One Unit, Two Credit Stories: How the Same Industrial Building Makes Two Different Loans

Picture a single mid-box unit on a multi-let estate. Steel portal frame, a decent eaves height, a roller shutter, a small two-storey office pod at the front, a shared yard. Now put two buyers in front of it. The first is an investor who will buy the unit with a tenant already in place and collect the rent. The second is the trading business currently occupying it, a light manufacturer that has decided it would rather own its home than rent it. Same building, same square footage, same postcode. Ask a lender what it will advance, and the two buyers get answers built on completely different logic.

That difference is the whole craft of arranging industrial finance. We are a finance arranger and introducer, not a lender, and the job is to work out which credit story a building tells most convincingly, then place it with the funder who reads that story most generously. If you are weighing a specific unit, start with a conversation about it at Industrial Property Finance.

Compliance note. Industrial Property Finance is a trading name of Lenzie Consulting Ltd. We arrange and place finance rather than lend it, and we are not authorised by the Financial Conduct Authority (FCA). The lending we arrange for limited companies, investors and business borrowers is unregulated commercial lending. Where a case carries a regulated element, for example lending to an individual secured on a property tied to their home, we refer it to an appropriately regulated firm. Every figure below is indicative market commentary for 2026, not an offer. The Bank of England base rate is 3.75 percent, held since the December 2025 cut.

The two questions a lender is really asking

Strip the paperwork away and a lender only ever asks one of two questions about an industrial unit. Either "who pays the rent, and how safe is it," or "how well does the business at the shutter trade." The building is the security in both cases. It is not the thing being underwritten. What gets underwritten is the income, and the two buyers bring two entirely different incomes to the table.

The bricks are the collateral. The income is the deal. Change who is borrowing and you change the income, and the loan changes with it.

The investor brings a rent roll. The owner-occupier brings a set of trading accounts. A lender that is comfortable with one is not automatically comfortable with the other, which is why the same unit can sail through on one basis and stall on the other. The big box versus multi-let comparison sits underneath this, because a single-let big box and a multi-let estate tell these two stories very differently.

Credit story one: the investor and the tenant

Take the investor first. They are buying the unit as a let asset, so the lender underwrites the income the tenant produces. The test is coverage: does the net rent, after a void allowance, management and the costs the landlord carries, cover the interest with a clear margin. Lenders commonly want net rent to cover interest somewhere in the region of 125 to 200 percent, depending on the lender and whether the rate is fixed or variable. The unexpired lease term, the tenant's covenant strength, and how quickly the unit would re-let if the tenant left all feed straight into that read.

On an investment purchase the leverage typically runs up to 65 to 70 percent loan-to-value, with rates starting from around 6 percent a year, asset dependent, and an arrangement fee usually of 1 to 2 percent. The deposit, the mirror image of the LTV, lands around 30 to 35 percent for an investor letting units. A strong tenant on a long lease pulls the margin down. A short unexpired term or a weak covenant pushes it up, or shrinks the loan.

The mechanics of that investment route live at the industrial investment mortgages satellite, and the criteria in the round, rates, deposits and what lenders actually check, are set out at industrial property finance rates, deposits and lender criteria. For the deeper detail on how a lender reads the money side of a let deal, the parent's commercial mortgages service is the place to go.

Here is the crucial part: the investor's own accounts are almost beside the point. A lender lending against a well-tenanted unit is lending against the tenant, not the buyer. A cash-rich investor with a shaky tenant is in a weaker position than a modest investor with a blue-chip lease. The income is the borrower, in effect, and the person who signs the loan is almost a formality by comparison.

Credit story two: the business at the shutter

Now the owner-occupier. The light manufacturer occupying the unit wants to buy the freehold and stop paying a landlord. There is no rent roll here, because the business is not letting the unit to anyone. It occupies it. So the lender has nothing to capitalise on the income side and turns instead to the accounts of the trading business: turnover, profit, and whether the cash the business generates comfortably services the debt.

This is a different animal. The lender is underwriting a company's ability to trade profitably and pay a mortgage out of operating cash, with the property as security behind it. Strong trading businesses can borrow up to 70 to 80 percent of the unit's value, with deposits from around 20 percent, rates from around 6 percent and the same 1 to 2 percent arrangement fee. The reason the leverage can run higher than the investor's is that the lender has two things standing behind the loan: a trading business paying from profit, and a building it occupies and needs.

That owner-occupier logic, and the sectors where it runs deepest, is laid out at owner occupier industrial mortgages, and the parent's owner-occupier mortgages service covers how a business presents its accounts to get the best read.

Same building, two very different files

The consequence is that the two buyers assemble almost opposite cases. The investor's file is about the lease: the tenancy agreement, the schedule of the rent, the covenant, the re-letting evidence. The owner-occupier's file is about the company: three years of accounts, management figures, the order book, and a serviceability calculation that shows profit covers the payment.

Present the wrong file for the story and the deal drags. An owner-occupier who talks only about the building and never opens the accounts is answering a question the lender did not ask. An investor who leans on their personal wealth rather than the strength of the tenant is doing the same. The unit type matters here too: a plain industrial unit reads cleanly on either basis, while a trade counter unit with a retail-facing frontage carries its own quirks a lender will want addressed whichever story is being told.

The plan decides the loan, and the plan is set at purchase

The uncomfortable truth for a buyer is that this choice is often locked in before the building earns anything. Buy the unit to let it and you have chosen the income test for the whole hold. Buy it to occupy it and you have chosen the accounts test. A unit bought as an investment and the same unit bought as an owner-occupied home are the same purchase on the day of exchange and two different financing lives afterwards.

That is why the finance question belongs inside the buying decision rather than after it. An investor who knows their tenant is thin should expect the income test to bite and structure accordingly. An owner-occupier whose accounts have had a soft year should know the serviceability calculation is where the deal is won or lost, and time the purchase around it. The building was never the variable. The plan for its income was.

Where the arrangement job earns its keep

Two buyers, two credit stories, one building. The interest rate barely entered either argument, which is exactly the point most borrowers miss. They arrive focused on price when the decision that moves the most money is which income a lender agrees to count, and how much of it. Get the story read correctly at the outset and the loan is sized against the strongest defensible version of the asset. Get it wrong and you leave usable borrowing on the table before anyone quotes a rate.

Reading a unit both ways, working out which story it tells most convincingly, and placing it with the lender who reads that story most generously is the arrangement job. If you are looking at an industrial unit as either an investment or a home for your business, that is a conversation for the industrial finance desk before you commit to how you hold it.

Written by Matt Lenzie. General information on UK property finance, not regulated advice.