Removing a wall for an open kitchen, living-dining room or a more spacious layout. For a load-bearing wall, a steel beam and a structural calculation are the core of the job. We make the drawing from €599 incl. VAT; with structural calculation from €998 incl. VAT. We plan delivery by arrangement. An opening in a non-load-bearing wall is often permit-free; for a load-bearing wall a permit for the technical building activity is required.
A wall opening means removing an interior wall to merge two rooms into one open living space. For a load-bearing wall, a steel beam takes over the load. The drawing costs from €599 incl. VAT (from €998 incl. VAT with structural calculation) and is planned quickly and by arrangement (rush available for a surcharge). An opening in a non-load-bearing wall is often permit-free; for a load-bearing wall a permit for the technical building activity is required. You follow your entire request live in your own online file, from quote to completion.
A wall opening is the removal of (part of) an interior wall to merge two spaces. If that wall is load-bearing, a steel beam takes over the load above. These are the elements we draw and calculate.
The wall that supports the floor or roof above. This is where we create the wall opening; the load above must be redirected elsewhere.
The beam that carries the load across the opening. We calculate the profile based on span and load; this is the centrepiece of the wall opening.
On both sides the beam rests on a bearing with a steel wall plate. This is where the forces are transferred into the existing wall.
During the work, temporary props support the floor so that the beam can be placed safely before the wall is removed.
After installation the beam is boxed in and concealed in the ceiling or wall, neatly finished in the new open space.
Where required, the steel receives fire-resistant cladding (for example 30 or 60 minutes), so that it meets the requirements.
Four questions, about 30 seconds. No obligation.
An opening in a non-load-bearing wall is often exempt from a permit. For a load-bearing wall, the technical building activity applies: alongside the structural calculation, a permit is then also required, which we submit for you. Drawing from €599 incl. VAT; with structural calculation from €998 incl. VAT. Request a free quote for your exact situation.
Indicative calculator. The drawing with structural calculation is a fixed price; the construction work is carried out separately by a contractor.
Lines excl. VAT
* We provide the drawing and structural calculation (and permit or notification if required). The construction work is carried out separately by a contractor; that amount is an estimate per wall opening. Request a quote for the exact drawing and calculation costs.
Amounts shown are incl. VAT (consumer price); the amount below the total is the amount without VAT. Your personal quote always shows the exact total price.Amounts shown are excl. VAT; the amount below the total is the amount incl. VAT (consumer price). Your personal quote always shows the exact total price.
Every package includes the drawing. Add structural calculation or the full permit route.
Not included
Not included
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From a single clean wall opening to a complete replanning of a floor. We calculate the steel and draw what is permitted and what works.
One opening in a load-bearing interior wall with a steel beam. Ideal for an open kitchen connecting to the living room. A load-bearing wall requires a permit; we apply for it on your behalf.
A wide span to open two rooms into one living space. A larger span means a heavier section and a precise structural calculation.
Multiple wall openings and new partition walls to fully redesign an entire floor. More beams, a comprehensive plan and a complete structural calculation.
If you want more space and light, there are several ways to achieve it. A wall opening is the most affordable option and creates a much more spacious feel, but does not add floor area. Here is how it compares to an extension and a dormer.
An opening in a non-load-bearing wall is usually exempt from a permit. Removing a load-bearing wall is a technical building activity: alongside the structural calculation, a permit is then always required too. Extra rules apply for an apartment or listed building. A few typical situations.
Example project · load-bearing wall · with building permit · open living space
Challenge: A couple in Rotterdam wanted to merge the closed kitchen and living room into one open living space. The partition wall turned out to be load-bearing, with a residential floor above it, so simply demolishing it was not an option.
Our approach: We assessed the structure, calculated the steel beam (HEA 180 spanning 3.2 m) and drew the bearing points left and right in the existing wall. Because it was a load-bearing wall, we applied for the permit for the technical building activity, with the structural calculation included. Once the permit was granted, the contractor got started with the drawing and calculation.
Result: A spacious, light-filled kitchen-diner. Drawing with structural calculation planned quickly and by arrangement.
A wall opening is a relatively minor intervention with a major effect on living comfort. What you need to know.
An opening in a non-load-bearing wall is usually permit-free. A load-bearing wall is part of the main load-bearing structure: a permit for the technical building activity is then required, with a structural calculation; we include this.
SOURCE · BBL / ENVIRONMENT ACT 2026A load-bearing wall is part of the shared structure. For a wall opening you need approval from the owners' association; they almost always request the structural calculation.
ADVICE · Owners' association rules + calculationAn open living space often makes the home more attractive and can be co-financed through a renovation mortgage (up to 106% of the value after renovation).
BRON · NHG.NL 2026That depends on the wall. An opening in a demonstrably non-load-bearing wall is usually exempt from a permit. If you remove a load-bearing wall or create an opening in one, that's a technical building activity: because structural safety is affected, a permit for the technical building activity is required, even if nothing changes on the outside. We assess this at intake, prepare the structural calculation and submit the application for you. In an apartment or with a VvE (owners' association), permission (and sometimes a notification) is also required. Extra care applies for listed buildings. We check your situation for free.
A drawing for a wall opening in a load-bearing wall costs from €599 incl. VAT; with structural calculation from €998 incl. VAT. The construction by a contractor (steel, demolition, bearing and finishing) is indicatively between €1,500 and €4,000 per opening, depending on the span.
A load-bearing wall supports the floor or roof above and is usually thicker, runs perpendicular to the floor joists or continues across multiple floors. If you are unsure, we assess it on the basis of the construction drawings or a photo of the situation. A structural calculation is always required for a load-bearing wall.
Often yes, but you need permission from the owners' association (VvE) because a load-bearing wall is part of the shared structure. The VvE usually requests a structural calculation. We provide exactly the calculation and drawing that the VvE and the structural engineer need.
We plan the drawing with structural calculation quickly and by arrangement; rush is available for a surcharge. For a non-load-bearing wall, an opening is often permit-free and you don't need to wait for a municipal decision period. For a load-bearing wall, a permit for the technical building activity is required and the structural calculation is part of the application; we submit that application for you.
Yes. We draw and calculate wall openings across the Netherlands. We do the drawing and calculation work remotely, based on your existing drawings or survey; if a permit or notification is still required, we arrange that with your municipality.
Load-bearing walls are usually drawn thicker and hatched, the floor joists rest on them and they are in the same place on every floor. Certainty comes from the structural drawing in the building file or an assessment by a structural engineer.
Recognising a load-bearing wall · Requesting a construction drawing
Yes. Anyone who removes or breaks through a load-bearing wall must show that the structure remains safe. Our own structural engineer calculates the steel beam and the bearings according to the Eurocode; that calculation is part of the permit application.
44 clients rated their wall opening project with an average of 4.9 out of 5 stars. A few of their comments:
Great help with the permit application for the wall opening. The municipality of Enschede had a few questions about the aesthetic review, but they were resolved quickly.
Wall openingVery happy with the input. The structural calculation for the wall opening was very thorough. No hassle with the municipality of Zaanstad.
Wall openingGreat help with the permit application for the wall opening. The municipality of Eindhoven had a few questions about the aesthetic review, but they were resolved quickly.
Wall openingVery happy with the input. The structural calculation for the wall opening was very thorough. No hassle with the municipality of Utrecht.
Wall openingA fixed-price quote as soon as possible. Free check on whether your wall opening is permit-free and whether the wall is load-bearing. No obligation.