Mixed-use properties — such as shops with offices or flats above them — are increasingly common in UK towns and cities. While these buildings maximise space and income potential, they present unique challenges when it comes to Energy Performance Certificates (EPCs). Property owners often find that EPC assessments for mixed-use premises are far from straightforward.
Why EPCs Matter for Mixed-Use Properties
An Energy Performance Certificate (EPC) is legally required for selling or renting both the commercial and residential parts of a building. However, unlike a typical home or single-use building, mixed-use properties often require separate EPCs — one for the commercial space and another for the residential units.
This is because EPCs are designed to assess distinct energy systems and usage patterns, which can vary greatly between a shop, an office, and a flat above.
👉 Learn more about EPC basics on our About Us page.
Key Challenges in Mixed-Use EPC Assessments
1. Different Usage Patterns
Shops may use high-energy lighting, refrigeration, or air conditioning.
Offices often rely on computers, heating, and ventilation systems.
Flats use domestic heating, hot water, and appliances.
Each space consumes energy differently, making a single EPC impractical in most cases.
2. Shared or Separate Heating Systems
If the shop and offices/flats share the same heating system, it complicates the EPC process. Assessors must determine how energy use should be allocated.
If each unit has independent systems, separate EPCs are required.
3. Access & Information Issues
EPC assessors need access to every part of the property. In mixed-use buildings, gaining entry to both commercial and residential areas can be tricky, particularly if tenants are involved. Missing data may result in a lower EPC rating.
4. Compliance with MEES Regulations
Landlords must ensure rental properties meet the Minimum Energy Efficiency Standards (MEES). In a mixed-use setup:
The shop/office must comply with commercial EPC rules.
The flat(s) must meet residential EPC requirements.
Failing to meet standards in any part of the property can limit its rental potential.
👉 See how our Residential EPC services cover this aspect.
Best Practices for Mixed-Use Property Owners
Get clarity early: Consult with an accredited EPC assessor to determine how many certificates you’ll need.
Upgrade strategically: Improvements in insulation, glazing, and heating efficiency benefit both commercial and residential areas.
Plan around tenants: Coordinate access in advance to avoid delays or incomplete assessments.
Act quickly when selling/letting: If you’re on a tight deadline, our Same-Day EPC Service can help.
Costs and Services
At Urgent EPC, we offer transparent pricing plans starting from just £59, with professional guidance tailored to complex properties like shops with offices or flats above.
You can also contact us for advice on whether your property needs one or multiple EPCs.
Final Thoughts
Mixed-use properties can be profitable, but they also bring unique EPC challenges. From shared heating systems to split usage patterns, getting the right certification is essential for compliance and long-term value. With expert assessment and smart upgrades, you can ensure your property meets standards across all areas — commercial and residential alike.
