variable (linked to a base rate plus a margin) or fixed for shorter periods than residential mortgages — 2-5 year fixed periods are common. Repayment can be capital-and-interest or interest-only, depending on lender and structure.

Compared with bridging finance, commercial mortgages take longer to arrange (typically 6-12 weeks) but are significantly cheaper and longer-term. A common pattern is to bridge a fast purchase, complete any refurbishment, then refinance onto a long-term commercial mortgage once the property is income-producing or trading-ready.

Best-fit business profile

Owner-occupiers, landlords, property investors.

Core eligibility signals

Most UK lenders in this category look for a combination of the following. Individual lender criteria vary and final approval is subject to lender underwriting.

• Commercial property
• deposit/security
• affordability/rental cover
• Suitable commercial or semi-commercial property in an acceptable location.
• Sufficient deposit — typically 25-40% of purchase price.
• Owner-occupier: demonstrable business affordability for the new payment.
• Investor: rental cover (often 125-160%) against the proposed mortgage payment.
• Director and company credit profile broadly clean.

Common blockers

Where the following apply, lenders in this category may decline or deprioritise the application.

• Insufficient deposit
• weak accounts
• unsuitable property
• Insufficient deposit relative to the lender's LTV cap.
• Property type the lender does not support (heavy industrial, specialist use, leasehold issues).
• Weak rental cover or vacant investment property with no tenant in place.
• Trading business with declining accounts and limited affordability.

What underwriters typically look at

• Property type, location, condition and lender appetite for the asset class.
• Loan-to-value and quality of deposit funds.
• Affordability for owner-occupiers, rental cover for investors.
• Tenant strength and lease terms on investment cases.
• Trading accounts, where the borrower is the occupier.
• Director and shareholder credit history.

Documents typically requested

Expect to provide most of the following. Individual lenders may ask for more, depending on the size and structure of the facility.

• Property details — address, valuation, lease terms (for investments).
• Proof of deposit funds and source.
• Two to three years of filed accounts and current management accounts (owner-occupiers).
• Tenancy schedule and lease copies (investors).
• Business and personal bank statements.
• Director ID and proof of address.

Watch-outs — cost and regret risk

Honest cautions on this product. None of these are reasons to avoid it automatically — they are the questions to settle before signing. This is educational guidance, not financial advice.

• Fixed-rate periods are usually 2-5 years even though amortisation is 20-25 years — plan for the re-pricing date long before it arrives.
• Early repayment charges on a fixed period can be material; check whether the ERC is interest-only or includes a break cost.
• Vacant or partly-vacant investment property usually means lower LTV, higher rate or both — let the asset before applying where possible.
• Specialist asset types (petrol stations, care homes, leisure) need specialist lenders and slower underwriting — generic comparison tables can mislead.