How your energy label is made

Step 1: your request

You enter the postcode and house number. We check the address against the national register and retrieve the known details of the property, such as the property type and floor area. You then see the total price for your address, including VAT.

You then leave your contact details and, if you like, what the label is for and which days suit you. That is not yet a fixed appointment; we contact you afterwards to agree the actual time.

Step 2: preparation

Before the visit it helps if you gather whatever documents you have about the property. Drawings, invoices for insulation or glazing, photographs from before the work was covered up, product details of windows, and details of solar panels or a heat pump.

This is genuinely worth doing. Anything that cannot be seen during the visit and cannot be evidenced must be entered using prescribed default assumptions, which are deliberately cautious. Evidence of real insulation therefore leads to a better and more accurate label. See documents to prepare.

Step 3: the property visit

A qualified assessor visits the property. Depending on its size and complexity this usually takes one to two hours. The assessor measures the property and records the construction of the walls, roof, floor, windows and doors, together with the installations for heating, hot water, ventilation, cooling and any solar panels.

Please make sure the meter cupboard, loft, crawl space hatch and technical spaces can be reached. Someone has to be present to give access, but it does not have to be the owner.

Step 4: calculation and quality check

The recorded data is worked out using the NTA 8800 method, the calculation standard that applies to all Dutch energy labels since 2021. The result is then checked before anything is registered.

The label class is determined by the calculated primary fossil energy demand of the building. It is not a measurement of your actual energy bill, and two identical households can use very different amounts of energy in the same house.

Step 5: registration in EP-Online

The finished label is registered in EP-Online, the official Dutch national register. Only that registration makes it a valid energy label. You receive a digital copy, and the label is publicly verifiable by address.

Read more about what EP-Online is.

What you can expect from us

One point of contact throughout, correspondence in English, and a clear explanation of the outcome. If the assessment turns up something that changes the price or the scope, we tell you before we continue rather than afterwards.

Assessment and calculation follow the Dutch NTA 8800 method within the BRL 9500 Woning Basis scheme. Professional qualifications: EP-W/B assessor (ISSO, certificate number 9509.1005.8475) and EP tailored-advice assessor (InstallQ, certificate number 2381.7272.5221), with continuing professional development completed in April 2026. You can verify any Dutch assessor yourself in the Centraal Register Techniek.