Non-Domestic Energy Performance Certificates (NDEPCs) from £180, produced by an experienced NDEA using SBEM modelling. Workshops, warehouses, factories, industrial units, offices, shops and pubs are a core part of our work. Where a building needs to be improved rather than simply certified, we pair the EPC with a Commercial Energy Advice Report and a clear MEES pathway.
Elmhurst & Quidos accredited
From survey to lodged NDEPC
Devon, Cornwall, Somerset, Dorset
Transparent Level 3 pricing
Offices, shops, warehouses, industrial units, pubs, cafés, surgeries and most SME commercial premises across Devon, Cornwall, Somerset and Dorset.
Practical, engineering-led consultancy for F/G rated buildings — modelled improvement options, costs, payback and the path to Band E, C and eventually B.
New-build and major refurbishment SBEM modelling for Part L Building Regulations compliance and as-built NDEPCs.
Devon, Cornwall, Somerset and Dorset. NDEA qualified assessors based in Exeter, covering Plymouth, Torbay, Taunton, Truro, Bournemouth and beyond.
Most commercial buildings in the South West — small offices, corner shops, retail parades, trade counters, warehouses, workshops, light industrial units, village pubs, B&Bs, cafés, surgeries, nurseries and community halls — sit within the Level 3 Non-Domestic EPC category. That is exactly what we assess every day.
A Level 3 assessment keeps the survey time proportionate, avoids unnecessary modelling complexity and keeps the fee competitive — while still producing a fully lodged, legally compliant NDEPC that meets the Energy Performance of Buildings (England and Wales) Regulations 2012 and can be used for sale, letting, MEES evidence, planning and lender due diligence.
Since April 2023 no commercial property in England or Wales can be let with an EPC below Band E. In DESNZ’s June 2026 interim response, the previously proposed 2027 EPC C milestone was dropped and a proposed EPC B by 2031 now applies only to buildings over 1,000 m2, where cost-effective and once secondary legislation passes. Smaller buildings remain at Band E with no further deadline currently defined. That’s why our EPC work and our Commercial Energy Advice consultancy are joined up.
If your building is rated D, E, F or G we’ll flag the practical upgrades — LED re-lamping, heating controls, destratification, roof insulation, cavity fill, solar PV, heat pump retrofit — that will actually move the rating, with indicative cost and payback. We’re independent of any installer, so the advice is engineering-led not sales-led. Read more about MEES for commercial buildings and our London G-to-B case study.
Alongside the core NDEPC service we provide full SBEM calculations for new-build and major refurbishment projects requiring Part L Building Regulations compliance, plus the as-built commercial EPC required for sign-off. This is the same SBEM engine that produces the EPC asset rating — getting the modelling right at design stage often makes the difference between passing Part L cleanly and a costly rework.
Exeter, Plymouth, Torbay, Newton Abbot, Barnstaple, Exmouth
Truro, Falmouth, Newquay, Penzance, St Austell, Bodmin
Taunton, Bridgwater, Yeovil, Chard, Glastonbury, Wells
Bournemouth, Poole, Dorchester, Weymouth, Bridport
A Commercial EPC — formally called a Non-Domestic Energy Performance Certificate (NDEPC) — is a legal energy rating for any non-dwelling in England, Wales and Northern Ireland. It rates the building from A (most efficient) to G (least efficient) and is produced by an accredited Non-Domestic Energy Assessor (NDEA) using SBEM or DSM software. The certificate is valid for 10 years and is required whenever a commercial building is constructed, sold or let.
Yes, under the Energy Performance of Buildings (England and Wales) Regulations 2012 you must have a valid Commercial EPC whenever a non-domestic property is marketed for sale or let, and on completion of a new build. Since 1 April 2023 the MEES Regulations (Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015) also make it unlawful to let a commercial property rated F or G in England and Wales, unless a valid exemption is registered on the PRS Exemptions Register. In its June 2026 interim response DESNZ confirmed the current Band E minimum stays for all lettings; a proposed EPC B by 2031 will apply to buildings over 1,000 m² only, where cost-effective — pending secondary legislation. The previously proposed 2027 EPC C interim milestone has been dropped.
All three produce the same official certificate. The level reflects the complexity of the building. A Level 3 EPC — the one we specialise in across the South West — covers simple buildings such as offices, shops, warehouses, small industrial units, pubs, cafés, surgeries and similar premises. Most small and medium commercial properties in Devon, Cornwall, Somerset and Dorset fall comfortably into Level 3, which keeps the assessment efficient and the price proportionate.
SBEM — the Simplified Building Energy Model — is the government-approved calculation engine used to produce a Level 3 Commercial EPC. Our assessor measures the building, records fabric U-values, heating/cooling plant, lighting, ventilation and domestic hot water, and the SBEM software models annual CO₂ emissions. The rating is a comparison against a hypothetical notional building of the same geometry built to current Building Regulations.
Our Level 3 Commercial EPC pricing starts at £180 for simple small premises (up to around 500 m²). Medium warehouses, retail parades and offices of 500–2,000 m² are typically £400–£800. Larger or multi-unit properties are priced individually. Travel surcharges to more remote parts of Cornwall, North Devon and North Dorset are calculated at booking so the total is transparent before you pay.
For most Devon, Somerset, Dorset and Cornwall commercial properties we can attend site within 5–7 working days of booking. The survey itself takes 1–3 hours depending on size and complexity. The finished NDEPC is usually lodged on the national register and emailed to you within a further 5–7 working days. Urgent same-week service is available on request.
You cannot legally continue to let it unless a valid exemption is registered on the PRS Exemptions Register. We offer a separate MEES Commercial Advice Report that models practical improvement options (LED lighting, heating controls, insulation, PV etc), their payback and the resulting rating. The advice report and the EPC are designed to work together so you have a defensible compliance file for your tenants, lenders and insurers.
Real commercial buildings we've assessed and modelled, with the rating journey, costs and final outcome.
Five-option improvement pathway with full financial payback analysis. Listed Victorian period building modelled in SBEM, demonstrating that even the most challenging heritage stock can reach Band A with the right staged plan.
Read case studyMixed office and workshop premises with oil boiler heating. SBEM-modelled improvements covering oil boiler replacement, LED lighting upgrade and fabric measures with full MEES compliance recommendations for the landlord.
Read case studyTwin industrial workshop refurbishment with LED lighting, AC heat pump heating and roof / wall insulation upgrades. SBEM modelling demonstrating Band B compliance ready for the proposed 2030 commercial standard.
Read case study