Four-storey retail property, Portsmouth
A four-storey commercial property comprising a ground-floor retail unit with office and storage accommodation on the upper floors.

📝 The Project
We were instructed to carry out a Commercial EPC assessment for a prominent retail premises on Commercial Road in Portsmouth.
Covering approximately 603 m², the building extended over four floors and required careful zoning to accurately represent the different uses throughout the property. The assessment was required as part of a commercial lease renewal.
The ground floor comprised the main retail sales area, while the upper floors contained management offices, staff facilities, storerooms and ancillary accommodation.
🏢 Property Type:
Four-storey Retail Premises on busy High Street
📐 Building Size
603 m²
🏛️ Building Classification
A1/A2 Retail (SBEM Level 3)
🎯 Reason for Assessment:
Lease renewal
📊 EPC Rating:
C
🛠️ Additional Services:
📍 Location:
Portsmouth, Hampshire (PO1)
✅ Project Outcome:
Although the building services were relatively straightforward, the size of the property meant the survey required careful planning and detailed modelling. Nineteen separate thermal zones were created to reflect the different uses throughout the building.
The retail sales floor was served by two Toshiba air source heat pump systems of differing capacities, providing heating and cooling to separate areas of the shop. Offices and staff accommodation were heated using electric panel heaters, while upper storage areas remained unheated where appropriate. Hot water requirements were minimal and provided by a standalone water heater serving the staff kitchenette.
By accurately modelling the various heating strategies and occupancy patterns across four floors, the assessment was completed efficiently and the Commercial EPC was produced promptly, supporting the client's lease renewal while demonstrating Certus Commercial's capability to undertake larger, more complex retail assessments.




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Whether you're selling, letting or refinancing a commercial property, Certus Commercial provides fast, professional EPC assessments across Sussex and the South East.
"Needed an urgent Commercial EPC for our premises in Bexhill-on-Sea and couldn't be happier with the service. George moved his schedule around to fit me in immediately and had the full report completed with incredible turn-around time. Professional, knowledgeable, and extremely efficient. Highly recommend!"
Jake - Property Developer

