De Lier grew a little in every period
De Lier, municipality of Westland, has an evenly built housing stock: a third from 1946 to 1974, a fifth from 1975 to 1991, almost a fifth from 1992 to 2005 and more than a tenth from after 2015. Pre-war buildings make up about a tenth. The median construction year is 1978.
For the energy label there is therefore no standard story: side by side stand homes where the cavity fill is decisive and homes that mainly need to show their completion paperwork. When selling or renting out, a registered energy label is legally required; without one you risk €515 as a private individual and €1,030 as a legal entity. The label is valid for ten years from the survey date, and a favourable class can earn a rate discount on a mortgage application.
Home and nursery: where the survey draws the line
In the Westland many homes belong to a (former) horticultural business. For the energy label only the heated, habitable space within the thermal envelope counts; greenhouses, sheds and unheated business space are left out. For a home with an indoor business section the advisor determines on site where the envelope runs. If it concerns a full business premises, that is non-residential and we bring in a certified colleague.
How to request an energy label in De Lier
You arrange an official energy label with us in three steps:
- Quote and appointment - calculate your price with the calculator or call us, and schedule the survey at a time that suits you.
- Property survey - our BRL 9500 certified advisor assesses insulation, glazing and installations following the NTA 8800 method.
- 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.
Since 1 January 2021 the physical survey is the only route: the old provisional energy label based on construction-year data was abolished then.
Energy label per property type in De Lier
The proportions come from the Dutch address and buildings register. Indicative; the survey decides per home.
| Property type | Share in de kern | Expected label |
|---|---|---|
| Post-war homes 1946 - 1974 | about 32% | C - E |
| Homes 1975 - 1991 | about 21% | C - D |
| Homes 1992 - 2005 | about 18% | B - C |
| New build from 2015 | about 12% | A - A++ |
| Pre-war buildings | about 9% | D - F |
The property survey in practice
Our BRL 9500 certified advisor takes 60 to 90 minutes and measures:
- The envelope: everything bordering outside air, crawl space or an unheated room
- Roof, walls, floor and glazing, each with its own insulation value
- Boiler or heat pump, plus how hot water is produced
- Ventilation and solar panels
The label looks at windows, not at loose panes: the U-value of glass and that of the complete window with frame always differ slightly. With both details ready, the most favourable correct value goes into the sum.
Which documents should you have ready for the survey?
Because the stock here is so mixed, the most useful evidence differs per home:
- Post-war home: the invoice for the cavity fill, with product type.
- 1980s or 90s home: the glass specification and paperwork for floor insulation.
- New build: the completion documentation and solar panel details.
- Home attached to a nursery: a floor plan, so residential and business parts can be separated.
What you cannot prove does not count: the defaults for the construction year then apply.
One look at EP-online can save a survey
Many addresses already have a registered label. If it is less than ten years old, survey date as the starting point, you can simply use it. The list of exceptions to the obligation is short, and listed buildings have not been on it since 29 May 2026.
Energy label prices in De Lier
The rates below are total prices: VAT, the survey at your home and the official EP-online registration are in. How the amounts per property type are built up is in the 2026 price overview.
| Property type | From (incl. VAT) |
|---|---|
| Studio / room apartment | € 220 |
| Apartment | € 275 |
| Maisonette / terraced house | € 330 |
| Corner or semi-detached house | € 340 |
| Detached house | € 375 |
Nothing comes on top: no call-out fees, no surprises, and you pay after receiving the label. Homes with a business section and buildings over 150 m²: fixed tailored price, known in advance.
What landlords in De Lier should know
For rental homes up to and including 186 points the points system has been law rather than advice since 1 July 2024, and the energy label weighs heavily in it. Unsure where your home lands? A rental points count maps it exactly, in the same visit as the label survey if you wish.
Recognition you see back in the result
Only BRL 9500 certified companies may register labels; InstallQ recognition and the Centraal Register Techniek go with that. The advisor who surveys the home is also the one who registers, and the one you reach again later.
“I had a very pleasant exchange with Mark of Hollands Duurzaam. Everything was arranged quickly and carefully with excellent service! I can certainly recommend Hollands Duurzaam.”
- Sandy van Rees · Google review
“Very nice company with good communication. It was arranged faster than expected. I would have the next energy label assessed by this company again.”
- Monique Duijvestijn · Google review
Hollands Duurzaam is rated on average 4.9 out of 5 based on 67 Google reviews. View all reviews ›
Frequently asked questions about an energy label in De Lier
Our home belongs to a nursery. Does the business part count?
My neighbour got a C and our house looks like his. Will I get a C too?
What happens if the label comes out lower than hoped?
How far do you travel for a survey in De Lier?
What does an energy label cost for my home in De Lier?
Service area around De Lier
Besides De Lier we are active in Naaldwijk, Wateringen, Kwintsheul, Maasdijk and Schipluiden, 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.