Semi-Commercial Mortgages in 2026: Rates, Deposits and Lender Criteria
A parade of four shops in a Lincolnshire market town comes up at auction with a guide of 640,000 pounds. Downstairs there is a pharmacy, a barber, a florist and a vacant unit that was last a bookmaker. Upstairs there are six flats, five of them let. The investor who wants it rings her residential lender first, because that is who she knows, and gets a polite no within a minute. Her buy-to-let lender says the same. The building has trading shops on the ground floor, so neither desk can touch it. What she needs is a semi-commercial mortgage, a term loan built for property that is part commercial and part residential under one title. On the indicative bands we see across our lender panel in 2026, that loan prices at 6.5 to 8.5 percent a year at up to 70 to 75 percent of value, and the flats above are what make it cheaper than a pure commercial facility, not more expensive.
Semi-Commercial Property Finance, a trading name of Lenzie Consulting Ltd (company number 08174104), is a UK finance arranger and introducer, not a lender. Semi-commercial and mixed-use finance arranged for business and investment borrowers is unregulated lending and sits outside the Financial Conduct Authority’s regulated mortgage perimeter, so the business is not FCA authorised. Where an individual borrower will personally occupy the residential element of the property the loan can fall under regulated rules, and those cases are referred to a regulated firm. Every figure below is an indicative published band from semicommercialpropertyfinance.co.uk as of mid 2026, not an offer of finance.
In the episode below, Georgina walks through the whole asset class, from how a lender decides a building is semi-commercial in the first place to how the rent from both floors sets the loan.
The split comes before the price
The first thing any lender asks about a shop with a flat above is not the price. It is the split. How much of the building, by floor area or by value, is commercial and how much is residential. That single judgement decides which desks will look at the property at all.
The working rule most lenders apply is that where the residential part is around 40 percent or more of the whole, the building starts to read as residential and gets handled by residential or buy-to-let teams with their own criteria. Below that, it sits in the semi-commercial bucket and is underwritten as a commercial facility. This is a guideline, not a statute, and lenders apply it with some variation. A three-storey building with a small ground-floor shop and two large flats above can be borderline, and the answer can change the rate by a full percentage point and the deposit by tens of thousands of pounds.
The first thing any lender asks about a shop with a flat above is not the price. It is the split.
We measure the split before we approach anyone. Getting that wrong at the start means a declined application, a wasted valuation fee and a credit search on file for nothing.
What a semi-commercial mortgage actually funds
The asset class is wider than the classic corner shop. A semi-commercial mortgage covers any single title that mixes a trading or lettable commercial unit with living accommodation:
- A shop, cafe or takeaway with a flat above
- An office building with residential upper floors
- A pub, hotel or guest house with an owner’s flat or letting rooms
- A retail parade with flats over the units
- A surgery, dental practice or vet with a residential unit attached
- A live/work unit or a mixed-use block in a town centre
The loan is secured against the whole building. Terms run from 5 to 25 years, and the borrower can be an individual, a partnership or a limited company, including a special purpose vehicle set up just to hold the property. Limited company ownership is the norm for investment cases and specialist semi-commercial lenders are set up for it, usually with a personal guarantee from the directors.
Rates and where the number comes from
On the indicative bands published for mid 2026, semi-commercial mortgages price at 6.5 to 8.5 percent a year across our lender panel. Owner-occupier cases, where the borrower trades from the commercial unit, tend to sit a little lower at 6.0 to 7.5 percent, because the lender takes comfort from a business that depends on the premises staying open.
Most of these loans are priced as a margin over a reference rate rather than as a fixed number. The Bank of England base rate sits at 3.75 percent, held at the 30 July 2026 decision, and the margin a lender adds on top reflects its view of the risk on the specific building and borrower. Four things move that margin more than anything else:
| Driver | Pulls the rate down | Pushes the rate up |
|---|---|---|
| Loan to value | 60 percent or below | At the 70 to 75 percent ceiling |
| Commercial tenant | Established trader, long lease | Short lease, new business, vacant unit |
| Residential part | Let on standard tenancies | Vacant or in poor condition |
| Borrower | Experienced landlord, clean credit | First property, adverse history |
On top of the rate, expect a lender arrangement fee of around 1.5 to 2 percent of the loan, a commercial valuation fee that scales with the building, and legal fees on both sides. A cheap headline rate with a heavy fee can cost more over five years than a slightly dearer rate with a light one, so we compare the all-in cost rather than the front number.
Deposits: 25 to 30 percent, and why
Because most lenders advance up to 70 to 75 percent of the valuation, the deposit on a purchase is 25 to 30 percent. On a refinance the same figure is the equity you need to hold.
Take a 400,000 pound shop with two flats above. At 75 percent loan to value the lender advances 300,000 pounds and the buyer finds 100,000. At 70 percent the loan is 280,000 and the deposit 120,000. At 65 percent, which a high street bank may prefer on a building with a weaker commercial tenant, the deposit rises to 140,000 pounds. Every five points of loan to value is 20,000 pounds of cash on a purchase of that size, which is why the strength of the commercial let matters so much: it is the difference between the top of the band and the middle of it.
The deposit has to be evidenced and its source explained. Savings, the sale of another property, a director’s loan into the SPV and gifted equity from family are all workable. Borrowed deposits are not, unless the lender has agreed to them in advance.
The income test: combined rent at 125 to 140 percent
Loan to value sets the ceiling. The rent sets the actual number. Lenders add the commercial rent and the residential rent together and test the total against a stressed interest cover ratio, usually 125 to 140 percent at a stress rate above the pay rate.
Here is the arithmetic on a typical case. A shop lets at 18,000 pounds a year and the flat above at 12,000 pounds, so combined rent is 30,000 pounds. The lender applies a 130 percent interest cover ratio at a 9 percent stress rate. The maximum loan is 30,000 divided by 1.30 divided by 0.09, which comes to about 256,000 pounds. If the building is worth 400,000 pounds, the 75 percent loan to value ceiling would allow 300,000, but the rent only supports 256,000, so 256,000 is the loan. The borrower either finds a larger deposit or evidences higher rent.
Where the commercial unit is vacant, most lenders size the loan on the residential rent alone until it lets, which can cut the advance sharply. That is often the moment a bridging loan or a bridge-to-let facility makes more sense than a term mortgage, with the refinance following once both floors are producing income.
Three lender camps and how each thinks
Semi-commercial property is funded by three broad groups, and each has a different box.
High street banks will lend through their commercial arms on a clean asset: a long-established commercial tenant, a fully let flat, an experienced borrower and a modest loan to value, often capped nearer 70 percent. They price keenly for that profile and slowly for anything else.
Challenger banks and specialist semi-commercial lenders take a wider view. Complex splits, newly formed SPVs, portfolio landlords, part-vacant units and licensed uses such as a pub or a takeaway with a flat above are all within reach. They tend to stretch to the full 75 percent, move faster, and price a little higher for the flexibility. Many of them only accept business through intermediaries, so a borrower cannot reach them directly.
Bridging lenders sit alongside both, funding the purchase or refurbishment of a building that does not yet qualify for a term loan, at 0.70 to 0.95 percent a month over 1 to 24 months, with the exit being a semi-commercial mortgage once the building is let and stable.
Neither camp is better than the other. The right lender is whichever one’s criteria the building actually meets, and that is decided case by case.
2026 outlook
Pricing across the asset class has been steady through the summer. The Bank of England held base rate at 3.75 percent on 30 July 2026, with the next decision due on 17 September 2026, and because most semi-commercial mortgages are priced as a margin over a reference rate, any move at that meeting feeds directly into what borrowers pay. Stress rates have eased a little from their 2024 peak, which has lifted the loan the same rent supports, but lenders remain cautious on vacant commercial units and on secondary retail. A case that works with headroom at today’s rates is placeable; one that only works if rates fall is not.
FAQ
What is the difference between a semi-commercial mortgage and a commercial mortgage? A commercial mortgage funds wholly commercial premises and is priced on business use alone. A semi-commercial mortgage funds a building with both a commercial and a residential element, and is sized on the combined rent from both. It is usually cheaper than an equivalent commercial loan because the residential part lowers the lender’s risk.
How much deposit do I need for a semi-commercial mortgage? Typically 25 to 30 percent of the purchase price, since most lenders advance up to 70 to 75 percent loan to value. A strong commercial tenant and a let flat support the higher loan to value; a vacant unit or a first-time borrower pushes the deposit up.
Can I get a semi-commercial mortgage through a limited company? Yes. An SPV or trading limited company holding the property is standard for investment cases, and specialist semi-commercial lenders are built for it. Directors usually give a personal guarantee, and the rate does not carry a meaningful company penalty on these assets.
Is a semi-commercial mortgage regulated? For business and investment borrowers, no. It is unregulated lending outside the FCA’s regulated mortgage perimeter. The exception is where an individual borrower will personally live in the residential part, which can pull the loan into regulated territory; we refer those cases to a regulated firm.
Talk to us
If you are buying or refinancing a shop with a flat above, a parade with uppers or any other mixed-use building, we can tell you within a day which camp it falls into and what the rent will support. Start with our semi-commercial property finance overview, read the detail on a semi-commercial mortgage, or work through the semi-commercial mortgage deposit guide before you make an offer. See also our guide to the 40 percent rule if your building is close to the line.
All figures in this article are indicative published bands for UK semi-commercial and mixed-use finance in 2026, not an offer, a quote or a financial promotion, and any facility is subject to lender terms, valuation and full underwriting. This article was written by Matt Lenzie.
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