Conservatory: What Does It Cost?

A conservatory costs an average of €3,900 per square meter,
with prices typically ranging between €2,470 and €5,400 per m².

No matter the size or materials, a conservatory (Wintergarten) always enhances a property — both visually and financially — by adding valuable living space.
There are many types, ranging from cold conservatories (unheated) to warm/living conservatories, from small glass extensions to large orangeries.

What Factors Affect the Cost?

Several factors determine the total cost of a conservatory:

• Type and size of the conservatory

• Construction material and design

• Operating costs

• Additional features and permits

• Privacy and sun protection

Types of Conservatories

As mentioned earlier, conservatories are generally divided into cold and warm (living) types — the difference lies mainly in insulation and heating.

Cold Conservatory

A cold conservatory is cheaper and easier to build, costing around €600–1,200 per m².
It usually features simple glazing and a lightweight frame with minimal insulation, making it unsuitable for living in winter.

Instead, it’s often used as a transition space, storage area, or weather-protected sitting zone, especially in older homes.
During warmer months, it provides shelter from sun and rain and can even help reduce heating costs by acting as a buffer zone near exterior doors.

Warm (Living) Conservatory

A warm or living conservatory costs between €750–1,700 per m².
It serves as an extension of the living area, often equipped with heating, double or triple glazing, and insulated profiles for optimal energy efficiency.

Construction Materials and Costs

Different materials can be used for the main structure, each affecting the total price.

Operating Costs

In addition to installation, several ongoing costs should be considered:

• Cleaning: €2–4 per m² for interior surfaces

• Maintenance: Regular inspection of seals, joints, and glazing to prevent heat loss

• Heating: Depends on heating system (e.g., radiator, fireplace, heat pump) and energy source

• Electricity: For lighting and ventilation systems

• Landscaping/Plants: Interior and exterior greenery add extra cost

Additional Costs

Beyond the conservatory itself, extra expenses may arise from permits, foundation, heating, ventilation, and shading systems.

Building Permit

A permit may be required depending on location and size.
Expected cost: €400–600.

Foundation

Every conservatory needs a stable base.
Cost: €1,200–1,500, depending on the type (slab, ring, or strip foundation).

Heating

Depending on the chosen system, heating costs range from €2,500–5,000
(e.g., underfloor heating, radiators, connection to home system, or fireplace).

Ventilation

Proper air circulation is essential, especially for large glass areas.
Cost: €200–2,000, depending on system (manual, motorized, or automated).

Sun and Privacy Protection

Shading systems like blinds, awnings, and sun-protection glass cost around €2,000–3,500.

Example Calculation: Conservatory

Below is an example for a 20 m² cold conservatory made of plastic.
Installation costs are usually included.