Senior Investment Term Loans 2026

Every stabilisation deal is really a journey with a destination, and the destination is a senior investment term loan, which is in plain terms a commercial investment mortgage on a finished, income-producing asset. It belongs to the wider family of commercial investment mortgages, the long-term senior products that fund standing income-producing property. The bridge, the lease-up facility, the development exit, the cash-out refinance: all of them are short-dated debt that carries a newly built or repositioned asset across the gap between practical completion and a settled, stabilised income. Bridging loans are usually the route in, the short money that buys time. Once the asset reaches a settled income, that short-dated debt has done its job, and the asset refinances onto long-term senior debt sized on what it now earns. That long-term debt is the senior investment term loan, the commercial mortgage the whole deal has been aiming at.

It matters to understand the commercial mortgage first, even though it comes last in time, because it sets the target for everything before it. A lender writing a stabilisation bridge is underwriting toward a refinance, and the refinance it has in mind is a senior investment term loan at a sensible loan to value on a stabilised income. If the commercial investment mortgage will not size, the stabilisation debt should not be written. So the senior investment term loans that sit at the end of the journey quietly shape the deals at the start of it.

This article walks through what one is in 2026: the benefits it brings, how this commercial investment mortgage is sized against net rental income and interest cover, where loan to value sits, the lending criteria a lender runs on occupancy, the rent roll, the covenant, the lease and the yield, how it is priced, and how prime yields by sector turn a stabilised income into the value the mortgage is secured against. It also sets out the range of products and the lender camps that fund these investment mortgages, and the application an investor or landlord goes through. We arrange, place and structure this debt; we do not lend it. The figures here are indicative market commentary for UK commercial investment property finance, illustrative and never an offer, and we are happy to advise on the options.

What a senior investment term loan is

A senior investment term loan is a commercial investment mortgage: long-term senior debt secured against a stabilised, income-producing commercial property held by the borrower’s business. Senior means it sits first in the capital stack, ahead of any mezzanine, preferred equity or developer equity, with a first legal charge over the asset. Investment means the property is held for the income it produces rather than for sale or development. Term means the debt is written to sit on the asset for years, not months, while the rental income services it. It is, in every practical sense, the commercial mortgage that a trading business or property company carries on a building it intends to keep.

That is the whole character of commercial investment mortgages, and it is the opposite of the debt they replace. A stabilisation bridge or a lease-up facility is sized against a path to an income that does not yet exist, priced for the risks and the duration of that ramp. The senior investment term loan is the patient money at the end: it is priced on income that already exists, proven through a trading period, and on a covenant a lender can actually read. That is why a commercial mortgage of this kind is cheaper than everything before it, and why getting to it is the point of the whole stabilisation exercise. The benefits of a senior investment term loan follow from that character: a lower cost of debt than the bridge it replaces, a long tenor that matches the asset, and payments an investor or landlord can plan around because the income is settled rather than projected.

In practice the mortgage funds the holding of a standing asset across the major commercial sectors: an industrial or logistics warehouse let on a long lease, a build-to-rent block at stabilised occupancy, a student scheme that has let through a full academic cycle, a self-storage store filled to a mature level, an office or a retail warehouse with settled tenants. Commercial mortgages of this type sit on every one of these asset classes, so it helps to think of them as a single product class with a common job rather than as one narrow loan. The income basis differs by sector, but the loan does the same job in each: it is long senior debt sized on the stabilised rent roll. It is also the refinance exit named in most stabilisation deals. When we arrange a bridge or a lease-up facility, the exit we underwrite toward is usually a refinance onto a senior investment term loan once the asset stabilises, or a sale of the business’s interest in it.

LTV indicatively 65 to 75 percent of investment value

Loan to value on a senior investment term loan, this commercial investment mortgage, sits indicatively in the 65 to 75 percent band of investment value, with loan sizes from around 500,000 and no fixed ceiling on a strong income. That band is fairly typical of commercial investment mortgages on stabilised stock, and two things in that sentence deserve unpacking: the band, and the word investment value.

Investment value is not build cost and it is not day-one value at practical completion. It is the value of the stabilised asset, the value once the property reaches its mature, fully-let income and that income is capitalised at a yield. This matters because a stabilisation asset is worth far more stabilised than it is on the day it completes, when the income is often low or nil. The mortgage is sized against the stabilised investment value, which is precisely why the asset has to reach stabilisation before the term loan can take over from the bridge. Until the income is there, the value the 65 to 75 percent is a percentage of does not exist yet.

Where a deal sits within the band is set by the quality of the income and the asset. A prime, well-let asset in a deep, liquid sector, with a strong covenant on a long lease, sits at the keener, higher-LTV end. A more specialist asset, a shorter lease, a weaker covenant or a thinner sector pulls the loan to value down and increases the risks the lender is pricing. The lender is judging how much debt the income can safely carry and how liquid the asset would be if it ever had to sell, then setting the advance accordingly. The same logic flows back into the stabilisation debt: a bridge written toward a 70 percent term-loan exit looks very different from one written toward a 60 percent exit.

Sized so net rental income covers debt service with headroom

Loan to value tells you how much debt the value can carry. Interest cover tells you how much debt the income can carry, and on a commercial investment mortgage the income test is usually the binding one. A senior investment term loan is sized so that the net rental income, the rent collected after the costs of running the property, covers the mortgage payments with headroom. That headroom is the interest cover ratio, sometimes expressed as a debt service cover ratio where the loan amortises.

The principle is straightforward. A lender does not want the rent to only just meet the interest and any capital repayment, because that leaves no cushion for a void, a rent reduction, a cost increase or a rate movement. So it sizes the mortgage so the income clears the debt service comfortably, with a margin above it. The size of that required headroom moves with the risks in the income: a long lease to a strong covenant needs less than a multi-let asset with rolling lease events and a softer tenant base. On variable rate debt the lender also stresses the interest cover at a rate higher than today’s, to check the income still covers the debt if rates rise, which matters with Bank Rate at 3.75 percent, held since the December 2025 cut, and the variable cost of debt set as a margin over SONIA.

The result is that two assets with the same investment value can support very different investment mortgages. The one with secure, long-dated, well-covenanted income passes the interest cover test with more debt and reaps the full benefits of cheaper senior term money; the one with shorter or softer income passes with less. That is why proving the income through a trading period, rather than projecting it, is what unlocks the cheaper term debt. The bridge is sized on the path to income; the commercial mortgage is sized on the income’s coverage of debt service, and that coverage has to be real.

The term loan is priced on income that already exists and a covenant a lender can read, which is exactly why it is cheaper than the debt that came before it.

Key tests: occupancy, the rent roll, the covenant, the lease and yield

If interest cover is the headline test, it rests on five things a lender reads in detail before it sizes a commercial investment mortgage. These are the lending criteria that decide whether the income is as good as it looks, and they shape the whole application a borrower makes. The same criteria apply whether the deal is a first-time refinance or a move by existing borrowers off an existing facility onto cheaper term debt.

Occupancy comes first, because it is the proof that the asset has actually stabilised. A lender wants to see the property let to a settled, mature level and held there through a trading period, not a projection. The mature benchmark differs by sector: a build-to-rent block stabilises above 95 percent occupancy after ramping to around 80 percent within twelve months of going live, on CBRE’s read of the lease-up curve; a self-storage store reaches a mature level after a fill-up of roughly three years, with mature stores running around 79 percent occupancy on the Cushman and Wakefield and SSA UK data; a student scheme has to let through a single concentrated September intake.

The rent roll is the income itself, line by line: who pays, how much, on what terms, with what arrears history. A lender reads it to test that the net rental income is real, collected and durable, not headline or aspirational. Income spread across many tenants is more resilient than income leaning heavily on one.

The tenant or operator covenant is the strength of whoever pays the rent or runs the operation, and on an owner-occupied asset it is the borrower’s own business. A long lease to a financially strong tenant is the keenest covenant a lender can have, because the income is contracted and the payer is good for it. On operational assets, a self-storage store, a student scheme, a roadside or leisure asset, the operator covenant matters as much as the lease, because the income depends on the operator business letting and running the asset well. A strong covenant earns a keener mortgage and more debt; a weak or unproven one is priced harder because the risks are higher.

The lease is the contract behind the income: its unexpired term, the rent review pattern, indexation and break clauses. A long unexpired lease with upward reviews to a strong tenant gives contracted, growing income and supports a long term loan; short unexpired terms or imminent breaks introduce re-letting risk that pulls the advance down and the margin up.

Yield is the capitalisation rate that turns the stabilised income into value, both an input to loan sizing and a read on liquidity, which is why it has its own section.

How prime yields by sector turn stabilised income into value

Value is income divided by yield. A stabilised asset is worth its net rental income capitalised at the prime yield for its sector, so the yield does double duty on a commercial investment mortgage: it sets the investment value the 65 to 75 percent loan to value is a percentage of, and it tells the lender how liquid the exit would be if the asset ever had to sell. This is why prime yields by sector matter so much to the sizing of commercial investment mortgages. A tighter prime yield means a higher stabilised value and a deeper pool of capital chasing the asset, both of which help the mortgage size.

Prime yields differ sharply by sector, and the named research houses publish them. On Knight Frank’s Prime Yield Guide for January 2026, prime distribution warehouses sit at about 5.00 percent net initial yield on twenty-year income, easing to about 5.25 percent on fifteen-year income, broadly unchanged over the year, with Savills cross-checking prime industrial at about 5.25 percent; secondary industrial is about 6.00 percent. Prime retail warehouse parks are about 5.25 to 5.50 percent and prime foodstores about 5.75 percent on the same Knight Frank guide.

In the living sectors the yields are keener still, which capitalises a given income into a higher value. Knight Frank puts prime Greater London build-to-rent multifamily at about 4.25 percent net initial yield, with Tier 1 regional cities about 4.50 percent, on its November 2025 guide. Prime purpose-built student accommodation runs about 4.25 to 4.50 percent direct-let in prime London and about 5.25 to 5.50 percent prime regional, again on Knight Frank’s November 2025 data, with secondary around 6.0 percent. Savills puts prime UK self-storage at about 5.0 percent net initial yield, with secondary about 6.0 percent or wider. In offices, Savills has prime City at about 5.25 percent and prime West End at about 3.75 percent, with prime regional offices wider, broadly in the 6 to 7 percent range for the strongest regional cities and a sharp prime-to-secondary divide.

The lesson for the mortgage is that the keener the prime yield, the higher the stabilised value, but a lease-up asset never transacts at the prime yield until it is actually stabilised. The prime yield is quoted only for prime, stabilised, institutional-grade assets, so the whole job of the stabilisation debt is to carry the asset to the point where the prime yield applies to it. When it does, the commercial mortgage can be sized against the value that yield creates. The wider backdrop is supportive: UK commercial real estate investment volume reached 62.8 billion pounds in 2025 with a strong Q4 of 26.6 billion pounds on the CBRE count, and the average prime equivalent yield was about 5.91 percent at end-2025 on Savills’ read, hardening modestly from about 5.98 percent a year earlier. A recovering, hardening market makes the refinance exit more open than it was at the rate peak, and that backdrop sets the tone for commercial mortgages across the stabilised sectors in 2026.

Pricing: a margin over SONIA or base, or a fixed rate

Commercial mortgages of this kind are priced as a margin over a variable reference rate, usually SONIA or Bank Rate, or as a fixed rate over the chosen period. SONIA is the sterling overnight benchmark that tracks Bank Rate closely and is the variable reference most commercial term debt is priced over, so with Bank Rate at 3.75 percent and held since December 2025, that sets the floor under the cost of debt, and the lender’s margin sits on top.

The margin is the lender’s read on the income, the asset and the risks attached to the business behind it. A prime, well-let asset with a long lease to a strong covenant in a liquid sector earns a thin margin, because the income is contracted, durable and easy to refinance or sell. A more specialist asset, a shorter lease, a softer covenant or a thinner sector earns a wider margin. The same five tests that decide loan to value and interest cover, occupancy, the rent roll, the covenant, the lease and the yield, decide the margin, because they are all reads on how safe the income is.

Choosing between fixed and variable is a view on rates and certainty, and lenders offer investment mortgage products on both bases. A variable rate margin over SONIA or base moves with Bank Rate, so the cost falls if rates are cut and rises if they climb. A fixed rate locks the cost for the period, giving certainty on the mortgage payments and a predictable interest cover, at the price of not benefiting if rates fall. When an investor or landlord comes to choose between the two, the call rests on how much rate certainty the business needs against how much room it wants to gain if rates ease. Many of these mortgages blend the two, fixing for a period and floating for the rest. Whichever product, the mortgage is sized so the income covers the debt service with headroom at the rate that applies, and on variable rate debt at a stressed rate above it.

Term, security and which lenders fund it

The mortgage term runs from 5 to 25 years, with fixed or variable rate periods within it, and that long tenor is one of the things that sets these products apart from the short bridge, making them patient money rather than a quick fix. The length matches the asset: a standing property producing settled income can support debt held for years, refinanced or repriced as the income grows, as leases renew or as the value re-rates with the cycle. A stabilisation bridge is months; a lease-up facility is twelve to twenty-four months; the commercial mortgage is the long horizon those shorter facilities hand the asset onto.

The security is a first legal charge over the property, a debenture over the borrowing business and an assignment of rents, so the rental income flows to the lender’s security. That package gives the senior lender first call on both the asset and its income, which is part of why a senior commercial mortgage is the cheapest layer in the stack: it is the best secured. Mezzanine or preferred equity, where used during the stabilisation phase, sits behind this senior charge and is repaid after it.

The funding for these commercial investment mortgages comes from distinct lender camps, which we never name individually, and each camp brings its own range of products. Senior investment lenders, including clearing and insurance-backed lenders, have the keenest appetite for prime, stabilised, well-let standing assets and write the longest, cheapest senior term debt. Challenger banks also fund stabilised, well-let standing assets, often with a little more flexibility on their products for a slightly wider margin. Specialist real estate debt funds and the bridging loans desks carry the deepest appetite for the riskier, shorter property finance that precedes the mortgage, and mezzanine and preferred-equity providers fund the stretch behind the senior debt. Matching a stabilised asset and the business behind it to the camp whose appetite genuinely fits, rather than sending the application everywhere, is most of the work of arranging the commercial mortgage well.

How we approach a senior investment term loan

We start from the income and the covenant, because that is where the lender starts. We read the occupancy, the rent roll, the lease and the operator business, form a view on the prime yield for the sector and therefore the stabilised value, then test where the loan to value and the interest cover are likely to land against each lender camp’s criteria before we take the application to market. Senior investment lenders and challenger banks structure their commercial mortgages differently, so that read tells you early whether an asset is a 70 percent, thin-margin commercial mortgage with a senior investment lender, or a more specialist asset that needs a challenger bank, a more conservative loan to value and a wider margin. As general market commentary we are happy to advise on the benefits and trade-offs of each route, so the investor or landlord can choose with the full picture in front of them; we are not authorised to give regulated advice, and we refer any regulated matter out.

On a stabilisation deal still in progress, we work the commercial mortgage backward from the start: we arrange the bridging loans or the lease-up facility toward a term-loan exit we have already pressure-tested, so the short debt and the long debt fit together and the refinance is there when the asset stabilises. We then place the deal with the lender camp whose appetite actually fits it, so the mortgage survives the interest cover test with headroom and sits sensibly on the asset, and on the business that owns it, for the long term.

FAQ

What is a senior investment term loan? It is a commercial investment mortgage: long-term senior debt secured by a first legal charge against a stabilised, income-producing commercial property held by a business. It is sized on the net rental income and its coverage of the mortgage payments, with loan to value indicatively 65 to 75 percent of investment value, a term of 5 to 25 years, and pricing as a margin over SONIA or base, on a variable rate or a fixed rate.

What does a lender look at before sizing it? Occupancy at the sector’s mature level held through a trading period, the rent roll, the tenant or operator covenant, the lease and its unexpired term and reviews, and the prime yield for the sector. Together these decide loan to value, interest cover and the margin, and they shape the application the business makes.

Why are commercial mortgages cheaper than the stabilisation debt before them? Because they are priced on income that already exists and a covenant a lender can read, secured by a first charge, debenture and assignment of rents. The bridging loans before them were priced on a path to an income that did not yet exist, which carries more risks and so a higher rate. That gap is the whole reason investment mortgages sit at the end of a stabilisation deal rather than the start.

How does the sector yield affect the loan? Value is income divided by yield, so the prime yield for the sector sets the stabilised investment value the loan to value is a percentage of, and signals how liquid the exit is. On the named research houses’ early-2026 guides, prime industrial is about 5.00 to 5.25 percent, prime build-to-rent about 4.25 percent and prime self-storage about 5.0 percent. A keener yield means a higher value and supports more debt.

Who funds these commercial investment mortgages? Senior investment lenders, including clearing and insurance-backed lenders, write the keenest, longest senior term debt on prime stabilised assets, with challenger banks also active on well-let standing assets and their own product ranges. Because these camps price the same products differently, we never name a specific lender; we match the asset and the business to the camp whose appetite fits it.

Talk to us

If you are holding a stabilisation asset that is reaching its stabilised income, refinancing an existing facility that is coming to term, or arranging the bridging loans that will carry the asset there, the earlier we see the income and the covenant the better we can shape the commercial mortgage exit around the interest cover test and the right lender camp. We arrange commercial mortgages across all the major sectors, so we will give you a realistic read on loan to value, pricing, products and structure before you commit, set out the benefits and the criteria each camp applies, and place the application with the lenders whose appetite genuinely fits your business. That read is general market commentary rather than regulated advice. To get started, talk to a stabilisation finance specialist.

Commercial investment property finance of this kind is unregulated commercial lending. We are not authorised by the Financial Conduct Authority, and we arrange and place finance rather than lend it. Where a deal involves a regulated element, we refer it to an appropriately regulated firm. Everything here is general information and indicative market commentary, illustrative and never an offer of finance. This article was written by Matt Lenzie.