Mixed-use properties, think a shop with flats above, or an office with residential space attached, are increasingly popular with investors. To finance these, you’ll often need a semi-commercial mortgage.
- What is a Semi-Commercial Mortgage?
A semi-commercial mortgage is designed for properties with both residential and commercial elements. Common examples include:
- A retail shop with flats above.
- A pub or restaurant with landlord accommodation.
- An office block with a residential conversion element.
- Why Invest in Mixed-Use Property?
- Higher yields: Commercial units often deliver stronger rental returns.
- Diversification: Spreads risk across residential and commercial tenants.
- Resilience: Residential demand stays strong even if the commercial unit is vacant.
- Development opportunities: Possibility of converting commercial space into more flats.
- How Semi-Commercial Mortgages Work
- Loan-to-value (LTV) typically 65–75%.
- Rates can be slightly higher than standard buy-to-let but lower than pure commercial.
- Affordability is assessed on a mix of rental income and, where relevant, personal or business income.
- Can be arranged on repayment or interest-only terms.
- Costs to Factor In
- Arrangement and valuation fees.
- Legal costs (often more complex than residential).
- Stamp Duty Land Tax (SDLT) commercial rates apply.
- Potential VAT on the commercial element.
- Pros
- Stronger yields than standard residential.
- Lower risk than fully commercial investment.
- Access to both residential and commercial markets.
- Cons
- Specialist product therefore fewer lenders, stricter criteria.
- Complexity of managing both residential and commercial tenants.
- Financing can be slower and more paperwork-heavy.
- Tips for Success
- Research demand for both residential and commercial in the area.
- Check the EPC (energy performance) requirements, especially for commercial units.
- Use a broker who understands mixed-use lending.
- Consider long-term potential (e.g., conversion of commercial space).
Key Takeaway
Semi-commercial mortgages give investors the flexibility to tap into both commercial and residential income streams. They’re a great option for those looking to diversify, but require careful planning, expert advice, and a clear strategy.



