Non-residential EPC: for commercial and public buildings

A non-residential EPC is an energy performance certificate specifically for buildings that are not used as dwellings: offices, shops, restaurants, cafes, practice rooms, showrooms and other commercial premises. Whether an EPC is required when selling or renting depends on the type and size of the unit. Ask us and we will tell you upfront what is needed. The non-residential EPC differs from the residential EPC in its calculation method: it takes into account lighting, cooling and the specific use of the building. In our experience, many business owners underestimate the importance of a correct EPC for their commercial premises, it not only provides insight into energy costs but also influences attractiveness for tenants or buyers.

During a non-residential inspection, we check all elements that influence the energy performance of the building:

• Building envelope — facades, roof, floor, insulation values per construction element
• Glazing and external joinery — glass type, frame material, sun shading
• Heating — installation type, capacity, controls, distribution system
• Cooling — presence and type of cooling system, EER/COP values
• Lighting — fixture types, wattage, occupancy detection, daylight control
• Ventilation — mechanical or natural, heat recovery
• Hot water — production method and distribution
• Renewable energy — solar panels, heat pump, CHP

The inspection is more extensive than for a dwelling due to the more complex installations. During our inspections, we pay extra attention to the lighting installation, which often accounts for a large share of energy consumption in offices and shops.

For an accurate non-residential EPC, the following documents are useful:

• Building plans or as-built plans with surface areas
• Technical data sheets of HVAC installations (heating, cooling, ventilation)
• Lighting plan or fixture inventory
• Invoices for insulation work or renovations
• EPB declaration (for new construction or major renovation)
• Maintenance certificates for heating and cooling installations

In our experience, many commercial premises do not have complete technical documentation. Our expert can in that case work with visual observations and default values, but a complete file always leads to a more accurate and often more favourable result.

The inspection of a small non-residential building (50 to 500 m2) takes on average 2 to 4 hours, depending on the complexity of the installations and the available documentation. After the site visit, you typically receive the certificate within 48 hours. For larger or more complex premises, this may take slightly longer.

The price of a non-residential EPC depends strongly on the surface area and complexity of the building and is therefore on request. Request a free quote and you will receive a price within 1 business day. Also see our pricing page for what is included.

Separate rules apply to non-residential buildings. An EPC for small non-residential units (up to 500 m²) is valid for 10 years and is drawn up by a type A energy expert. When it is required depends on the type and size of the unit. Since 1 January 2022, a renovation obligation also applies when a non-residential unit is transferred: the new owner must carry out minimum measures within five years, such as roof insulation, replacing single glazing or heating appliances older than 15 years. In case of non-compliance, an administrative fine of €500 to €200,000 can follow. Last checked: 14 October 2026.