What is a semi-commercial mortgage?
A semi-commercial mortgage is a loan secured against property that combines commercial and residential use within a single building or title. The classic example is a shop with a flat above it, but the category also covers pubs and restaurants with living quarters, offices with residential units, and buildings where the ground floor trades and the upper floors are let as homes. Because these properties are mixed-use, they need specialist lending rather than a standard buy-to-let or purely commercial mortgage.
What properties count as semi-commercial?
Lenders generally classify a property as semi-commercial or mixed-use when it has meaningful elements of both commercial and residential space. Common examples include:
- A retail shop with one or more flats above
- A pub, cafe, or restaurant with living accommodation
- An office or workshop with a residential unit attached
- A guest house or building with part commercial, part residential use
- A terrace where the ground floor is a business and upper floors are homes
The balance between the two uses matters. A property that is 90 percent residential with a tiny commercial element may be treated differently from one that is predominantly commercial.
How do lenders assess semi-commercial deals?
Semi-commercial mortgages are usually assessed as investment cases, with the rent from both the commercial and residential parts covering the loan. Lenders apply a debt service coverage ratio to test whether the combined rent comfortably exceeds the mortgage payments. They will consider:
- The lease and tenant strength of the commercial unit
- The rental value and lettability of the residential unit
- The condition and location of the whole building
- The split between commercial and residential floor area
- Whether the residential part is let, empty, or occupied by the business
How much can you borrow on a semi-commercial mortgage?
LTVs for semi-commercial property often sit slightly higher than for pure commercial, because the residential element is seen as providing additional security and lettability. As a general guide, expect to borrow up to around 70 to 75 percent of value, meaning a deposit of roughly 25 to 30 percent. The exact figure depends on the mix of uses, the tenants, and the strength of the borrower. Our deposit and LTV guide has more.
Why choose a semi-commercial property?
Semi-commercial investments can be appealing because they blend two income streams, which can smooth out voids. If the shop is empty for a period, the flat above may still generate rent, and vice versa. They can also offer better yields than pure residential in many areas. However, they demand more management and a lender that understands mixed-use, which is where specialist matching helps.
Regulated versus unregulated
Most semi-commercial lending is unregulated, because it involves lending to a business against a predominantly commercial asset. However, if you intend to live in the residential part yourself, the deal can tip into regulated territory, which narrows the lender pool and changes the process. Be clear about your intentions from the outset so your case is matched to the right lenders.
Getting a semi-commercial mortgage with Assesr
Mixed-use cases are exactly where a strong, well-structured application pays off, because not every lender has an appetite for them. Assesr builds a lender-ready credit paper in around 60 seconds and matches your semi-commercial deal to commercial mortgage 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
What counts as a semi-commercial property?
A semi-commercial or mixed-use property combines commercial and residential space in one building or title. Common examples include a shop with a flat above, a pub with living accommodation, or an office building with a residential unit.
Are semi-commercial mortgage rates cheaper than fully commercial ones?
Sometimes. The residential element can make a property attractive to a wider pool of lenders, which can improve pricing. However, the commercial component still drives the assessment, so rates usually sit closer to commercial than pure buy-to-let.
Can I live in the residential part of a semi-commercial property?
This depends on the lender and the structure. If you occupy the residential unit personally, the deal may fall into regulated territory, which changes the lender options. Most semi-commercial lending assumes the residential part is let or occupied by the business.