Open veranda / canopy
An open canopy on the garden side, with a timber deck or polycarbonate roof. Most affordable, lowest threshold. Seasonal use.
- PermitUsually exempt
- UseSpring-autumn
- Lead time4 wk
From
€1.295
Conservatory or garden room drawings across the Netherlands
Extra living space with maximum natural light on the garden side. A conservatory at the rear is often permit-free up to 4 m deep. We produce the permit-ready drawing from €1.295, ready in 4 weeks.
€1.295
Starting price
Permit-ready drawing
0€
Permit
Often permit-free at the rear
4wk
Delivery time
Express in 1-2 weeks
14m²
Average project
Lighter, more spacious living
What is a conservatory or garden room?
A conservatory or garden room is a glazed or semi-open extension on the garden side of the property, ranging from an open canopy to an insulated extra living room. At the rear, a conservatory is often permit-free up to 4 metres deep. Tekenpunt delivers the permit-ready drawing from €1,295, ready within 4 weeks or express in 1-2 weeks.
A conservatory is a glass or semi-open extension on the garden side of a home. From a simple canopy to a fully insulated additional living space. These are the elements we draw.
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Glass roof or roof surface
Laminated safety glass or insulated roof panels. Decisive for heat gain and comfort. For an insulated conservatory: HR++ glazing.
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Connection to existing facade
The connection between the conservatory and the rear facade of the house. Watertightness and thermal break are critical here.
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Glass front or sliding facade
The facade infill in an aluminium or timber frame. A sliding door or folding wall creates a seamless transition between inside and outside.
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Foundation and footings
Light foundation strips or concrete pads, depending on soil conditions. We determine this in the drawing so the contractor can start immediately.
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Floor and drainage
Tiled floor or polished concrete, optionally with underfloor heating. Rainwater drainage via the roof to sewer or decking.
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Frame: aluminium or wood
Aluminium is low-maintenance and available in any colour (RAL). Timber gives a warmer appearance and insulates well. We draw both variants.
Do you need a building permit?
Four questions, about 30 seconds. No obligation.
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On which side will the conservatory be?
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Is your property a (national) listed building?
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How deep will the conservatory be (measured from the rear facade)?
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Open veranda or enclosed conservatory?
✓ Good news: probably permit-free
A conservatory at the rear of a non-listed building is often permit-exempt when the depth is a maximum of 4 m and the built-up rear garden area does not exceed 50%. We produce the drawing that complies with the regulations. From €1,295. Request a no-obligation quote for your exact situation.
Calculate your conservatory price
Indicative calculator. The drawing is a fixed price; the construction is carried out separately by a contractor or conservatory builder.
Your situation
What you pay with us
- Construction drawing conservatory€1.295
- Selected add-ons€0
Total Tekenpunt (excl. VAT)
€1.295
Request a quote for this price →
The build itself is then handled by a contractor (not by us):
Indicative construction costs± €26.500
* We handle the design and (if required) the permit. The construction is carried out separately by a conservatory builder or contractor; that amount is an estimate based on the surface area. Request a quote for the exact drawing costs.
Which conservatory suits your home?
From a simple canopy to an insulated extra room. We advise what best suits your use and budget.
Semi-open garden room
Partially glazed walls, with one or more sliding doors that can be opened. Flexible in summer and autumn, protects against rain and wind.
- PermitUsually exempt
- Use3 seasons
- Lead time4-6 wks
From
€1.595
Insulated conservatory year-round
Fully glazed walls with HR++ glass, insulated roof construction, underfloor heating and mechanical ventilation. A true additional living room that is comfortable even in winter.
- PermitCheck required
- UseYear-round
- Lead time6-8 wks
From
€1.895
Conservatory vs alternatives
A conservatory adds light and space without sacrificing garden area. Here is how it compares to an extension and a veranda.
Conservatory / garden room
- Drawing from €1,295
- Maximum light entry through glass
- 6-25 m² extra living space
- Indoor-outdoor transition
- Often permit-free
Extension (masonry)
- Drawing from €1,195
- Solid facade, less light
- 6-20 m² living space
- Feels like an extension of the home
- Permit often required
Roof extension
- Drawing from €1,495
- Full storey on top
- 20-50 m² extra
- Building permit always required
- Increases the property value
What is permitted in your situation?
The permit-free rules depend on position, type and surroundings. A few typical situations at a glance.
Site plan
Type
Permit
From
Check
Rear extension, max 4 m deep, no listed building
Open veranda
Free
€1.295
N/A
Rear extension, max 4 m deep, no listed building
Semi-open conservatory
Free
€1.595
N/A
Rear side, deeper than 4 m
All types
8 wk
€1.795
Review
Protected townscape
Insulated conservatory
8-10 wks
€1.895
Strict
Listed building (national or municipal)
Custom work
10-14 wks
€2.195
Very strict
Example project: garden room in Bussum
CASE · BUSSUM · 04.2026
Semi-open conservatory adjoining kitchen-diner on garden side
Example project · rear · permit-free · +14 m² bright living space
+14 m² space
0 permit
€1.595 our design
4 wk drawing
FOR
SKETCH
3D
NA
Challenge: A family in Bussum wanted to connect their kitchen-diner to the garden via a light, semi-open garden room of 14 m². The existing rear facade had an inviting position but no transition space. They were unsure whether a permit was needed and did not want a process taking months.
Our approach: We calculated that the conservatory at the rear fell within the permit-free limits: less than 4 m deep and the rear garden zone remained well below the 50% coverage threshold. We drew a semi-open garden room in an aluminium frame with a sliding door across the full width and an insulated glass roof.
Result: 14 m² of extra living space bringing light and garden inside, no permit process required and the drawing was ready within 4 weeks. The conservatory builder could get straight to work.
Year-round use, financing & insulation
A conservatory adds light, but also requires thinking about heat, ventilation and costs. What you need to know for a comfortable choice.
Permit-free?
Rear of the property, non-listed building, max 4 m deep, total outbuildings covering no more than 50% of the rear plot: a conservatory or garden room is often permit-free under the Environment and Planning Act (BBL). An open veranda sometimes has different thresholds. We assess your situation.
SOURCE · BBL / ENVIRONMENT ACT 2026Insulation for year-round use
Do you want to use the conservatory in winter too? Choose HR++ glazing (U ≤ 1.2), an insulated roof structure (Rc ≥ 3.5) and underfloor heating. Mechanical ventilation prevents condensation. We include this in the drawing so the installer can connect straight away.
ADVICE · HR++ glazing U ≤ 1,2 W/m²KFinancing
A conservatory increases the property value and can be financed within a renovation mortgage (up to 106% of the value after renovation). Ask your mortgage provider about the options for energy-efficient conservatories.
BRON · NHG.NL 2026FAQ about conservatories and garden rooms
Q01Do I need a permit for a conservatory or garden room?
Often not. A conservatory at the rear, as an ancillary structure within the rear plot area, falls under the permit-free rules of the Environment and Buildings Decree (BBL). You may build up to a maximum of 4 m deep, provided the total area of outbuildings does not exceed 50% of the rear plot area. An open veranda (canopy) sometimes has different threshold values. We check your situation free of charge.
Q02What does a conservatory drawing cost?
A permit-ready drawing for a conservatory or garden room costs from €1,295 (excl. VAT) at Tekenpunt. The exact price depends on the complexity, the type of conservatory, and whether you also need a permit or structural calculation. Construction costs via a conservatory builder are indicatively between €20,000 and €50,000 depending on floor area, materials, and insulation level.
Q03How deep can a permit-free conservatory be?
A permit-free outbuilding at the rear may be at most 4 m deep (measured from the original rear facade). The total area of all outbuildings may also not exceed 50% of the rear garden area. Beyond those limits a building permit is required. Stricter rules always apply to listed buildings.
Q04Can a conservatory be used year-round?
It depends on the type. An open veranda or semi-open garden room is seasonal, comfortable from spring through autumn. A fully insulated conservatory with HR++ glazing, underfloor heating, and mechanical ventilation can be used comfortably all year round. We advise on the insulation values and installations required and incorporate this into the drawing.
Q05How long does it take to draw a conservatory?
We deliver the drawing within 4 weeks (express in 1-2 weeks). If a permit is required, allow for an 8-week municipal decision period on top of the drawing period. The construction itself takes another 2-6 weeks depending on the type.
Q06Do you work across the Netherlands?
Yes. We draw conservatories and garden rooms across the Netherlands. We do the drawings remotely; any permit is submitted to your municipality. For every municipality we know or check the local rules and aesthetic policy.
§11 Plan your conservatory
Start your conservatory today
A fixed-price quote within 1 working day. Free check whether your conservatory is permit-free. No obligation.