An extra floor in a tall space, loft or industrial building. Internal, without any extension. A mezzanine floor does not change the appearance of your building and is therefore often permit-free. We produce the permit-ready construction drawing and structural calculation from €995, ready in 4 weeks.
A mezzanine floor (also called an entresol or void floor) is an additional floor installed internally within a high-ceilinged space, loft, or industrial building, without any extension. Because the exterior of the building does not change, it is often permit-free. Tekenpunt delivers the permit-ready construction drawing and structural calculation from €995, ready in 4 weeks (express 1-2 weeks).
A mezzanine floor (also known as an entresol or void floor) is an additional level inserted internally within a high space. It consists of a structure of beams, floor joists and a floor slab, matched to the existing walls and the desired load. These are the elements we draw and calculate.
A minimum of 2.10 m is required for a habitable room. This is the first check: does a full storey fit in your space?
Timber system floor, steel frame with concrete slab or Thermax floor elements. Thickness partly determines the clear height below.
The mezzanine floor rests on the existing load-bearing walls or on new HEA/HEB steel beams. The structural calculation determines the section size.
A sound staircase is mandatory. Minimum width 0.80 m, maximum rise 0.20 m (habitable space). We include the staircase in the floor plan drawing.
For habitable use a minimum of 2.10 m; for storage the municipality may accept 1.50 m. We verify this per municipality.
For independent living spaces or residential use, WBDBO fire-resistance requirements apply. We incorporate these into the drawing so your application is correct the first time.
Four questions, about 30 seconds. No obligation.
An internal mezzanine floor does not change the exterior appearance of the building. As long as the structure and intended use comply with the Building Environment Decree (sufficient height, sound staircase, fire safety), no permit is required. We assess your situation and produce a permit-ready drawing with structural calculation. From €995. Request a no-obligation quote.
Indicative calculator. Drawing and structural calculation are a fixed price; the construction itself is carried out separately by a contractor.
* We provide the design, structural coordination and (if required) permit. The construction is carried out separately by a contractor; that amount is a general estimate based on surface area. Request a quote for the exact drawing costs.
From a lightweight timber mezzanine in a home to a heavy steel frame in a commercial hall. We advise on what is technically and regulatory feasible.
A light timber or steel mezzanine floor in a loft or maisonette. Bedroom or workspace on the mezzanine. Often permit-free, construction via HEA beams on existing walls.
Steel frame on new HEA/HEB beams, higher load (habitable space or office). Structural calculation required. Can also stand independently of existing walls.
Heavy steel structure on independent columns for a warehouse, industrial unit or tall retail space. High loads (goods or persons), fire safety requirements, sometimes a Wabo permit required.
A mezzanine floor creates extra space without altering or extending the building. This is how it compares to a wall opening and adding a storey.
The permit requirement and structural requirements depend strongly on the building type and its use. A few typical situations.
Example project · loft · internal mezzanine floor · permit-free · new bedroom
Challenge: A couple in Utrecht lived in a loft in a former studio building. A beautiful space, but the open floor plan left no room for a bedroom. The clear height of 5.2 m offered space for a mezzanine floor, but they were unsure whether this required a permit and whether the existing structural walls could handle the additional load.
Our approach: We checked the load-bearing capacity of the existing walls via a quick structural scan and designed a mezzanine floor of 18 m² on HEA beams bearing on the existing concrete walls. Clear height below the floor: 2.60 m. Clear height above: 2.40 m. No permit required. The staircase was drawn as an open-tread stair to the left of the mezzanine, in keeping with the loft atmosphere.
Result: A full-size bedroom of 18 m², an open view over the loft from above and a pleasantly high ceiling in the living room below. Drawing and structural calculation ready in 4 weeks; construction completed in 3 days by a steel contractor.
A mezzanine floor may seem straightforward, but it touches on several sections of the Buildings and Living Environment Decree. We incorporate this into the drawing.
A habitable room requires a minimum of 2.10 m, both above and below the new floor. A lower requirement applies for storage. We check this as the first step in the feasibility assessment.
SOURCE · BBL ART. 4.26 / 4.27A mezzanine floor always involves structural work. Even when no permit is required, the structure must be demonstrably safe. We always produce a structural assessment; a full KIWA-certified calculation is optional.
ADVICE · NEN 6700 / EC5If the mezzanine floor becomes an independent habitable space, WBDBO requirements (fire resistance between spaces) apply. We advise the correct floor build-up so you are not faced with surprises later.
SOURCE · BBL SECTION 4.1 FIREAn internal mezzanine floor does not alter the appearance of the building and is therefore often permit-free. However, the structure must always comply with the Building Decree (now BBL): sufficient clear height above and below the floor, load-bearing capacity, a sound staircase and fire safety if it becomes a habitable space. For a listed building or if the structure requires a more substantial intervention, a permit is still required. We assess your situation free of charge.
A permit-ready construction drawing for a mezzanine floor or entresol costs from €995, including structural coordination. The construction itself (by a contractor) varies: a simple timber void floor costs approximately €8,000 to €15,000, a steel-frame mezzanine in an industrial unit €15,000 to €40,000, depending on area and load.
Technically they are the same structure: an extra floor installed inside a tall space. 'Entresol' is more commonly used in homes and shops (from the French), 'mezzanine floor' more in commercial and industrial settings. We design both.
A habitable room (bedroom or study) requires a minimum clear height of 2.10 m both above and below the new floor. For storage or utility space less is permitted; 1.50 m can be sufficient. The minimum total ceiling height for a full mezzanine floor is therefore approximately 4.30 m (two layers of 2.10 m plus a floor thickness of approximately 0.20 m).
We deliver the drawing and structural calculation within 4 weeks (express 1-2 weeks). If a permit is required, allow 8 weeks for the municipal decision period on top of the drawing time.
Yes. We draw mezzanine floors and entresols across the Netherlands. We do the drawings remotely; any permit is submitted to your municipality. For every municipality we know or check the local regulations.
A fixed-price quote within 1 working day. Free feasibility check (height, structure, permit). No obligation.