Residential EPC certificate: everything you need to know

A residential EPC (Energy Performance Certificate) is an official document that reflects the energy efficiency of a dwelling. It is mandatory for every sale or rental of a residential building in Flanders — whether it concerns an apartment, studio, terraced house, detached house or villa. The certificate assigns an energy label from A+ (very energy efficient) to F (energy guzzler) and contains personalised recommendations to improve energy performance. During our inspections, we find that many property owners do not realise the impact a good EPC label has on property value. Properties with label A or B sell on average faster and at a higher price than those with label E or F.

Our certified type A energy expert carries out a thorough inspection of your property according to the official inspection protocol IP2025. Specifically, the following elements are measured and checked:

• Building envelope — walls, roof, floor, basement ceiling: material, thickness and insulation value
• Windows and doors — glazing type (single, double, HR++, triple), frame material, airtightness
• Heating system — boiler type, brand, year of manufacture, efficiency, controls (thermostat, thermostatic valves)
• Hot water production — appliance type, storage volume, distribution losses
• Ventilation — system type (A, B, C or D), grilles, ducts
• Renewable energy — solar panels, solar boiler, heat pump
• Lighting — lighting type in common areas

Since July 2025, photo documentation is mandatory as evidence for all insulation and installation measures. During our inspections, we therefore systematically photograph every relevant element.

The more supporting documents you can provide, the more accurate your EPC score will be. The following documents are particularly useful:

• Invoices for insulation work (roof, walls, floor)
• Technical data sheets of insulation materials
• Building plans or floor plans
• Invoices or certificates of the heating system
• Solar panel inspection certificate and power rating (Wp)
• EPB declaration (for new construction or major renovation)
• Post-intervention file (PIF)

No supporting documents? No problem. Our expert will base the assessment on visual observations, but the score may be lower as non-visible insulation cannot always be verified. Check our preparation tips for a complete checklist.

The on-site inspection takes on average 1 to 2 hours for an apartment or terraced house, and 2 to 3 hours for a larger home or villa. After the inspection, you receive the official EPC certificate typically within 24 to 48 hours by email. In urgent cases (e.g. notary appointment at short notice), we do our utmost to deliver the certificate even faster.

Our prices for residential EPC certificates start from EUR 195 excl. VAT for an apartment or studio. The exact price depends on the surface area and complexity of the property. We offer transparent, fixed prices with no hidden costs. The stated price covers the complete service: the on-site inspection, the calculation, the official certificate and the submission to the Energy Performance Database. View our complete pricing page or request a free quote for an exact price.

Since November 2008, an EPC has been mandatory for every sale or rental of a residential building in Flanders. The certificate is valid for a maximum of 10 years. Without a valid EPC, you risk a fine of EUR 500 to EUR 5,000. Since 2023, the renovation obligation also applies: when purchasing a property with label E or F, you must renovate to at least label D within 5 years. This will become progressively stricter towards 2050 (label A as the final target). The EPC plays a crucial role in this: it shows not only the current energy label but also the position relative to long-term targets.