Commercial Retail (Charity Shop)
Retail property, Hastings - Non-standard construction featuring a subterranean rear boundary built directly into a cliff face.

📝 The Project
Accurately modeling a 550 m² space where the rear structure is integrated into solid rock. In standard SBEM (Simplified Building Energy Model) software, traditional exterior walls exchange heat with ambient outside air. For this property, the subterranean back wall had to be modeled precisely against unheated ground/earth boundaries to ensure thermal performance wasn't penalized by generic assumptions. Additionally, the site contained deep, historic brickwork storage areas that required detailed zoned assessments.
Our Approach & Solution Certus Commercial conducted a comprehensive site audit and tailored thermal modeling strategy:
Custom Thermal Boundary Modeling: Managed the unique cliff-side construction by assigning correct thermal mass and ground-coupling factors to the rear boundary, reflecting real-world energy retention.
Lighting Infrastructure Audit: Evidenced and calculated the complete transition from legacy T8 and T5 fluorescent lighting to modern, high-output LED fixtures across the entire 550 m² floor plan.
Zoned Analysis: Segmented the main retail sales floor from the deep brick backroom spaces to optimize HVAC and lighting input parameters.
🏢 Property Type:
Commercial Retail (Charity Shop)
📐 Building Size
550 m²
🏛️ Building Classification
A1/A2 Retail (SBEM Level 3)
🎯 Reason for Assessment:
Lease renewal
📊 EPC Rating:
B
🛠️ Additional Services:
📍 Location:
Hastings, East Sussex (TN34)
✅ Project Outcome:
The full LED retrofit—combined with accurate structural modeling of the cliff face—delivered a massive jump in overall energy performance.
Final EPC Rating: B
MEES Compliance: Fully compliant with current and upcoming Minimum Energy Efficiency Standards, safeguarding the commercial viability of the building.
Client Impact: Reduced operational running costs for the tenant and a significantly reduced carbon footprint.




Further Resources
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Need a Commercial EPC?
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

