Whether you're a landlord with a portfolio of commercial units, a business owner selling or letting your premises, or a developer completing a new build — a valid, accurate Non-Domestic EPC is a legal requirement. And with commercial MEES deadlines tightening toward an EPC B requirement, knowing exactly where your property stands before the rules change is not optional — it's essential.
Kieran Bradnock
DEA & NDEA · PAS2035 Retrofit Assessor
Non-domestic EPCs use an Asset Rating (0–150+) — lower scores are better. E is the legal minimum for let properties. EPC B applies from 2031 to buildings over 1,000m² only, where cost effective — confirmed by government, 18 June 2026.
Since April 2023, all privately rented commercial properties must hold EPC E or above — including existing leases. F and G rated properties cannot legally be let. Fines start at £5,000 and can reach £150,000. Check your compliance →
Good news for most landlords, confirmed June 2026: the previously proposed 2027 EPC C milestone has been dropped. EPC E remains the minimum for properties under 1,000m², with no further deadline currently set. Only larger buildings face a new EPC B requirement, and not until 2031. Find out what this means for you →
A current EPC tells you where your property stands today. Following the government's revised approach confirmed on 18 June 2026, most commercial properties — those under 1,000m² — remain subject to the existing EPC E minimum, with no further deadline currently set. For larger properties over 1,000m² facing the new 2031 EPC B requirement, MEES modelling tells you exactly what that will involve and what it will cost.
Using the National Calculation Methodology (NCM) — the same software used to produce your non-domestic EPC — I model the impact of specific energy improvement measures on your property's rating. For properties over 1,000m², the output shows exactly what's needed to reach EPC B ahead of the 2031 requirement, in order of cost-effectiveness, before you commit to a single pound of expenditure.
Following the government's June 2026 update, the EPC B requirement is targeted specifically at non-domestic private rented buildings over 1,000m², taking effect from 2031, where cost effective. If your property is below this size, the current EPC E minimum continues with no further deadline confirmed. If you own or manage larger premises, understanding your position now — well ahead of 2031 — means you can plan calmly rather than under pressure as legislation is finalised.
MEES modelling gives you a clear improvement roadmap with indicative costings — so you can plan capital expenditure, phase improvements across a portfolio, and make informed decisions about which properties to invest in and which to consider selling. This is the information your asset manager, accountant, or bank should be asking for.
A full NCM-modelled improvement report showing your current rating, the measures required to reach EPC B, their projected impact on the rating, and indicative costs — most relevant for properties over 1,000m² ahead of the 2031 requirement. Delivered alongside your EPC certificate — or as a standalone instruction if you already hold a current EPC and simply want to understand your compliance position.
EPC B from 2031 — but only for buildings over 1,000m². The government confirmed this targeted approach on 18 June 2026, dropping the previously proposed 2027 EPC C milestone entirely. Read the official statement → If your property falls under the 1,000m² threshold, the current EPC E minimum continues with no further deadline set. If it's larger, understanding your position now means you can act calmly and cost-effectively well ahead of 2031.
Model my property →A Non-Domestic EPC is a legal requirement in a wide range of situations. If any of the following apply to your property, you need one — and you need it before marketing begins.
Required before the property is marketed for sale. The EPC must be commissioned and made available to prospective buyers at the earliest opportunity — not after a sale is agreed.
Required whenever a commercial property is let to a new tenant, or on formal lease renewal. Must be in place before marketing begins — not at the point of signing.
Required on completion of any new commercial building. New-build commercial EPCs must be carried out by a Level 4 qualified assessor — KIEEPC holds the ABBE Level 4 Diploma and is fully qualified to assess new-build commercial properties.
Works to a building's heating, hot water, air conditioning or ventilation systems may require a new or updated EPC to reflect the change in energy performance. Fabric-only works do not typically trigger this requirement.
Buildings over 500m² that are frequently visited by the public and occupied by a public authority must display their EPC certificate prominently on the premises at all times.
Commercial EPCs are valid for 10 years. An expired EPC doesn't require immediate action — but if you are selling, letting or formally renewing a lease, a current certificate must be in place. Don't let expiry catch you out at transaction time.
The government published a revised approach to non-domestic MEES on 18 June 2026, replacing the previously proposed timetable with a more targeted one. The position below is more reassuring than widely expected for most commercial landlords.
All privately rented non-domestic properties must hold at least an E rating across all leases — new and existing. Landlords with F or G rated properties cannot legally continue to let them without registering a valid exemption.
The previously proposed interim EPC C milestone for 2027 has been confirmed as not being taken forward. For non-domestic buildings under 1,000m² — the vast majority of commercial stock — EPC E remains the minimum standard with no further deadline currently set.
From 2031, non-domestic private rented buildings over 1,000m² in England and Wales will be required to meet EPC B, where cost effective, subject to the existing 7-year payback test and exemptions. This is a targeted measure for the largest premises — not the wider commercial stock. Implementation follows secondary legislation passing through Parliament.
This timeline reflects the government's written ministerial statement of 18 June 2026 (HCWS126, UK Parliament →) and the accompanying briefing from accreditation body Quidos (read more →). Fines for non-compliance with the current EPC E standard start at £5,000 and can reach £150,000 depending on the rateable value of the property and the length of the breach.
As a fully accredited Non-Domestic Energy Assessor holding the ABBE Level 4 Diploma, KIEEPC can carry out EPCs and Part L compliance work across the full range of non-domestic property types — including new-build commercial buildings, extensions, and conversions requiring BRUKL output for Building Control.
All new commercial buildings require an EPC on completion, assessed from plans and specification using SBEM software. A BRUKL document is also required for Building Control Part L sign-off. Both require a Level 4 qualified assessor — KIEEPC holds the ABBE Level 4 Diploma and can deliver both outputs.
Significant extensions to existing commercial buildings and material changes of use (e.g. converting a warehouse to offices) trigger a Part L compliance check and may require a new or updated EPC. A BRUKL document from SBEM is typically required for Building Control. KIEEPC is qualified to carry out this work at Level 3 and Level 4.
From small single-suite offices assessed at Level 3 through to larger multi-floor, multi-zone buildings with complex HVAC systems at Level 4. KIEEPC is qualified across the full range of office and professional premises.
Workshops, light industrial units, storage premises and distribution warehouses. Many straightforward industrial units fall under Level 3 and can be assessed efficiently. Larger or more complex sites with significant heating or ventilation systems are assessed at Level 4.
High street units, retail parks, convenience stores and any lettable retail or consumer-facing space — from small lock-up units at Level 3 to larger premises with more complex building services at Level 4.
Restaurants, cafés, gyms, hotels and other leisure properties. These often present a mix of heating, ventilation and cooling systems — assessed using the National Calculation Methodology (NCM) at the appropriate level for the building's complexity.
Larger HMOs and properties with mixed residential and commercial elements often require a non-domestic EPC — but it isn't always obvious which applies. Converted buildings can fall either way depending on how they are used and let. KIEEPC can advise at no charge on which type of assessment is required.
Clinics, dental practices, nurseries, training centres and other specialist non-domestic uses. These properties frequently have specific ventilation and heating requirements — assessed at the correct level to accurately reflect the building's energy systems.
Unlike domestic EPCs, commercial EPCs are categorised into levels based on the complexity of the building and its energy systems. Getting the right level matters — an incorrectly levelled EPC may not satisfy legal requirements. Here's what each level means and what KIEEPC can cover.
Existing commercial buildings with straightforward characteristics — simple heating systems under 100kW, natural or basic mechanical ventilation, and small comfort cooling under 12kW. Assessed using SBEM software. Does not cover new-build properties.
Typical properties: Small shops, cafes, small offices, modest industrial units, small HMOs.
Larger or more complex existing buildings with heating over 100kW, cooling over 12kW, or sophisticated HVAC systems such as VAV, fan coils or chilled ceilings. Also covers all new-build commercial properties assessed from plans using SBEM software.
Typical properties: Larger offices, retail parks, industrial units, new-build commercial, larger HMOs and mixed-use.
The most complex commercial buildings — large atria, automated blind and vent controls, complex ventilation with enhanced thermal coupling, and other highly specialised building services that cannot be modelled accurately using simplified SBEM methods. Level 5 requires Dynamic Simulation Modelling (DSM) software and a specialist Level 5 qualified assessor.
Typical properties: Major commercial developments, large shopping centres, high-rise office buildings, airports and other highly complex structures.
Not sure which level your property requires? Get in touch — I'll advise you honestly and direct you to a Level 5 assessor if needed.
Commercial EPC pricing varies with the size, complexity and assessment level of the property. Unlike some national operators, there are no hidden fees and no subcontractors — every assessment is carried out personally by an accredited NDEA. The table below gives a realistic guide. All prices exclude VAT — KIEEPC is not VAT registered, so the price quoted is the price you pay.
| Property Size | Typical Property Types | Assessment Level | Starting From |
|---|---|---|---|
| Up to 250m² | Small retail units, lock-up shops, small offices, cafés, modest industrial units | Level 3 | From £225 |
| 250m² – 500m² | Mid-size offices, retail units, workshops, light industrial, larger HMOs | Level 3 or 4 | From £350 |
| Over 500m² or complex | Large offices, warehouses, industrial units, multi-zone buildings, complex HVAC | Level 4 | Quoted on survey |
| New-build + BRUKL | New commercial builds requiring EPC and Part L Building Control sign-off | Level 4 | Quoted on survey |
| MEES modelling (standalone) | Improvement roadmap to EPC B for buildings over 1,000m² ahead of the 2031 requirement | All levels | Quoted on survey |
Portfolio instructions and multi-property instructions — if you have more than one property requiring assessment, get in touch for a tailored quote. Volume work is considered and travel costs can be consolidated across multiple sites in the same area.
Prices shown are starting points for straightforward properties at the stated size. Floor area, building complexity, number of zones, heating and ventilation systems, and travel distance all affect the final figure. A quote is always provided before any instruction is confirmed — there is no charge for an initial discussion.
Tell me about your property and I'll come back to you with a no-obligation quote. Choose how you'd like me to reply — call, WhatsApp, text or email.
I'm a fully accredited Non-Domestic Energy Assessor (NDEA) and Domestic Energy Assessor (DEA) based in Wolverhampton, trading as KIEEPC. I hold the ABBE Level 4 Diploma in Non-Domestic Energy Assessment and carry accreditations with Elmhurst Energy, Quidos and ECMK — covering both domestic and commercial work from a single, accountable point of contact.
Commercial EPCs are not a commodity job. The accuracy of an NCM assessment — and the quality of the improvement recommendations alongside it — directly affects your compliance position and your investment decisions. I work to a high standard, advise honestly about what's required, and won't push you toward work you don't need.
Based in the West Midlands. Available nationally for commercial instructions, portfolio assessments and larger projects.
KIEEPC is based in the West Midlands and surrounding counties. For commercial instructions, portfolio assessments, new-build projects and larger instructions, nationwide coverage is available — travel is not a barrier.
Answers to the questions KIEEPC gets asked most often about non-domestic EPCs, MEES compliance and assessment levels.
A Non-Domestic EPC is required whenever a commercial property is sold, let to a new tenant, or has a lease renewed. It is also required on completion of a new commercial building or following significant modifications to the building's heating, cooling or ventilation systems. The EPC must be commissioned before marketing begins — it cannot be obtained retrospectively once a transaction is underway. There are some exemptions, including certain listed buildings and places of worship, but these are narrower than many owners assume. If you are unsure whether your property requires one, get in touch and we will advise you clearly.
A Non-Domestic EPC shows the Asset Rating — a theoretical measure of how energy efficient the building is based on its fabric, fixed building services and standard occupancy assumptions. It reflects the building itself, not how any particular occupant uses it. The Operational Rating, by contrast, is based on actual measured energy consumption from meter readings over a twelve-month period and reflects real-world use. The two can differ significantly — a well-rated building in poor hands can perform badly operationally, and vice versa. For the purposes of MEES compliance and legal letting requirements, it is the Asset Rating that counts.
The Building Rating — expressed as a score from A+ to G — is calculated using the National Calculation Methodology (NCM) and its associated software, SBEM. It is determined by a combination of factors including the building fabric (wall, roof and floor insulation, glazing), the efficiency of the heating and hot water systems, cooling and ventilation arrangements, controls and zoning, and the type and efficiency of the fixed lighting. The assessment uses standardised occupancy and operating patterns so that buildings can be compared on a like-for-like basis regardless of how they are actually used. Improvements to any of these elements — particularly heating plant and lighting — can move the rating meaningfully.
Lighting is one of the more significant variables in a non-domestic EPC, particularly in properties with large floor areas or high occupation hours — retail, warehousing and office spaces especially. SBEM models the installed lighting based on lamp type, luminaire efficacy and the presence or absence of controls such as occupancy sensors, daylight-linked dimming and time switching. Older T8 fluorescent fittings perform considerably worse than modern LED equivalents, and the absence of controls compounds the gap. Replacing fluorescent or high-pressure sodium lighting with high-efficacy LED fittings and adding appropriate controls is consistently one of the most cost-effective routes to improving a commercial EPC rating — and one of the first things a MEES modelling exercise will typically identify.
Commercial EPCs are categorised by the complexity of the building and its energy systems — not its energy rating. Level 3 covers simple existing buildings: heating under 100kW, basic ventilation, small comfort cooling under 12kW. Typical properties include small shops, cafés and modest offices. Level 4 covers larger or more complex existing buildings — heating over 100kW, sophisticated HVAC such as VAV systems, fan coils or chilled ceilings — and all new-build commercial properties assessed from plans. Level 5 covers the most complex buildings requiring Dynamic Simulation Modelling (DSM) software. KIEEPC holds the ABBE Level 4 Diploma and is qualified to carry out Level 3 and Level 4 assessments, including new-build commercial buildings. Level 5 is outside our current scope — we will advise honestly and refer where needed.
Since April 2023, all privately rented commercial properties in England and Wales must hold a minimum EPC rating of E. Properties rated F or G cannot legally be let. Following a government update on 18 June 2026, the previously proposed 2027 EPC C milestone has been dropped entirely. EPC E remains the minimum standard for non-domestic buildings under 1,000m² — covering the vast majority of commercial stock — with no further deadline currently confirmed. Only buildings over 1,000m² face a new EPC B requirement, from 2031. See the official government statement →
Following the government's revised approach confirmed on 18 June 2026, EPC B will apply from 2031 — but only to non-domestic private rented buildings over 1,000m², and only where cost effective under the existing 7-year payback test and exemptions. If your property is below this size, it remains subject to the current EPC E minimum with no further deadline set. Legislation to bring this into force is still to pass through Parliament. Read the industry briefing →
MEES modelling uses the National Calculation Methodology (NCM) software — the same tool used to produce a non-domestic EPC — to assess what improvement measures a property would need to reach a higher EPC band. Since the government's June 2026 update, this is most relevant for properties over 1,000m², which face a new EPC B requirement from 2031. Properties below this size remain subject to the existing EPC E minimum. The output is a clear improvement roadmap with indicative costings, allowing landlords to plan capital expenditure and understand their compliance position with confidence.
PAS 2038 is the publicly available specification for retrofitting non-domestic buildings to improve their energy efficiency. It is the commercial equivalent of PAS 2035, which governs domestic retrofit. PAS 2038 sets out a structured process — starting with an assessment of the building's current condition and performance, through to the design, installation and handover of improvement works — and requires that retrofit projects are led by a qualified Retrofit Coordinator. It applies where grant funding or government-backed finance schemes require compliance, and is increasingly being adopted voluntarily by landlords seeking a defensible, documented approach to improving their portfolio ahead of MEES deadlines. If you are planning significant works to a commercial property and want to understand whether PAS 2038 applies or would be beneficial, get in touch to discuss.
A Non-Domestic EPC is valid for ten years from the date of issue, provided the building has not undergone material changes in the intervening period. Changes that can invalidate an existing certificate include significant alterations to the heating, cooling or ventilation systems, the installation of renewable energy equipment, or substantial changes to the building fabric. Where such changes have taken place, a new EPC should be commissioned even if the ten-year validity has not expired — relying on an out-of-date certificate that no longer reflects the building's actual specification is not a defensible position. It is also worth noting that an EPC produced before a significant improvement programme will not reflect the improved rating — a fresh assessment will be needed to demonstrate the uplift.
Yes — and in practice the majority of commercial EPCs are carried out on occupied properties. The assessor needs reasonable access to the building to record the construction, heating, ventilation and lighting systems, and to inspect plant rooms, meter locations and building services. In most cases this can be arranged through the tenant directly or via the managing agent. It is worth giving the tenant advance notice and, where the building has multiple tenants, coordinating access to shared plant areas. For larger or multi-let properties it is sensible to agree an access programme in advance. If access is a concern, get in touch and we can discuss the practical arrangements before confirming the instruction.
A BRUKL (Building Regulations UK Part L) document is the compliance output produced by SBEM software demonstrating that a new commercial building or significant extension meets the energy efficiency requirements of Part L of the Building Regulations. It is required by Building Control for sign-off on new commercial builds and certain extensions or changes of use — and is separate from, though related to, the EPC. Both are produced from the same SBEM model. KIEEPC holds the ABBE Level 4 Diploma and is qualified to produce BRUKL documents alongside EPCs for new-build commercial properties.
Commercial EPC pricing varies with the size, complexity and assessment level of the property. As a guide, simple existing units up to 250m² start from £225, and mid-size properties between 250m² and 500m² from £350. Larger, more complex and new-build properties are quoted on survey — floor area, number of zones, heating and ventilation systems and travel distance all affect the final figure. KIEEPC is not VAT registered, so the price quoted is the price you pay. There is no charge for an initial discussion and no obligation to proceed once a quote has been provided.
Yes. KIEEPC is based in Wolverhampton and treats the West Midlands as a priority area, but is available nationwide for commercial instructions, portfolio assessments and larger projects. Travel is not a barrier for the right instruction — get in touch to discuss.