
What Does a Kitchen Extension Actually Cost?
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Estimated Cost Overview – Kitchen Extension

This overview provides an indication of the total costs for a kitchen extension, including materials, labor, installations, and additional expenses.
Cost items and indicative amounts
|
Cost item |
Estimated costs (€) |
|
Foundation and groundwork |
3,000 – 6,000 |
|
Construction and materials |
12,000 – 20,000 |
|
Insulation and glazing |
3,000 – 5,000 |
|
Interior and exterior finishing |
4,000 – 7,000 |
|
Installations (electricity, water, heating, ventilation) |
3,000 – 6,000 |
|
Permits and drawing work |
1,000 – 2,000 |
|
Other costs (transport, waste, unforeseen items) |
1,000 – 2,000 |
Total
estimated costs
Total:
€27,000 – €48,000
Notes
- Costs are indicative and may vary depending on location, design choices, and market developments.
- Luxury finishes, extensive installations, or extra options may increase the budget.
- Permits, advice, and construction supervision may incur additional costs.
Conclusion
A kitchen extension can be realized within a wide budget, depending
on wishes and choices. A detailed quote is necessary for an accurate estimate.
Cost per Size – Kitchen Extension
The costs of an extension for a kitchen are highly dependent on the dimensions, materials chosen and finish. Below is an indicative overview of costs per common size.
1. Small kitchen extension (approx. 10 m²)
- Simple wooden or prefabricated construction
- Basic insulation and standard facade finish
- Foundation with concrete piers
- Including electricity and basic heating
Price indication:
€18.000 – €28.000
2. Medium-sized kitchen extension (approx. 15 m²)
- Insulated wooden or traditional masonry construction
- Concrete slab foundation
- Double glazing and standard interior finish
- Electricity, heating and ventilation included
Price indication:
€30.000 – €45.000
3. Large kitchen extension (approximately 20 m²)
- Traditional masonry construction with high-quality insulation
- Frost-free concrete slab foundation
- Luxury facade cladding and double or triple glazing
- Complete interior finishing and technical installations
Price indication:
€45,000 – €70,000
4. Luxury kitchen extension (more than 20 m²)
- Customization with exclusive materials
- Advanced installations such as underfloor heating, home automation and air conditioning
- High-quality finish and design
Price indication:
€70,000 – €110,000+
Notes
- Prices are indicative and may vary depending on location, design, accessibility and market developments.
- Permits, drawings and additional costs are usually exclusive and can amount to 10% of the construction sum.
Conclusion
The costs for a kitchen extension vary greatly depending on the size and level of finish. A customized quote is necessary for a detailed price indication.
Factors Influencing the Price – Kitchen Extension
The price of an extension for a kitchen is influenced by various technical, material, and environmental factors. Understanding these helps in making informed choices and a realistic budget.
1. Dimensions and design complexity
- Larger areas and more complex shapes increase material costs and labor time.
- Customization and special construction details can greatly increase costs.
2. Materials and insulation
- More expensive materials such as natural stone, hardwood, or high-quality facade cladding influence the price.
- Insulation requirements and quality are crucial for comfort and energy costs, and increase the initial investment.
3. Foundation and Subsoil
- A simple foundation is cheaper than a concrete slab with reinforcement.
- Poor soil conditions may require extra earthworks and foundation adjustments.
4. Installations
- Connections for electricity, water, gas, ventilation and heating increase costs.
- Additional installations such as underfloor heating, home automation or air conditioning incur additional costs.
5. Finishing
- Luxury interior finishing, custom furniture and special lighting solutions affect the total budget.
- Simple finishing is cheaper, but less durable and aesthetic.

6. Permits and Regulations
- Building permits and fees vary by municipality and building type and can increase costs.
- Non-compliance can lead to fines and repair costs.
7. Labor Costs and Location
- Hourly rates vary by region and contractor.
- Difficult accessibility or limited construction space can increase labor costs.
8. Market Conditions
- Prices of materials and labor fluctuate due to supply and demand and can be seasonal.
- Planning outside busy periods can provide cost advantages.
Conclusion
The total price for a kitchen extension is determined by dimensions,
materials, foundation, installations and regulations. Good preparation and
clear agreements are crucial for cost control.
Price Examples – Kitchen Extension
These examples provide an indicative overview of the costs, including materials, labor, and VAT, for different versions of a kitchen extension.
Example 1: Small kitchen extension (approx. 10 m²)
- Simple wooden or prefabricated construction
- Basic insulation and standard facade finish
- Basic electricity and heating
Price indication:
€18,000 – €28,000
Example 2: Medium-sized kitchen extension (approx. 15 m²)
- Insulated wooden or masonry construction
- Concrete slab foundation
- Double glazing and standard interior finish
- Electricity, heating, and ventilation included
Price indication:
€30,000 – €45,000
Example 3: Large kitchen extension (approx. 20 m²)
- Traditional masonry construction with high-quality insulation
- Concrete slab foundation
- Luxury facade cladding and double or triple glazing
- Complete interior finishing and installations
Price indication:
€45,000 – €70,000
Example 4: Luxury extension kitchen (more than 20 m²)
- Customization with exclusive materials and finishes
- Advanced installations such as underfloor heating and home automation
- High-quality interior finishing and design
Price indication:
€70,000 – €110,000+
Note:
Prices are indicative and may vary due to location, design, and
market developments. A custom quote is recommended for an accurate price
estimate.
Recommendation – Kitchen Extension
Realizing a kitchen extension is a significant and costly project that requires careful planning and execution. Below are some recommendations to make the process successful and within budget.
1. Start with a detailed plan
- Develop the design and requirements as fully as possible before construction begins.
- Involve an architect or building consultant for professional support and to avoid surprises.
2. Request multiple quotes
- Compare not only prices, but also services, delivery times and warranties.
- Ensure that quotes are detailed and clearly name all parts.
3. Check permits and regulations
- Inquire in good time with the municipality which permits are required and which rules apply.
- Arrange permits in advance to avoid delays or fines.
4. Choose materials and installations carefully
- Make conscious choices between quality and budget.
- Consider sustainable and energy-efficient options for long-term savings.
5. Communicate clearly with the contractor
- Record agreements in writing, including price, planning and delivery criteria.
- Hold regular consultations to discuss progress and any changes.
6. Plan a financial buffer
- Reserve 10% – 15% of the budget for unforeseen costs or wishes during construction.
- This prevents financial problems and stress.
7. Ensure good aftercare
- Check the delivery thoroughly and record any defects.
- Make agreements about warranty and service after delivery.
Conclusion
A successful kitchen extension requires good preparation, clear
agreements and realistic expectations. With the right approach, it becomes a
valuable investment in living comfort and property value.
