A bigger living room, an open kitchen or a light-filled sunroom at the rear. An extension gains you ground-floor living space, often even without needing a permit. We make the permit-ready drawing from €599 incl. VAT. We plan delivery by arrangement.
An extension is a ground-floor addition to the existing home, usually on the rear facade for a bigger living room or kitchen. At the rear, within the back-garden zone, this is often exempt from a permit. Tekenpunt delivers the permit-ready drawing from €599 incl. VAT. We plan delivery by arrangement (rush available for a surcharge). You follow your whole application live in your own online file, from quote to delivery.
An extension is a ground-floor addition to the existing home, usually at the rear for a larger living room or kitchen. An extension can also wrap around the house (such as a conservatory). These are the elements we draw.
A concrete foundation beam on piles or a slab foundation, depending on the soil conditions. The base on which the extension rests.
Almost always a flat roof with bitumen or EPDM and a neat roof trim. A flat covering is required for permit-free projects.
Side walls in brickwork to match the house, or in lightweight timber-frame construction. Including insulation and cavity.
The connection to the existing rear facade: waterproofing, the expansion joint detail and the wall opening are critical here.
An insulated ground floor, often with underfloor heating, that seamlessly connects to the existing floor level.
Often a large glazed facade or folding wall towards the garden. Determines how much light enters and the connection with outside.
Four questions, about 30 seconds. No obligation.
A rear extension to a non-listed building, with a flat roof and up to approximately 4 metres deep, is usually permit-exempt within the rear garden area. We produce the drawing that complies with the regulations. From €599 incl. VAT. Request a no-obligation quote for your exact situation.
Indicative calculator. The drawing is a fixed price; the construction you commission separately through a contractor.
Lines excl. VAT
* We handle design and (if required) the building permit. Construction is carried out separately by a contractor; that figure is an estimate of approximately €1,500-€2,500 per m². Request a quote for the exact drawing 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.
Everything for your permit
Total €1,338.02 excl. VAT
Every package includes the drawing. Add structural calculation or the full permit route.
Not included
Not included
Not included
From a sleek permit-free extension to a full wraparound extension. We advise on what is permitted and what looks good.
Flat-roofed extension at the rear facade, clean and straight-lined. Up to approximately 4 metres deep, usually permit-free and the quickest to arrange.
An extension with a sloping lean-to roof and large areas of glass or a rooflight. More elegant and lighter, but often requires a building permit because of the roof form.
A spacious extension or glass conservatory, sometimes wraparound or full-width. Maximum light and space; almost always a building permit and structural calculation required.
An extension is the most direct way to gain living space on the ground floor. Here is how it relates to an attached conservatory and a roof extension or dormer.
The permit-free rules are the same nationwide, but for an extension that requires a permit the aesthetic review differs per municipality. A few typical situations.
Example project · rear facade · permit-free · open living kitchen
Challenge: A family in Haarlem had a small kitchen that was separate from the living room. They wanted a spacious open kitchen-diner at the rear with plenty of light towards the garden, but did not know whether a permit was required or how far they could extend.
Our approach: We checked the design against the permit-free rules: rear facade, flat roof, within the rear garden area and up to 4 metres deep. No permit required. We delivered a complete, dimensioned drawing with foundation, floor detail, a large glazed facade and the connection to the existing wall, plus a light structural calculation for the span.
Result: 18 m² of extra living space, a light open kitchen-living room and no permit process. Drawing planned by arrangement; the contractor could start straight away.
An extension is a valuable intervention that increases your living area. What you still need to know.
Rear facade, not a listed building, flat roof, within the rear plot area and up to approximately 4 metres deep: usually permit-free. We verify this in the drawing.
SOURCE · BBL / ENVIRONMENT ACT 2026For an extension, insulate the new floor, walls and flat roof well, often with underfloor heating. More comfortable and beneficial for your energy label.
ADVICE · Rc ≥ 6.3 new sectionAn extension increases the living area and often raises the property value. It can be co-financed through a renovation mortgage (up to 106% of the post-renovation value).
BRON · NHG.NL 2026Often yes, up to a certain depth. An extension at the rear facade within the rear plot area is usually permit-free if it has a flat roof and remains approximately up to 4 metres deep (depending on plot size and the conditions of the BBL and the Environment Act). At the front or side, or for a listed building, a building permit is required. We check it free of charge.
A permit-ready extension drawing starts from €599 incl. VAT, depending on the situation. The construction itself (by a contractor, not us) is indicatively between €1,500 and €2,500 per m², depending on finish, glazing and foundation.
Without a permit, a rear extension is usually possible up to approximately 4 metres deep, provided it is within the rear plot area and has a flat roof. Beyond that depth or for a larger plot, more may be possible with a permit. We assess your exact situation.
Yes. An extension rests on its own foundation, often a concrete foundation beam on piles or a slab foundation, depending on the ground conditions. We include this in the construction drawing and, for larger spans, in the structural calculation.
We plan the drawing quickly and by arrangement; rush is available for a surcharge. If a permit is needed, allow for an 8-week municipal decision period. Construction itself usually takes a few weeks depending on scope.
Yes. We draw extensions across the Netherlands. We handle the drawings remotely and submit any required building permit to your municipality. We know or verify the aesthetic policy for every municipality.
No, that is a separate service. The price above is for the design and the permit-ready drawing itself. Submitting the application via the Omgevingsloket and handling any follow-up questions from the municipality fall under the environmental permit service, which you can add separately (see the prices above). If you choose that service, we take care of the complete submission and municipal communication for you.
A permit-ready drawing includes the existing and new situation, elevations, one or more cross-sections and detail drawings where needed. You receive the drawing as a PDF by default; an editable DWG file is available on request. We do a free aesthetic-policy check beforehand.
Yes. Tekenpunt has been based in Amsterdam (KvK-registered) since it was founded in 2016 and works nationwide, so also in Amsterdam and the surrounding municipalities. We do the drawing work remotely; if a permit is needed, we submit it digitally to your municipality, including knowledge of the local aesthetic policy.
For the fixed price you get a permit-ready drawing from a drawing firm with our own structural engineer. We deliberately don't give a hard turnaround guarantee, because we don't want to promise what we can't always deliver; we do offer a standard and a rush option (see the prices above). A cheaper, generic drawing that gets rejected usually costs you more time and money in the end.
Yes. At Tekenpunt the structural calculation is a separate service, carried out by our own structural engineer (see the prices above). You can order it separately or combine it with the building drawing, for example when a load-bearing wall disappears or there's a larger span.
A bump-out enlarges an existing room, such as a kitchen or living room that you extend to the rear. An extension is a separate room against the house, for example a utility room or extra room. For the permit rules it usually makes no difference: both count as an ancillary building.
A site plan, the ground floor plan, the elevations and a section, in the existing and the new situation. For an extension with an opening into the house or a roof lantern in the roof, a structural calculation is added.
98 clients rated their extension project with an average of 4.9 out of 5 stars. A few of their comments:
We were dreading the paperwork for our extension in Den Haag, but Tekenpunt took everything off our hands. The permit was arranged quickly, remarkably smoothly. Communication via WhatsApp was also smooth and personal.
Extension / additionVery happy with the input. The structural calculation for the extension was very thorough. No hassle with the municipality of Zaanstad.
Extension / additionFantastic experience. We urgently needed a structural calculation for an extension. We had the documents in no time, and the municipality of Eindhoven approved without any problems. The price was very clear upfront, no surprises afterwards.
Extension / additionGeweldige service en duidelijke communicatie.
Extension / additionA fixed-price quote as soon as possible. Free check whether your extension is permit-free. No obligation.