Energy label in Wilnis

Wilnis is a post-war village, and for the label that is good news

Wilnis, in the municipality of De Ronde Venen, looks like an old peat village, but the figures from the Dutch address and buildings register tell a different story: nearly half of the more than twelve hundred homes in the centre date from 1946 to 1974, and another almost thirty per cent from 1975 to 1991. Together that is four in five homes; fewer than seven per cent are pre-war. The median construction year is 1972.

Why is that good news? Post-war homes almost always have a cavity, and a cavity is the cheapest insulation step there is. The difference between a D and a B here rarely lies in the shell and almost always in what was or was not retrofitted: cavity fill, glazing, floor, panels.

When selling or renting out, a registered energy label is required, on pain of €515 (private) or €1,030 (legal entity). The label is valid for ten years from the survey date; a favourable class can earn a rate discount on a mortgage application.

The cavity question decides the label in Wilnis

With four in five homes from 1946 to 1991, almost every survey here revolves around the same question: is the cavity filled, and if so, with what. A filled cavity plus HR++ glazing usually brings a 1960s terraced house to C; add floor insulation or a set of solar panels and B is achievable. Without the fill, the same home is stuck at D or E.

We have separate pages for the neighbouring De Ronde Venen villages: Mijdrecht, Vinkeveen and De Hoef.

How to request an energy label in Wilnis

You arrange an official energy label with us in three steps:

1. Quote and appointment - calculate your price with the calculator or call us, and schedule the survey at a time that suits you.
2. Property survey - our BRL 9500 certified advisor assesses insulation, glazing and installations following the NTA 8800 method.
3. Registration in EP-online - you usually receive the definitive label within a few working days. In a hurry? Express delivery within 24 hours is possible.

Note: the old provisional energy label has not existed since 1 January 2021. Without an on-site survey there is no EP-online registration.

Energy label per property type in Wilnis

The overview below follows the actual construction periods from the Dutch address and buildings register. It is indicative: the eventual class mainly depends on what was retrofitted.

What happens during the survey

Our BRL 9500 certified advisor walks through the property in 60 to 90 minutes and measures:

• The building envelope: everything bordering the outside, the crawl space or an unheated room
• Roof, walls, floor and glazing, each with its own insulation value
• The installation for heating and hot water
• Ventilation, and solar panels if fitted

Mind the difference between glass and window. The U-value in the glazing brochure covers the glass itself; the calculation includes the frame, which pushes the value up. With the glass specification and the frame material to hand, a realistic value comes out.

Which documents should you have ready for the survey?

In a village where nearly everything is post-war, the retrofit evidence is half the label. Collect what there is:

• The invoice for the cavity fill, with product type; here this is the key document.
• Paperwork for floor or roof insulation.
• The glass specification of HR++ or triple glazing, plus the frame material.
• Make, type and year of the boiler or heat pump.
• Solar panels: number and peak capacity.

Invoice gone? The advisor looks for observable evidence, such as drill holes in the joints. But with paperwork the calculation uses facts instead of assumptions, and that almost always works out better.

Might you still have a valid label?

Check EP-online before booking a survey. If a label was registered within the past ten years, counted from the survey date, that is enough for a sale or rental. Note one recent change: the exemption for listed buildings ended on 29 May 2026, so a national or municipal monument now needs a valid label too.

Energy label prices in Wilnis

The rate follows the property type: more floors and wall area mean a longer survey. Everything includes VAT and the EP-online registration. A full explanation is in our 2026 price overview per property type.

We charge no call-out or travel costs, and you pay only after you have received the label. Converted farmhouses, detached houses over 150 m² and special properties are quoted on request.

The label and your maximum rent in Wilnis

Under the Affordable Rent Act the points total sets what you may charge. Up to 143 points it is social housing, from 144 to 186 points mid-market rent, and only from 187 points is the home free of limits. A better energy label directly earns points and can lift a home over a threshold.

Why certification matters here

An energy label may only be issued by a company certified under BRL 9500. That guideline prescribes how the advisor reaches a verdict, so that two advisors assessing the same home arrive at the same result. A label from an unrecognised party can be rejected, delaying the sale.

With us the same advisor who surveys your home also registers the label. One point of contact, no call centre.

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Frequently asked questions about an energy label in Wilnis

Service area around Wilnis

Besides Wilnis we are active in Mijdrecht, Vinkeveen, De Hoef, Waverveen and Kockengen, among others. View the full service area.

Hollands Duurzaam provides energy labels throughout the Groene Hart region and beyond, with on-site surveys, EP-online registration, tailored sustainability advice and full WWS rental points counts.