How is rental income assessed for a commercial investment mortgage?

Lenders assess the actual or projected rental income from the property and apply an interest coverage ratio (ICR) test to determine whether the rent covers the mortgage interest by a sufficient margin. Lease terms, tenant covenant strength and vacancy risk are also considered.

What deposit is needed for a commercial investment mortgage?

Commercial investment mortgages typically require a deposit of 25% to 40% of the purchase price or valuation. The exact amount depends on the property type, tenant, lease and lender appetite. Vacant or unusual properties may require a larger deposit.

Does landlord experience matter for a commercial investment mortgage?

Many commercial mortgage lenders prefer experienced property investors or landlords. Those new to commercial property investment may face a smaller range of lender options, though some lenders will consider first-time commercial investors with a strong overall financial profile.

Can I use a limited company to purchase a commercial investment property?

Yes. Many commercial property investors purchase through limited companies or special purpose vehicles (SPVs). Lenders who accept limited company applications will typically require director personal guarantees alongside the property security.

Commercial Investment Mortgages UK

What Is a Commercial Investment Mortgage?

A commercial investment mortgage is a loan secured against commercial property purchased to let to business tenants, rather than for the buyer's own trading use. The lender's primary concern is the income the property generates — or is expected to generate — from commercial tenants, together with the quality and security of those tenants.

Commercial investment mortgages are used by experienced property investors, portfolio landlords expanding into commercial property, and businesses looking to invest in commercial assets alongside residential holdings.

How Lenders Assess Commercial Investment Mortgages

Unlike owner-occupied commercial mortgages, where the assessment is focused on the borrowing business's trading income, commercial investment mortgages are assessed primarily on the property's rental income and the strength of the tenant covenant.

Rental Income and Interest Coverage

Lenders apply an interest coverage ratio (ICR) test, requiring the annual rental income to exceed the annual mortgage interest by a defined margin — typically 125% to 150% depending on the lender. This provides a buffer against rental voids or rate increases.

Tenant Covenant Strength

The financial strength and creditworthiness of the commercial tenant — the tenant covenant — is a significant factor in lender assessment. A national retailer, government-backed occupier or long-established business tends to attract stronger lender appetite than a new or untested tenant. Vacant properties or those with short leases can make financing more challenging.

Lease Terms and Unexpired Lease Length

Lenders consider the length of the remaining lease, the lease structure (FRI, internal repairing or otherwise), rent review provisions and break clauses. Longer leases with strong tenants and regular rent reviews are generally viewed more favourably.

Property Type and Location

Standard commercial property types — offices, retail units, industrial units and warehouses — tend to attract a wider range of lenders. More specialist or unusual properties may attract fewer lenders or require specialist funding routes.

Deposit and Loan-to-Value

Deposits typically range from 25% to 40% of the purchase price or valuation. Vacant properties, those with short leases or those in secondary locations may require higher deposits.

What Lenders Typically Consider

✓ Rental income and interest coverage ratio
✓ Tenant covenant — financial strength and track record
✓ Unexpired lease term and lease structure
✓ Property type, condition and location
✓ Yield and property valuation
✓ Deposit and loan-to-value
✓ Borrower's investment experience and financial profile
✓ Whether the property is let, partially let or vacant

Property Types Covered

Retail Units

High street, out-of-town retail and investment shops let to commercial tenants.

Office Buildings

Multi-tenanted offices, serviced office buildings and single-let office premises.

Industrial & Warehousing

Let light industrial units, warehouses and trade counter units.

Mixed-Use Property

Properties with both commercial and residential lettings — see semi-commercial mortgages.

Landlord Experience and Limited Company Purchases

Many commercial mortgage lenders prefer applicants with existing property investment experience. Those new to commercial property may face a narrower range of options, though some lenders will consider first-time commercial investors with a strong financial profile.

Purchasing through a limited company or SPV is common for commercial property investment. Lenders accepting limited company applications will typically require director personal guarantees alongside the property security.

How NexGen Finance Can Help

NexGen Finance supports commercial property investment enquiries. We can help review the enquiry, explain possible finance routes and connect clients with appropriate lenders or brokers depending on the property type, tenant and the client's circumstances.

We do not provide commercial mortgage advice directly. Where regulated advice is required, enquiries are referred to authorised authorised commercial finance broker partners.

NexGen Finance is not a lender and does not provide regulated financial advice. Suitable enquiries may be referred to commercial finance broker partners. Funding is subject to status, affordability, lender criteria and approval. Where regulated mortgage or protection advice is required, this is handled by authorised authorised commercial finance broker partners or brokers. Funding is subject to status, affordability, lender criteria and approval. Commercial finance enquiries may be referred to appropriate brokers, lenders or advisers depending on the type of enquiry and the client's circumstances.

Discuss Your Enquiry All Commercial Mortgages Bridging Loans

Frequently Asked Questions

What is a commercial investment mortgage?

A commercial investment mortgage is a loan secured against commercial property purchased to let to business tenants. The lender assesses rental income, tenant covenant and lease terms rather than the buyer's own trading performance.

How is rental income assessed?

Lenders apply an interest coverage ratio (ICR) test, requiring the annual rent to exceed the annual mortgage interest by a defined margin — typically 125% to 150%. Lease terms, tenant quality and vacancy risk are also considered.

What deposit do I need?

Deposits typically range from 25% to 40%. Vacant or unusual properties may require a higher deposit. Stronger tenants and longer leases can support higher loan-to-value ratios.

Does my landlord experience matter?

Many lenders prefer experienced property investors. First-time commercial investors may face a narrower range of options but can still access commercial investment mortgage finance with the right profile.

Can I buy through a limited company?

Yes. Many commercial property investors purchase through limited companies or SPVs. Lenders will typically require director personal guarantees alongside the property security.

Commercial Investment Mortgages