Back to blog
8 min readCommercial Mortgages

Commercial Investment Property Finance: A UK Guide

Commercial investment property finance funds buildings let to business tenants, assessed on rental cover. Here's how it works, what lenders want, and how to fund it.

What is commercial investment property finance?

Commercial investment property finance is a mortgage used to buy or refinance commercial property that is let to third-party business tenants, where the rent covers the loan. Unlike an owner-occupied deal, you do not trade from the building yourself: you are the landlord, and your return comes from the rent. Because of this, lenders assess these deals primarily on the strength and reliability of the rental income rather than on a trading business.

How do lenders assess investment property finance?

The central test is whether the rent comfortably covers the mortgage. Lenders apply a debt service coverage ratio (DSCR), typically wanting income of at least 1.25 to 1.4 times the loan payments, as explained in our DSCR guide. Beyond the raw numbers, they examine:

  • Lease length: a long unexpired lease term is far more attractive than a short one
  • Tenant strength: the covenant, or financial reliability, of the tenant paying the rent
  • Void risk: how easy the property would be to re-let if the tenant left
  • Property type and location: standard, in-demand assets in strong locations
  • Any break clauses that could shorten the effective income

What LTV and rates apply?

Commercial investment mortgages typically reach around 65 to 75 percent LTV, depending on the tenant and lease, meaning a deposit of 25 to 35 percent. Rates broadly follow the wider market, commonly 6 to 9 percent, as set out in our rates and fees guide. A strong tenant on a long lease supports a higher LTV and a keener rate; a short lease or weaker tenant pushes both the other way. The contrast with owner-occupied lending is covered in our comparison guide.

Why invest in commercial property?

  • Higher yields: commercial yields are often higher than residential
  • Longer leases: commercial tenants often sign multi-year leases, giving income stability
  • Full repairing leases: tenants frequently cover repairs and insurance, reducing landlord costs
  • Portfolio diversification: commercial adds a different risk profile to a residential portfolio

The trade-offs are longer voids when a tenant does leave, more specialist management, and greater sensitivity to the economy and sector demand. Different asset types behave differently, as explored in our guide to offices, warehouses and industrial units.

Structuring your investment

Many investors hold commercial property in a limited company or special purpose vehicle (SPV), for tax planning and to ringfence risk. Lenders will assess the entity, its shareholders, and directors, and usually require personal guarantees. Getting the structure right at the outset avoids costly changes later, so take advice on ownership before you buy.

Building a commercial portfolio

Investors often start with a single unit and grow into a portfolio spanning offices, retail, industrial, and semi-commercial assets. A mix of sectors and tenants smooths income, because a void in one property is offset by rent from others. Semi-commercial units, such as a shop with a flat above, can be a useful entry point because the residential element adds lettability, as covered in our semi-commercial guide.

Funding your investment with Assesr

Investment deals hinge on presenting the rent, lease, and tenant clearly to lenders comfortable with your asset. Assesr builds a lender-ready credit paper in around 60 seconds and matches your investment commercial mortgage to specialist lenders whose criteria fit, at a quarter of the typical broker fee. You pay the 0.5% Assesr Fee on drawdown, nothing until your deal completes.

Frequently asked questions

How is commercial investment property finance assessed?

Primarily on rental income. Lenders apply a debt service coverage ratio to check the rent covers the loan with a margin, and they scrutinise the lease length, tenant strength, and void risk of the property.

What yield do commercial investment properties offer?

Yields vary widely by sector and location, and commercial yields are often higher than residential. The key is net yield after costs and voids, and whether it supports the loan under the lender's coverage test.

Can I buy commercial investment property through a company?

Yes. Many investors hold commercial property in a limited company or SPV for tax and structuring reasons. Lenders will assess the entity and may require personal guarantees from directors.

A

Assesr

Development finance marketplace

Get your development finance sorted with Assesr

Assesr matches property developers with the right lenders in hours, not weeks. Submit your deal and get lender-ready credit papers, competitive quotes, and expert support — all in one place.